New 100-Watt Inductive Wireless Power Receiver with Qi-compliant Charging for Power Tools and Autonomous Robots

Published  December 2, 2022   0
S Staff
New 100Watt Inductive Wireless Power Receiver

STMicroelectronics has revealed a wireless power receiver with the industry’s highest available power rating of 100 Watts. This new STWLC99 device can recharge high-end smartphones with the largest battery capacity in less than 30 minutes.

In addition to enhancing user convenience, high-power wireless charging lets designers create industrial products that are free of power sockets and cords, which can deliver various advantages. Eliminating the charging socket can save space and allow sealing against water or dust ingress in challenging environments. Complications due to twisting or tangling of the cord can be avoided. Independently mobile devices such as robots and drones can recharge easily without a mechanism or human intervention to connect the cable.

Features of STWLC99 Wireless Power Receiver:

  • 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
  • ARC(Adaptive Rectifier Configuration) 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 GPIO's
  •  I 2C Slave, Master interface
  • Watchdog timer
  •  Multi-levels ASK modulator, Enhanced FSK demodulator
  • Accurate current sense system for Foreign Object Detection(FOD)
  • Coil Q-factor measurement for FOD in Tx mode
  • Over voltage, over current and thermal protections
  •  Proprietary protocol for power negotiation and authentication
  • Suitable for industrial applications, power tools, autonomous robots

Housed in a 4.859m x 4.859mm wafer-level chip-scale package (WLCSP), the STWLC99 is in production now and available from $2.50.