SmartPower Technology

WIRELESS CHARGING MODULE

May 10th, 2015

Elecraft, Inc. Tel：03-3517-6207

Japan distributor

Company Profile

Established in 2014/6/9.

Location: Taipei, Taiwan

Capital: USD$350,000.

Employees: Senior HW/SW/FW engineers, and production managers who work with OEM factories.

Products: Wireless charging modules for handset and vehicle application.

Patents: 2 patents (Invented) in Taiwan, China and USA.

Mother Company: KnowMax (Ten-Year R&D Experiences in Power Electronics).

Distributor: Elecraft, Inc. in Japan.

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Wireless Charging Market Trend

Institution of Standard: WPC’s Qi,

PMA, A4WP

Life proof device

without any connector or

cable

Wearable devices need water-proof

features

Wireless Vehicle

Charging

Value added service

infrastructure

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Wireless Power Standard

• WPC is dominated in the global market.• Automobile Industry adopts WPC as well.

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Mass-Production Products

TMS320F28032PN

Power Source Device Signal

PWM9, 10

PWM11, 12MOSFETSwitch

Filter

DC to DC(Input

Voltage)

PWM13(HRPWM)

Device Signal

PWM1, 2

PWM3, 4MOSFETSwitch

Filter

Device Signal

PWM5, 6

PWM7, 8MOSFETSwitch

Filter

• WPC Type A11 Transmitter• 5W TX• Comply with WPC SPEC version

1.1.2• Foreign Object Detection (FOD)

software tuning and setting.

PowerSource

PWM1,2

PWM3,4MOSFETSwitch

FilterDevice Signal

C2000 Wireless Charging RX

• WPC Type A13 Transmitter• 10W TX• Comply with WPC SPEC version

1.1.2• Foreign Object Detection (FOD)

software tuning and setting.• Voltage control can avoid to

interfere with Key FOB• Free position

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A11 Thermal Test

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A13 Thermal Test

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Wireless Charging Product Considerations

Safety

• Avoid metal object interference.

• No interference with vehicle key fob.

• EMI test passed.

Compatibility

• Comply with the “Qi” standard.

• Prototype has been approved by WPC.

Efficiency

• Support 5 /10 / 20 Watt wireless charging specification.

• System High Efficiency8

BenchmarkSmartPower WPC Module Others

Foreign Object Detection (FOD) Calibration

Software Auto Calibration Very Limited Suppliers with Hardware Calibration

Component Tolerance Middle Tolerance Very Small Tolerance

Component Changeable Yes No or Limited

Customized ControlInterface (CCI)

Can Be Customized in Protocol and HW I/F (I2C, UART, CAN Bus…)

Fixed or no Interface

Fix Frequency Solution (FFS) to Avoid Key FOB

Yes Very Few

System Parameters Calibration

Software Auto Calibration No or Manual Calibration

• FOD, CCI, and FFS are our major advantages over the other suppliers.• SP can provide the customers the most reliable WPC modules.• WPC modules by adopting TI/Freescale/IDC/Panasoinc chip solutions,

usually there is neither FOD nor FFS.9

Safety : FOD (Foreign Object Detection)

Source: Philips Research, March 20, 201410

FOD Experiment Results

Source: Philips Research, March 20, 2014

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SP 20W Middle Power FOD Test : Thermal Result

Coin Temperature can be heated up to 95℃ in 1 minute.

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FOD Important Requirements:

Please make sure that your WPC module suppliers can calibrate FOD parameters for each device.

Please make sure that your WPC module suppliers can have a production process to verify FOD for each device.

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SmartPower - Components Database Analysis

C2000Power

Source

PWM1,2

PWM3,4MOSFET

Switch

FilterDevice Signal

Wireless Power TX

Server DatabaseDatabase Analysis to check

FOD parameters

ONLY SmartPower has the database (know-how accumulation) for the FOD calibration of the mass-production.

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Software Tool and Database Analysis

SmartPower ConfidentialTesting Process to check parameters.

PASS

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FOD Example - Automotive Warning Msg.

Does NOT meet WPC Standard.

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CE4A

Source: WPC Website

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Audi’s Phone Box

Automotive

• Toyota • Chrysler • Audi• Daimler• Honda• BMW

Chrysler

Honda

Toyota Camry

Source: WPC Website, and Toyota Website

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Why Fixed Frequency in the Automotive?

Key FOB is using 125KHz or others, but the Frequency is fixed.

WPC Frequency Control System from 110KHz to 205KHz.

WPC Fixed Frequency Control System can select the frequency to avoid the interference with the key FOB system.

We use 110KHz as the example.

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WPC Fixed Frequency EMI in the Lab.

Can also move to 200KHz.

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Why Choose SmartPower Solution?

Strong Technical Know-How in Wireless Charging and in Power Electronics (KnowMax).

Real-Time and/or On-Site Technical Support from Taiwan.

Customization Service is Provided to meet customer requirements.

Top and Excellent Wireless Charging Module for Automobile Application in the world (per Auto. Spec. and Requirement).

Either FOB TW or FOB China.

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WPC member: KNOWMAX Technology

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Allied Factories for Automobile Requirements

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