Power Is in the Air – Power Systems Design

Power Systems Design - Power is in the Air
Power Systems Design - Power is in the Air

June 1, 2020 – Power Systems Design

Automobile leading-edge technologies allow us to do other “tasks” in addition to actually driving, and a large percentage of these evolve around the handset.

Recently, the Wireless Power Consortium (WPC or “Qi”) technology won the technology battle and is now the low power standard for handsets. This fact was further cemented with implementation of the Qi technology by all leading worldwide handset makers.

Power Systems Design CISPR 25 Class 5 Initial Testing 100 KHz - 30 MHz
Power Systems Design CISPR 25 Class 5 Initial Testing 100 KHz – 30 MHz

Car models, with wireless charging available, is now at 100+ models which equates to over 12 million (2.4M OEM, 9.7M after market) vehicles having Qi based systems installed in 2018 alone. The majority are Qi Baseline Power Profile (BPP) or 5W systems. The new direction is for faster charging and higher power, via compliance with the Qi Extended Power Profile (EPP) or 15W capability. This faster charging convenience comes with additional technical hurdles that must be overcome. The three main issues being EMI compliance, efficiency and thermal limitations.

The 15W System

Within the WPC standard, there are sub-categories (e.g. MP-A9) that specify various aspects of the system and configuration of the transmit (Tx) coil that is used. Done for interoperability purposes, the standard defines: input DC voltage, Tx coil size and shape, frequency control (e.g. fixed), power level, and power control (voltage/frequency/phase/duty cycle). The 15W Tx input voltage is 12V, with coil voltages up to 100V due to the resonance mode of operation, and thus has both elevated magnetic (H) and electrical (E) fields meaning potentially stronger radiated noise than Qi BPP 5W systems.

EMI Issues and Solutions

On newer vehicles, numerous RF systems need to co-exist and ensure that they do not affect anything else such as: AM/FM radio, GPS, Bluetooth, WiFi, telematics, etc. A few of these RF systems operate within the 87-205 KHz (up to 300 KHz) frequency range of the Qi EPP system and/or low harmonics. AM radio, 525 KHz to 1705 KHz (in the Americas), is required to be EMI free as it is used as part of the Emergency Broadcast System. New remote keyless entry systems (RKE) operate at 125 KHz as do some tire pressure monitoring systems (TPMS) for driving the initiator L-C (inductance-capacitance) coil circuit.

Automotive applications have very stringent EMI requirements. CISPR 25 (Comité International Spécial des Perturbations Radioélectriques) is a non-regulatory engineering automotive standard that sets conducted and radiated emission limits that must be met for the protection of other on-board receivers and defines these limits over a frequency range of 150 KHz to 2500 MHz.

Within CISPR 25, there are classes defining permitted conducted and radiated noise emissions limits, with radiated being the real concern. The radiated Class limits versus bands are given in Table 1 for Peak, Quasi-peak and Average measured voltage up through the FM radio band.

Table 1 - CISPR 25 Radiated Limits by Class
Table 1 – CISPR 25 Radiated Limits by Class

With the increased Qi EPP power levels, meeting Class 4 has been a challenge and to date, no Class 5 system is available in the market. Actual CISPR 25 Class 5 measurement data is provided in Figure 1.

From the plot, this design does not fully pass Class 5 certification but does meet Class 4 requirements. The following sections address some key EMI noise mitigation areas used in the system design.

The first approach of mitigating EMI noise is implementing a fixed frequency system. The Qi standard allows for variable frequency to better “tune” the two sides to improve performance. A changing frequency would make complying with the CISPR 25 stringent EMI noise limits even more problematic. For current Qi EPP designs, the fixed frequency is around 127 KHz.

The next technique is to remove the Tx coil square wave currents and have them be sinusoidal. This approach reduces the noise “spikes” that could be otherwise generated. Using an inductor in the drive circuitry smooths out the square wave current created by the turning ON/OFF of the switches (MOSFETs) and helps to ensure that the switching scheme is “clean” and noise free.

Further EMI suppression can be realized with the addition of a common mode filter (CMF) placed in series with the Tx coil windings. Current through the Tx coil is pure alternating current (AC), which can be considered as 100% ripple current, and has no direct current (DC) content like many power supplies which involve DC current and some allowable ripple current. Therefore, selection of the ferrite material used for this CMF is important and AC core losses must be minimized at the 127 KHz fixed frequency.

Another EMI noise suppression technique is to add EMI suppression magnetic sheets to absorb harmonics and spurious unwanted noise that may emit out of the backside of the main Tx shield. The magnetic sheets remove EMI noise via two methods. First, higher permeability (µ’) of these materials yields better shielding (containment) performance of the magnetic flux (φ) and reduces it from being radiated. Next, higher resistive properties (µ”) yield better noise suppression through higher core losses for the unwanted frequencies’ flux fields remove the EMI noise in the form of heat. This relationship is given in Equation 1.

µ = µ’ – jµ”                           Eq.   1

But having too high of a µ’ value can decrease performance. Due to a phenomenon called magnetic coupling (K), having an additional magnetic sheet can shift the inductance value of the Tx coil and de-tune the circuit and move it away from the desired fixed frequency.

Lastly, there are non-magnetic materials that also suppress EMI noise. The challenge is to obtain a material that can provide attenuation without simply reflecting the EMI noise. Silver alloy based films with low surface resistances (~4 ohms/square) have been used and demonstrate improved EMI noise suppression of problematic harmonics up to 1 MHz. These non-magnetic sheets, placed on top of the Tx coil windings, tend to better suppress E fields than H fields.

The Tx coil comes with its own magnetic shield which contains desired magnetic flux generated by the sinusoidal electrical current going through the winding. For the operating frequency (127 KHz), the shielding material is selected to have higher µ’ and lower µ” as to not attenuate the desired magnetic flux field. This shield contains the wanted magnetic flux and also some of the harmonic flux, thus becoming part of the of the overall EMI compliance solution.

Efficiency – Wireless Power System Factors

Figure 2 - Standard WPC MP-A9 Tx Coil
Figure 2 – Standard WPC MP-A9 Tx Coil

With no direct electrical connection between charger (Tx side) and the receive (Rx) device, power is transferred between the two sides via an H field created by electrical current flowing through the Tx coil. The Rx coil captures this H field and converts it to an electrical current through the Rx winding. The mechanism for this process is magnetic coupling and is impacted by alignment between the two coils (X and Y), the separation distance (Z gap) and the orientation (parallel).

In an automotive application, orientation is controlled by the flat center console area surface. Alignment is addressed currently by a 3 distinct windings Tx coil and with built-in control intelligence, the Qi system determines which winding is best aligned. This 3 windings coil provides some positional freedom but only in one axis. An example of a MP-A9 coil is shown in Figure 2.

 

This 3 windings coil is not a system requirement, but is the “norm”. There are current efforts to have a 2 windings coil configuration for smaller vehicles to reduce both size and cost, with the trade-off being alignment and possibly reduced efficiency.

The Z direction gap is more of a challenge due to the original Qi standard specifying the maximum magnetic shield-shield distance as <5 mm, and not the coil winding-winding distance. The shields are used for: 1) shielding the H field from objects behind the coils, 2) shaping/directing/containing the H field, 3) helping to set the inductance values, and 4) providing the mechanism for magnetic coupling, a function of the distance between the two magnetic shields. Therefore, for in-vehicle applications, with a Rx coil winding thickness of up to 1.0 mm, a 1.0 mm phone back cover thickness, a phone protection case up to 3.0 mm and then a center console thickness of 2.0 mm, a Tx winding structure thickness of 2.5 mm, all means the actual shield-shield Z gap distance is 9-10 mm, which assumes no gap between the phone case and the center console. As the coupling factor decreases with Z gap distance, pressure is put unto the Tx side to compensate for the lower coupling by requiring more Tx input current to maintain the power required on the Rx side. Since the electrical load does not change, requiring more input current to maintain the same output power is another way of saying decreased efficiency. This is shown in Figure 3.

Figure 3 - Efficiency Vs. Z Gap using WPC A11 Tx Coil, 5V Rx Output
Figure 3 – Efficiency Vs. Z Gap using WPC A11 Tx Coil, 5V Rx Output

This testing used two Rx coil sizes, with and without having a battery located behind the Rx coil. The efficiency rolls off as the Z gap increases between the coils. The Qi system also operates with in-band communication and when coupling (K) is low, communication may cease and stop power transmission. This was the case for the bottom orange curve so all testing was terminated at 11 mm. For Qi EPP systems, the higher currents will help with coupling, but it is important to understand what the real-world Z gap is.

Higher coil winding currents also create higher wire losses. There is both a coil’s DC resistance (DCR) value and AC resistance (ACR or RAC) value, with wire loss being related to RAC and is shown in Equation 2.

PLOSS = I2 x RAC                                   Eq.2

where:

I – Tx coil winding AC current

RAC – resistance at operating frequency

Higher current systems also generate more magnetic flux (φ) and higher core losses within the Tx coil magnetic shield.  Typical curves, for various magnetic materials, are shown in Figure 4 for core loss (Pcv) versus magnetic flux density (B), with Ni-Zn and Mn-Zn being types of ferrite.

Figure 4 - Magnetic Shield Core Loss vs. Magnetic Flux Density
Figure 4 – Magnetic Shield Core Loss vs. Magnetic Flux Density

Flux density is related to the magnetic field and is supplied by magnetic core suppliers in the material’s B-H curve. The relationship between current and the H field is given in Equation 3.

H ∝ N x I                               Eq. 3

where,

N – the coil’s number of winding pattern turns

I – Tx coil winding AC current

In wireless charging systems, the alignment and Z gap parameters cannot be controlled by the auto-maker. How and where the user places the handset into the console area, what type of protective case is used, internal Rx coil size and shape, whether the handset shifts during acceleration and braking, all will impact efficiency.

Efficiency – Tx Power Topology Factors

A key efficiency improving technique is to use a Push-Pull converter drive scheme. The Push-Pull converter supplies the Tx coil current by a set of switches in a synchronized timing scheme. The switches are alternately switched ON and OFF, thereby cycling the direction of the current through the coil during both halves of the switching cycle, unlike other topologies (e.g. Bucks) that rely on stored energy within passive devices to supply current during the switch’s OFF period. Also implemented with Push-Pulls, is a short “dead” time with no current, ensuring both switches are not ON (sourcing current) at the same time which would cause damage to the supply. Overall, Push-Pull converters have steadier input current over other power topologies, generate less EMI noise, and are more efficient in higher power applications.

A technique also used is called Zero Voltage Switching (ZVS) or “soft” switching. In order to reduce losses during the turning ON/OFF of the switches, the system ensures that prior to the switching process, there is no voltage across the switch. This eliminates the possibility of having current flowing through the switch with an applied voltage. Having ZVS therefore reduces switching losses and substantially improves efficiency. Timing control is therefore a key requirement.

Another advantage of ZVS is it reduces harmonics. Reducing the harmonics assists in complying with the CISPR 25 requirements. This is included here as it also plays a key part in efficiency. In the Qi system, the Tx and Rx side circuits’ L-C networks are tuned to a specific frequency. Harmonic energy is wasted as the tuned Rx circuit will rectify little energy outside of its tuned frequency range.

Thermal Issues

Losses in wireless power systems come from the circuit components, wires and cores on both the Tx and Rx sides, and coupling losses to bridge the air gap between the two coils. Within the auto-maker’s control are only the Tx side wire, core and the circuit component losses, including the PCB, and all lead to increased temperature. Auto-makers have very stringent temperature rise limitations and is usually at +10oC rise over ambient temperature.

Magnetic core losses are dependent on the material’s characteristics. The key parameters are: material type used, i.e., ferrite or powdered iron, the thickness of the shield, the operating frequency (creating inner-material losses), and the magnetic field flux density. Temperature can have an impact but limits set by the auto-makers have ensured that the temperature has no real impact on core losses.

For the Tx coil, multi-strand litz wire is used to reduce AC losses as the frequency increases, which are due to a phenomenon called “skin effect”. Simply stated, as the frequency increases, more current flows closer (higher current density) to the wire’s outer surface and utilizes less of the cross sectional area. This creates increased resistance, which increases wire loss and temperature rise. Litz wire creates much more overall wire surface area and helps reduce AC resistance over standard single strand wire. As the power and current requirement levels continue to go up, the need to use higher stand litz wire continues. Balancing performance, thermal issues, wire diameter and coil size then become key aspects of in-vehicle systems.

Taming the Beast

Using a Spark Connected 15W automotive Tx module aptly called the “Beast”, which implements all of the aforementioned EMI suppression and efficiency improvement techniques. Testing was done comparing the Tx coil’s shield material type and thickness. Four ferrite and one powdered iron based materials were tested and results were obtained for efficiency and thermal conditions. These are provided in Table 2.

Table 2 - Tx Shield Material vs. Thickness vs. Efficiency Paired with a 50 mm x 40 mm, 8.22 uH Rx Coil
Table 2 – Tx Shield Material vs. Thickness vs. Efficiency Paired with a 50 mm x 40 mm, 8.22 uH Rx Coil

In the Temperature column, Tx shield corner (Cnr) and center (Ctr) measurements are provided for the worse-case scenario of a 0.3 mm thick shield and are for ambient + self-temperature rise values.

Regardless of the shielding material, all maximum efficiencies were for the thicker shields (with 3 sheets of 0.3 mm MS8 used). This also coincides with the thicker shields creating higher inductances which helps in the coupling factor through increased mutual inductance (Lm). Table 2 also shows that the higher µ’ material, FT2, exhibits the highest efficiency across all thicknesses. There are other loss sources and system factors that come into play and the data does not address these. One of these is related to the Tx coil inductance. Since the resonant circuitry was tuned for the FT2 material and its initial inductance value, coupling will shift the inductance values and de-tuned the circuit and reduced efficiency. In design practice, attention would be given to re-tuning the circuit by adjusting capacitance.

As currents continue to increase for higher power applications, the magnetic flux density saturation (Bs) values of the shield materials need to be known. If saturation occurs, a percentage of the magnetic flux will escape out the back, reducing efficiency and causing additional heating via Eddy currents on any metal in close proximity.

Revisiting the plot in Figure 1, another EMI test was conducted by applying a metalized film over the Tx coil to help suppress low frequency harmonic spikes prevalent in the plot. The EMI suppression approach vastly improved the even numbered harmonics up through the 6th harmonic or 762 KHz. This new plot is shown in Figure 5. Needed still, is improvement in the 1-2 MHz range as the Quasi-Peak values are slightly above their limits in. However, the design was certified for Class 4.

Figure 5 - CISPR 25 Class 5 Testing 100 KHz to 30 MHz with Metalized Film
Figure 5 – CISPR 25 Class 5 Testing 100 KHz to 30 MHz with Metalized Film

What’s Next for Vehicles

The Tx system makers have already begun preliminary design work in the 30-45W range, addressing tablets and lower power notebooks. The idea is that the in-vehicle Tx locations could be behind the headrests of the front seats or lower in the pouches for persons sitting in the back seats, allowing for continuous operation of the device being wirelessly powered or recharging of the battery.

Even though this power range is early in its development cycle, there is already early talk about increasing the power level up to 65-90W. With each step in power, the more critical the design becomes in addressing EMI, efficiency and thermals.
The author would like to thank:

1) The power gurus from Spark Connected, Ken Moore, Emanuel Stingu and Yulong Hou, for their knowledge and testing data for “The Beast“.

2) National Technical Solutions, in Plano, TX, who performed the CISPR 25 testing.

3) TDK

Ken Moore, Spark Connected CEO
Ken Moore, CEO
Emanuel Stingu Spark Connected, CTO
Emanuel Stingu, CTO
Yulong Hou - Systems Engineer at Spark Connected
Yulong Hou - Systems Engineer

About Spark Connected

Spark Connected | powering the world, wirelessly

Spark connected is an industry leader specializing in multiple advanced and safe wireless power technologies that benefits a wide variety of applications in the Automotive, Industrial, Infrastructure, Medical, Telecom and Security, Robotics, Factory Automation, IOT, Smart Home, and Consumer markets.

Spark is transforming wireless power delivery and intelligent battery charging with innovative platforms, disruptive technology and breakthrough products enabling an enhanced user experience for all. The company specializes in Product Development and Engineering Solutions with a team of passionate innovators with decades of combined deep domain expertise.

Spark Connected is a Full Member of the Wireless Power Consortium.

Please forward inquiries to:
Marina Wolf/Ruwanga Dassanayake
(972) 855-8026
sales(at)sparkconnected.com

Malek Ramezani has been elected to the Foreign Object Detection Task Force co-chair position at the WPC

Spark Connected has been awarded co-chair positions at the Wireless Power Consortium.
Spark Connected has been awarded co-chair positions at the Wireless Power Consortium.

Dallas, TX. May 26, 2020.

Spark Connected, a global leader in developing advanced and innovative wireless power technology and system level solutions, has been elected to another co-chair position at the Wireless Power Consortium.

Spark Connected, a global leader in developing advanced and innovative wireless power technology and system level solutions, has been elected to another co-chair position at the Wireless Power Consortium.

Malek Ramezani, Senior Power Electronics Systems Engineer at Spark Connected, has been elected as the Co-Chair of the WPC Enhanced Foreign Object Detection Task Force (EFOD TF).

This task force works towards enhancing the current FOD approaches of Qi-certified wireless power solutions as well as developing new FOD practices to promote and guarantee the safe operation of any wireless power system seeking  Qi certification.

 


About WPC

Established in 2008, the Wireless Power Consortium is an open, collaborative standards development group of more than 500 member companies from around the globe. WPC’s member companies are large and small competitors and ecosystem partners representing brands from all parts of the industry and all parts of the globe. Members collaborate with a single purpose: worldwide compatibility of all wireless chargers and wireless power sources.

As wireless charging continues to evolve beyond consumer handheld devices, there are myriad of other new applications, such as laptops, tablets, drones, robots, connected car and the intelligent cordless kitchen. The WPC maintains and develops standards for a variety of different wireless power applications. This includes:

  • The Qi standard, for smartphones and other portable mobile devices. Qi delivers up to 15W today. A future extension will also deliver up to 60W to enable laptop charging in addition to charging smartphones and other portable mobile devices with wide positioning freedom.
  • The Ki Cordless Kitchen standard, for kitchen appliances, for delivering up to 2,200W.
  • The Medium Power standard, a simple low-cost solution delivering 30 – 200W for power tools, robotic vacuum cleaners, e-bikes, and other battery-powered devices that don’t require compatibility with the Qi standard for mobile phones charging.

With more than 5000 different Qi Certified wireless charging products in the market, the WPC uses a network of independent authorized test labs around the globe that test specific properties for safety, interoperability, and usability. Spark Connected is proud to serve on these committees and task forces, and advance the future of wireless charging and power in the market.

Malek Ramezani - WPC Co-Chair and Senior Power Electronics Systems Engineer at Spark Connected
Malek Ramezani, Senior Power Electronics Systems Engineer

About Spark Connected

Spark Connected | powering the world, wirelessly

Spark connected is an industry leader specializing in multiple advanced and safe wireless power technologies that benefits a wide variety of applications in the Automotive, Industrial, Infrastructure, Medical, Telecom and Security, Robotics, Factory Automation, IOT, Smart Home, and Consumer markets.

Spark is transforming wireless power delivery and intelligent battery charging with innovative platforms, disruptive technology and breakthrough products enabling an enhanced user experience for all. The company specializes in Product Development and Engineering Solutions with a team of passionate innovators with decades of combined deep domain expertise.

Spark Connected is a Full Member of the Wireless Power Consortium.

Please forward inquiries to:
Marina Wolf/Ruwanga Dassanayake
(972) 855-8026
sales(at)sparkconnected.com

Ken Moore featured in The Silicon Review – 30 Best Leaders to Watch 2020

Ken Moore - Silicon Review's 30 Best Leaders To Watch 2020
Ken Moore - Silicon Review's 30 Best Leaders To Watch 2020

May 14, 2020 – The Silicon Review

‘Powering the World, Wirelessly’: Spark Connected, a Dallas-based Tech Firm, Transforms Wireless Power Delivery and Battery Charging with Innovative Platforms, Disruptive Technology, and Breakthrough Products.

During the 1980s, the Ethernet cable was the biggest innovation of the decade. It let users connect to the World Wide Web and took them places they’ve never been before. However, when WiFi was invented in 1998, people moved away from Ethernet cables to WiFi as it promised wireless connectivity at better speeds. Importantly, having portable connected devices that are battery operated and can be charged wirelessly is the latest trend to hit the technological market.

In light of the above, we’re pleased to present Spark Connected – a pioneer in the wireless power industry.

Spark Connected was founded with a purpose to transform wireless power delivery and intelligent battery charging with innovative platforms, disruptive technology, and breakthrough products enabling an enhanced user experience for all.

The company specializes in product development and engineering solutions with a team of innovators who have over two decades of combined deep domain experience. Spark takes pride in delivering advanced end-to-end wireless power system solutions that benefit industries and markets as diverse as industrial, medical, automotive, telecom and consumer areas.

In Conversation with Ken Moore, Spark Connected CEO

Can you brief us about the history of your company?

Spark Connected was founded in 2017 in Dallas, Texas. With a focus on specialized product development and engineering solutions, the firm has produced cutting-edge inductive and resonant wireless power and charging solutions. We are early pioneers in creating safe products, passing and exceeding regulatory requirements. We have partnered with Infineon Technologies, AG and area full member of the Wireless Power Consortium (Qi). Our Spark team members hold WPC co-chair positions in the Mobile Laptop, Automotive and Next Generation Transmitter committees, where we help guide the future wireless power standards.

What is your greatest fear and how do you manage it?

My biggest fear in both technology and business is to stop moving forward. There is an old saying that some people are like sharks. A shark must continue swimming forward to breathe through its gills, and if a shark stops swimming, it will die. Technology is very similar in the sense that if you aren’t moving forward and innovating, then eventually you will lose your value in the market and be relegated to the dustbin of history. Spark is all about innovating faster than our competitors, who are often much bigger than we are.

What were the biggest initial hurdles to building your business and how did you overcome them?

The biggest initial hurdles to building our business were funding and market awareness. Funding a startup in the post-2008 era is difficult, and making customers aware of your existence in this information-overload age is even more difficult. To solve the funding issue, we took the self-funding route. I would not recommend this road for those who value their peace of mind, but in business, you often have to place bets on your vision and your ability to execute. For market awareness, there is no substitute for good old-fashioned relationship building and word of mouth campaigns.

‘It is difficult to start a venture, but far more difficult to maintain it’. How would you and your team interpret this saying?

This goes back to moving versus standing still. In the beginning, everything is new and exciting. But very soon, you have to execute on all those promises you made to the market. So you now have to maintain your focus on innovating ahead of your competition, while still executing so your current customers can develop their products. This is a delicate balance that many find difficult, if not impossible. As a leader, if you have done your job by building a strong team around a clear strategy, you can make the present a reality while still keeping your foot on the accelerator and moving forward.

If you had one piece of advice to someone just starting out, what would it be?

Talk to someone who has done it before (and been successful), and make them your mentor. It will save you quite a few stubbed toes and smashed thumbs.

What do you think is the most memorable moment in your career?

The most memorable moment would be when I received my first promotion ever to lead a team. It changed me in ways I never thought possible. A team is a very effective mirror that forces you to try and be a better leader, and a better person.

What are your future focus areas?

If our technology can improve the user experience of someone who is trying to power or charge a device, then that is where our focus will be.


The Visionary Leader of Spark Connected: Ken Moore

Ken Moore, CEO of Spark Connected, has always been interested in taking things apart. Alarm clocks, radios…whatever he could get his hands on. Then in the mid-1970s, his father brought him to “bring your sons/daughters to work day”, and sat him down in front of a very early computer terminal. He ran a program and the computer asked Ken his name. When he did so it responded “Hello Ken, my name is PDP. Would you like to play a game with me?” Ken was completely fascinated by that funny green TV that seemed so alive, and after that it was all about technology.

Ken went on to attend the University of California, Irvine, where he received his BS in Electrical Engineering, and the Cox School of Business at Southern Methodist University where he received his MBA. Ken has been elected as the Co-Chair of the Wireless Power Consortium (WPC) Mobile Laptop Task Force.

Ken Moore, Spark Connected CEO

“If our technology can improve the user experience of someone who is trying to power or charge something, then that is where our focus will be.” – Ken Moore, Chief Executive Officer at Spark Connected.

Ken Moore in Silicon Review Best Leaders to Watch 2020

About Spark Connected

Spark Connected | powering the world, wirelessly

Spark connected is an industry leader specializing in multiple advanced and safe wireless power technologies that benefits a wide variety of applications in the Automotive, Industrial, Infrastructure, Medical, Telecom and Security, Robotics, Factory Automation, IOT, Smart Home, and Consumer markets.

Spark is transforming wireless power delivery and intelligent battery charging with innovative platforms, disruptive technology and breakthrough products enabling an enhanced user experience for all. The company specializes in Product Development and Engineering Solutions with a team of passionate innovators with decades of combined deep domain expertise.

Spark Connected is a Full Member of the Wireless Power Consortium.

Please forward inquiries to:
Marina Wolf/Ruwanga Dassanayake
(972) 855-8026
sales(at)sparkconnected.com

Automotive In-Cabin 15W Wireless Charger – Eval Module featured in PowerPulse

The Beast - in-cabin wireless charging solution featured in PowerPulse.net
The Beast - in-cabin wireless charging solution featured in PowerPulse.net

April 13, 2020. Featured on PowerPulse.net.

The KIT_AURIX_TC21_SC wireless power transmitter evaluation module from Infineon Technologies is a high-performance, easy-to-use development system for the design of automotive in-cabin wireless charging solutions.

The KIT_AURIX_TC21_SC wireless power transmitter evaluation module from Infineon Technologies is a high-performance, easy-to-use development system for the design of automotive in-cabin wireless charging solutions. The system supports all the basic functions of a Qi-compliant, wireless charger for automotive applications.

The three-coil transmitter provides the designer a certified platform that drastically reduces the development time of their end application.  The system supports WPC v1.2.4 receivers up to 15W, as well as all legacy Qi certified receivers.  Smartphones with proprietary fast charge capability are also supported.

Additional features and future standards changes can be supported by the easy-to-upgrade software. The KIT_AURIX_TC21_SC wireless power transmitter evaluation module was developed in cooperation with Spark Connected.

The Beast - block diagram - Automotive in-cabin Wireless Charging transmitter by Spark Connected, Inc.

Key Features:

  • WPC Qi v1.2.4 certified
  • CISPR-25 Class 4 certified
  • Supports full 15W charging
  • Support fast charging enabled devices (7.5W and 9W)
  • Unique power drive architecture minimizes EMI
  • Improved accuracy Foreign Object Detection (FOD)
  • Full power with a 6 -19V input supply, supporting vehicle stop/start
  • Fixed frequency architecture meets strict automotive requirements
  • Supports future products and standards with a firmware upgrade
  • Single Infineon AURIX™ Controller
  • Built-in CAN interface for integration into communication infrastructure
  • AUTOSAR support
  • Built-in security functionality
  • NFC radio interface for additional functionality and safety features
  • Future: Qi v1.3 including Authentication
  • Optional active thermal management, system monitoring and charge-rate foldback

Benefits:

  • Full power 15 W without exotic thermal management
  • Supports custom charging profiles and industry standards on the same hardware
  • Supports custom coils, and greater than three coils
  • Foreign Object Detection (FOD) with improved accuracy quality-factor monitoring
  • Achieves charging rates equivalent to wired charging
  • Foreign object detection capability can be extended beyond existing standards to improve detection
The KIT_AURIX_TC21_SC wireless power transmitter evaluation module. Power Pulse and Infineon

The KIT_AURIX_TC21_SC wireless power transmitter evaluation module.

About Spark Connected

Spark Connected | powering the world, wirelessly

Spark connected is an industry leader specializing in multiple advanced and safe wireless power technologies that benefits a wide variety of applications in the Automotive, Industrial, Infrastructure, Medical, Telecom and Security, Robotics, Factory Automation, IOT, Smart Home, and Consumer markets.

Spark is transforming wireless power delivery and intelligent battery charging with innovative platforms, disruptive technology and breakthrough products enabling an enhanced user experience for all. The company specializes in Product Development and Engineering Solutions with a team of passionate innovators with decades of combined deep domain expertise.

Spark Connected is a Full Member of the Wireless Power Consortium.

Please forward inquiries to:
Marina Wolf/Ruwanga Dassanayake
(972) 855-8026
sales(at)sparkconnected.com

About Infineon Technologies AG

Infineon Technologies AG is a world leader in semiconductor solutions that make life easier, safer and greener. Microelectronics from Infineon is the key to a better future. In the 2019 fiscal year (ending 30 September), the company reported sales of around €8 billion with about 41,400 employees worldwide. Infineon is listed on the Frankfurt Stock Exchange (ticker symbol: IFX) and in the USA on the over-the-counter market OTCQX International Premier (ticker symbol: IFNNY). Please visit Infineon more information.

Press Release – Spark Connected and Vega partner on EVX Supercar

Spark Connected and Vega partner on the 804hp Electric Super Car At The Geneva International Motor Show 2020 - The Beast
Spark Connected and Vega partner on the 804hp Electric Super Car At The Geneva International Motor Show 2020 - The Beast

GENEVA, SWITZERLAND. February 17, 2020.

Spark Connected, a global leader in developing advanced and innovative wireless power technology and system level solutions, announced today a partnership with Vega Innovations on the electric vehicle, In-Cabin wireless charging solution.

Spark Connected, a global leader in developing advanced and innovative wireless power technology and system level solutions, announced today a partnership with Vega Innovations on the electric vehicle, In-Cabin wireless charging solution.

Vega EVX, the all-electric supercar has integrated Spark Connected’s in-cabin wireless charging technology, based on the solution named The Beast, into its luxurious cockpit. Supporting all fast charge smartphones, the solution provides an integrated smart phone wireless charging feature, complementing the Vega’s state-of-the-art interior and technology features.

According to Ruwanga Dassanayake, Chief Operating Officer at Spark Connected, “The very talented team of innovators at Vega has actualized an impressive feat in launching the stunning VEGA EVX. We are pleased to have partnered with the team in combining Spark’s automotive in-cabin wireless charging technology into the Vega. Very proud of this exciting milestone for Sri Lanka on the world stage”.

Vega Innovations combined dual electric motors and a light carbon-fiber construction, allowing the Vega EVX to retain its remarkably light weight of 2,090kg even with a dense on-board lithium-ion battery pack. This is a result of innovative packaging, safety, battery management, system hardware, as well as firmware and software technologies.

According to CEO Harsha Subasinghe, “The Vega EVX is South Asia’s first all-electric supercar which uses innovative, modular and fully scalable systems that can be customized to optimize performance and drive-train technology. Our partnership with Ruwanga and his Spark Connected team has been great that has resulted in a high performance and EMI best-in-class wireless charging solution that further enhances the user experience in the Vega”.

The Beast-based in-cabin wireless charging solution is a high performance solution that meetings stringent requirements for integration into the automotive cockpit. The solution has been certified CISPR-25 Class 4, an industry first, to meet strict automotive in-cabin emissions requirements for electromagnetic interference (EMI) and electromagnetic compatibility (EMC).

Ruwanga Dassanayake, Spark Connected COO

“The very talented team of innovators at Vega has actualized an impressive feat in launching the stunning VEGA EVX. We are pleased to have partnered with the team in combining Spark’s automotive in-cabin wireless charging technology into the Vega. Very proud of this exciting milestone for Sri Lanka on the world stage.” – Ruwanga Dassanayake, Chief Operating Officer at Spark Connected.

About Spark Connected

Spark Connected | powering the world, wirelessly

Spark connected is an industry leader specializing in multiple advanced and safe wireless power technologies that benefits a wide variety of applications in the Automotive, Industrial, Infrastructure, Medical, Telecom and Security, Robotics, Factory Automation, IOT, Smart Home, and Consumer markets.

Spark is transforming wireless power delivery and intelligent battery charging with innovative platforms, disruptive technology and breakthrough products enabling an enhanced user experience for all. The company specializes in Product Development and Engineering Solutions with a team of passionate innovators with decades of combined deep domain expertise.

Spark Connected is a Full Member of the Wireless Power Consortium.

Please forward inquiries to:
Marina Wolf/Ruwanga Dassanayake
(972) 855-8026
sales(at)sparkconnected.com

About Vega Innovations

Vega Innovations is an electric vehicle (EV) automobile manufacture of electric super cars, based in Colombo, Sri Lanka. Vega also designs and manufactures EV components such as high-performance inverters, drivetrains and battery packs; as well as provide EV research and development (R&D) services to clients worldwide.

Founded in 2013 December by Dr. Harsha Subasinghe CEO of CodeGen International and Dr Beshan Kulapala, with a vision of building high performance, cost effective, sustainable technologies to disrupt the EV market. On its six-year journey, Vega has developed South Asia’s first electric super car, Vega EVX, and will be unveiled at the Geneva International Motor Show in March 2020. Vega is also developing alternative, mass market, transportation vehicles with its international partners. Vega Innovations is a startup company, part of CodeGen International.

For more information visit Vega Innovations.

Press Release – Former IDT CEO Joins Spark Connected as an Advisory Board Member

Jeffrey S. McCreary, Spark Connected Advisory Board
Jeffrey S. McCreary, Spark Connected Advisory Board
Spark Connected, a leading technology developer of advanced and innovative wireless power system solutions, today announced that Jeffrey McCreary has joined Spark Connected as an advisory board member.

DALLAS, TEXAS (PRWEB) DECEMBER 05, 2018

DALLAS, TEXAS. December 4, 2018. Spark Connected, a leading technology developer of advanced and innovative wireless power system solutions, today announced that Jeffrey McCreary has joined Spark Connected as an advisory board member.

McCreary served as interim President and CEO of IDT and ISOLA during major turnaround initiatives. He is a former Senior Vice-President of Texas Instruments and managed the World-Wide Sales and Marketing organizations. At TI, Jeff contributed in several other executive positions, including General Manager of Advanced Logic Products and General Manager of Worldwide Military Semiconductors.

”The convenience and effectiveness of wireless power makes it one of the most important technological developments in the industry,“ said Jeff McCreary. “The complexity of the solutions, however, demand domain expertise and a commitment fortified by experience. The team at Spark Connected reflects these attributes and that is one of the many reasons I am pleased to join them as an advisor,” said McCreary.

Jeff is an NACD Board Leadership Fellow and a member of the board of directors of Benchmark Electronics (BHE). He previously served as a director of technology companies: Integrated Device Technology (IDTI); MIPS Technologies (MIPS); the Gennum Corporation (GND); and, the Isola Group.

“On behalf of the entire organization, we warmly welcome Jeff to our advisory board,“ said Ruwanga Dassanayake, Chief Operating Officer, Spark Connected. “Jeff brings broad industry experience and a track record of success having led global semiconductor companies. His counsel will be invaluable to Spark as we continue to innovate and grow in new wireless power markets and applications.”

Jeffrey S. McCreary, Spark Connected Advisory Board

The convenience and effectiveness of wireless power makes it one of the most important technological developments in the industry. The complexity of the solutions, demand domain expertise and a commitment fortified by experience. The team at Spark Connected reflects these attributes.”, said Jeffrey McCreary, Advisory Board Member at Spark Connected.

About Spark Connected

Spark Connected | powering the world, wirelessly
Spark connected is an industry leader specializing in multiple advanced and safe wireless power technologies that benefits a wide variety of applications in the Automotive, Industrial, Infrastructure, Medical, Robotics, Security, Factory Automation, IOT, Smart Home, and Consumer markets.
Spark is transforming wireless power delivery and intelligent battery charging with innovative platforms, disruptive technology and breakthrough products enabling an enhanced user experience for all. The company specializes in Product Development and Engineering Solutions with a team of passionate innovators with decades combined deep domain expertise.

AURIX™ is a trademark of Infineon Technologies AG.

Please forward inquiries to: sales(at)sparkconnected.com
For more information visit: https://www.sparkconnected.com
Spark Connected is a Full Member of the Wireless Power Consortium

Spark Connected launches new wireless charging solutions at Mobile World Congress 2018

Ken Moore and Ruwanga Dassanayake: Innovative Inductive Resonant Leadership
Ken Moore and Ruwanga Dassanayake: Innovative Inductive Resonant Leadership

Barcelona, Spain – February 26th, 2018

The GSMA Mobile World Congress is the world’s largest for the mobile industry, incorporating a thought-leadership conference that features prominent executives representing mobile operators, device manufacturers, technology providers, vendors and content owners from across the world.

Ruwanga Dassanayake at the GSMA Mobile World Congress
Ruwanga Dassanayake at the GSMA Mobile World Congress

This year’s Mobile World Congress has proven it’s going to be an exciting year for technology, especially for wireless charging. In years past, one would be hard pressed to find a wireless charging product on the exhibition floors. This year was different. With Apple adopting wireless charging technology for the iPhone as well as phones like the Samsung Galaxy S9/9+, Sony Xperia XZ2 and Nokia 8 Sirocco there was plenty of momentum. The excitement was in the air with a sense that wireless power has finally arrived.

“We are very excited to launch our new wireless power products at Mobile World Congress this year and the reception and customer interest has been extremely positive. Spark Connected was the only company to show case multiple wireless charging technologies – for smart phones and applications beyond charging phones – including inductive and resonant solutions,” said Ruwanga Dassanayake, Chief Operating Officer for Spark Connected.