SLUAA04A june   2020  – may 2023 BQ25150 , BQ25155 , BQ25618 , BQ25619 , TS5A12301E , TS5A3157 , TS5A3159A , TS5A6542

1.   1
2.   High-Efficiency Charging for TWS Using a 2-Pin Interface
3.   Trademarks
4. 1 Introduction
5. 2 System Overview
   1. 2.1 Charging Case
      1. 2.1.1 BQ25619
      2. 2.1.2 TLV62568P
      3. 2.1.3 TPS22910A
      4. 2.1.4 TS5A12301E
      5. 2.1.5 MCU
   2. 2.2 Earbuds
      1. 2.2.1 BQ25155
      2. 2.2.2 TPS22910A
      3. 2.2.3 TS5A12301E
      4. 2.2.4 BT/SOC
6. 3 Charging Case Algorithm Implementation
   1. 3.1 Initialization and Main Code
   2. 3.2 UART Interrupt and Output Voltage Adjustment
7. 4 Earbud Algorithm Implementation
   1. 4.1 Initialization and Main Code
   2. 4.2 Interrupt and Transmission
8. 5 Test Procedure
9. 6 Test Results
   1. 6.1 Dynamic Voltage Adjustment
   2. 6.2 BQ25619 with 4.6-V Output
   3. 6.3 Standard Boost with 5V Output
10. 7 Summary
11. 8 Schematics
12. 9 PCB Layout
13. 10Software
    1. 10.1 Charging Case main.c
    2. 10.2 Earbuds main.c
14. 11Revision History