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

Summary

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.

KEY FEATURES

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

Specifications

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	Board not Stocked
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