Overview

This True Wireless Stereo (TWS) and hearing aid earbud charger cradle/box solution integrates USB-C, legacy USB-A and wireless power inputs paths with a highly optimized TWS charger power management IC (PMIC).

The charger PMIC combines a DC/DC buck charger with a reverse boost function and two separately controlled LDOs to provide individually controlled voltage levels to the earbuds. The solution also offers optional UART-based power line communication (PLC) to control the required charging voltage and communicate SoC/SoH information and more.

System Benefits​:

  • Highly integrated solution requiring a minimal number of discrete components
  • USB BC1.2 support
  • PLC reduces the number of pins between cradle and earbud
  • Up to 2A battery charging capability
  • Reverse boost with up to 700mA
  • Charger PMIC with 0.1µA leakage in ship mode
  • Optional Bluetooth® Low Energy connectivity​

Applications

  • True Wireless Stereo (TWS) charger cradles
  • Hearing aid charger cradles
  • Wearable and remote sensor charger cradles

News & Blog Posts

True Wireless Stereo (TWS) Earbud Charger Cradle Blog Post May 21, 2022
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