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Introduction, features, and applications of STMicroelectronics’ STWLC99 Qi-compatible wireless power receiver

2/28/2024 9:05:00 AM

Summary: Designed for applications with up to 100W output power, supporting Qi specifications 1.2.4 and 1.3.

STMicroelectronics' STWLC99 Qi-compatible wireless power receiver

STMicroelectronics' STWLC99 Qi-compatible wireless power receiver is designed for applications with output powers up to 100W. The chip supports Qi specifications 1.2.4 and 1.3, the inductive communication protocol for Extended Power Profile (EPP), and the proprietary ST Super Charge (STSC) protocol for fast charging. This highly integrated wireless power receiver features a low-dropout linear regulator and integrated low-loss synchronous rectifier for high efficiency and low power consumption. Users can access and modify configuration parameters through the I(2)C interface for custom applications, with final configuration parameters saved in embedded several-times programmable (FTP) non-volatile memory and retrieved at power-up. STMicroelectronics' STWLC99 Qi-compatible wireless power receiver can also be used as a wireless transmitter up to 25W (coil dependent). STWLC99 adopts chip scale packaging.

The STWLC99 receiver is suitable for industrial applications, power tools, autonomous robots, smartphones, tablets and laptops, cordless power tools and power banks.


characteristic

  • Output power up to 100W

  • Output power up to 25W in Tx mode

  • Compatible with Gas 1.2.4 and 1.3

  • Integrated low RDS-ON synchronous rectifier, efficiency ≥98%

  • Space freedom in adaptive rectifier configuration (ARC) mode

  • Low dropout linear regulator with output current and input voltage loops

  • Programmable output voltage 4V to 20V in 25mV steps

  • 64MHz 32-bit Arm Cortex-M0+ core, 12KB FTP, 8KB RAM, 48KB ROM

  • 11-bit A/D converter

  • Configurable GPIOs

  • (2) C interface

  • watchdog timer

  • Multi-level ASK modulator, enhanced FSK demodulator

  • Precision Current Sensing System for Foreign Object Detection (FOD)

  • FOD coil q factor measurement in Tx mode

  • Overvoltage, overcurrent and thermal protection

  • Proprietary protocol for power negotiation and certification

  • Flip chip 121 bumps (4.859mm x 4.859mm)


app

  • industry

  • electrical tools

  • autonomous robot

  • smart phone

  • Tablets and laptops

  • cordless power tools

  • bank of power

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