STMicroelectronics STWLC99 Qi-Compliant Wireless Power Receiver

STMicroelectronics STWLC99 Qi-Compliant Wireless Power Receiver is designed for applications with up to 100W output power. The chip supports Qi specifications 1.2.4 and 1.3 for inductive communication protocols with Extended Power Profile (EPP) and the proprietary ST Super Charge (STSC) protocol for fast charging. This highly integrated wireless power receiver features a low drop-out linear regulator and an integrated low-loss synchronous rectifier for high efficiency with low power dissipation. Users can access and modify the configuration parameters via the I2C interface for customized applications, and the final configuration parameters are kept in the embedded Few Times Programmable (FTP) non-volatile memory and retrieved at power-up. STMicroelectronics STWLC99 Qi-Compliant Wireless Power Receiver also operates as a wireless transmitter up to 25W (coil dependent). The STWLC99 comes in a chip-scale package.

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

Features

  • Up to 100W output power
  • Up to 25W output power in Tx mode
  • Qi 1.2.4 and 1.3 compliant
  • Integrated low RDS-ON synchronous rectifier with ≥98% efficiency
  • Adaptive rectifier configuration (ARC) mode for spatial freedom
  • Low drop-out linear regulator with output current and input voltage loops
  • Programmable output voltage 4V to 20V in steps of 25mV
  • 64MHz 32bit Arm® Cortex®-M0+ core with 12KB FTP, 8KB RAM, 48KB ROM
  • 11-bit A/D converter
  • Configurable GPIOs
  • I2C interface
  • Watchdog timer
  • Multi-level ASK modulator, Enhanced FSK demodulator
  • Accurate current sense system for foreign object detection (FOD)
  • Coil Q-factor measurement for FOD in Tx mode
  • Overvoltage, overcurrent, and thermal protections
  • Proprietary protocol for power negotiation and authentication
  • Flip chip 121 bumps (4.859mm x 4.859mm)

Applications

  • Industrial
  • Power tools
  • Autonomous robots
  • Smartphones
  • Tablets and laptops
  • Cordless power tools
  • Power banks

STMicroelectronics STWLC99 Qi-Compliant Wireless Power Receiver