Qi-Certified 3-Coil 15W Wireless Charger Transmitter Evaluation Kit

October 26, 2019 by Paul Shepard

The STEVAL-ISB047V1 wireless battery charger transmitter evaluation kit from STMicroelectronics consists of the STEVAL-ISB047V1T evaluation board and STEVAL-WBCDNGV1 USB-UART dongle. The kit is designed for charging devices such as smartphones or tablets where high power levels are required.

The evaluation board supports wireless battery charging of Qi-compliant devices up to 15W. It also supports proprietary fast charging modes up to 10W.

The STEVAL-ISB047V1 transmitter is based on the STWBC-MC and features a cost-effective half-bridge topology, offering external interface via UART. The STEVAL-ISB047V1 evaluation kit is a full solution, complete with boards, firmware, a GUI for debugging, schematics, layout files and bill of materials.

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Tools for STEVAL-ISB047V1 and allow users to access runtime information such as power delivered, regulation error and protocol status. Parameters can also be adjusted with these tools.

The STEVAL-ISB047V1 transmitter bottom of board

Summary of Features

  • STWBC-MC digital controller
  • MP-A15 3-coil array
  • 15W potential power
  • Flexible input voltage: 5- to 20-V from USB-C or dc jack
  • 5W mode when connected to 5-V USB input or dc jack
  • Fixed-frequency operation
  • WPC Qi1.2.4 standard certified
  • Robust demodulation algorithm, with triple path (V, I, f)
  • Foreign object detection (FOD)
  • Active presence detection
  • UART protocol to control and monitor the system
  • Complete reference design (evaluation board, schematics, PCB layout, firmware and tools)
  • 2-layer PCB
  • Low standby power consumption
  • Flash memory based
  • CE certified
  • RoHS compliant
  • WEEE compliant