STEVAL-ISB68WA: 2.5W, Qi-Based Wireless Power Receiver


The STEVAL-ISB68WA is a reference design for wearable applications based on the STWLC68 wireless power receiver. The kit includes a receiver board with a small 15 mm diameter receiving coil and provides a constant output voltage with 2.5 W maximum output power.

The board supports Foreign Object Detection (FOD) for safe operation and is ready for immediate use when placed on a suitable wireless power transmitter.

An on-board LED indicates connection with the transmitter succeeds and enabled output voltage, and a programmable interrupt output is available to inform the host system in user applications.

The complete application is confined in a 10 x10 mm PCB area and the layout is designed to facilitate probing and user customization.

A free STSW-ISB68GUI Graphic User Interface (GUI) is provided to monitor and configure the receiver on your PC using the USB-to-I²C dongle included in the kit.


  • Based on STWLC68 wireless power receiver

  • Designed according to Qi 1.2.4 specifications

  • 400 kHz I²C interface for communication with host system

  • Compact 10x10 mm application area

  • Complete kit includes receiver board, USB-to-I²C bridge dongle and GUI


Manufacturer STMicroelectronics
Category Power Management
Sub-Category Inductive Charging / Wireless Power
Eval Board Part Number 497-STEVAL-ISB68WA-ND
Eval Board Supplier STMicroelectronics
Eval Board Normally In Stock
Voltage Out 5 V
Current Out 500 mA
Protocol Inductive, Qi-Compliant
Voltage In - Not Given
Current In - Not Given
Standard(s) Qi v1.2.4
Features Foreign Object Detection (FOD)
GUI / Design Software
I²C Interface
Over Current Protection
Over Voltage Protection
Thermal Protection
Frequency 130 ~ 170 kHz
No-load Input Power @ Conditions - Not given
Efficiency @ Conditions >60%, 5V @ 1.25 ~ 2.5 W (Rx)
Component Count + Extras 29 + 1
Design Author STMicroelectronics
Main I.C. Base Part STWLC68
Date Created By Author 2020-01
Date Added To Library 2020-03

Eval Board

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Quantity Available: 30