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Qi-based wireless power receiver reference design using STWLC68 for wearable applications up to 2.5W

STEVAL-ISB68WA

Overview

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 10x10 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.

Main features

Based on STWLC68 wireless power receiver
Designed according to Qi 1.2.4 specifications
Constant 5 V output voltage (default setting)
Up to 2.5 W output power
Foreign Object Detection (FOD) supported
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
RoHS compliant

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-03 09:56:01

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