SLUUCT6 April   2024 BQ25186

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 EVM Setup
    2. 2.2 EVM Connectors and Test Points
  8. 3Implementation Results
    1. 3.1 Testing Procedures
      1. 3.1.1 Equipment
      2. 3.1.2 Charge Mode
      3. 3.1.3 Ship Mode
      4. 3.1.4 Shutdown Mode
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  10. 5Additional Information
    1. 5.1 Trademarks

3.1.4 Shutdown Mode

To enter the Shutdown Mode state, connect the equipment as follows:

  • Power Supply PS #1: VIN of the BQ25186EVM at 0V or disconnected
  • Power Supply PS #2: VBAT of the BQ25186EVM at 3.7V
  • Scope Channel SC #1: VIN at TP5
  • Scope Channel SC #2: VBAT at TP8
  • Scope Channel SC #3: VSYS at TP6
  • Scope Channel SC #4: TS/MR at TP11

Turn ON power supply #2. Enter Shutdown Mode by setting the EN_RST_SHIP bits in the SHIP_RST register (0x09) to 2b01. Users are in Shutdown Mode when the voltage on the SYS pin (SC #2) falls to 0V and the voltage on the TS/MR pin falls to 0V.

BQ25186EVM SHIP_RST Register: Enabling Shutdown ModeFigure 3-8 SHIP_RST Register: Enabling Shutdown Mode

Alternatively, Ship Mode can be entered through a long button press. Turn ON power supply #2. With VSYS active (not in Ship Mode or Shutdown Mode), make sure that the PB_LPRESS_ACTION bits are set to 2b11: Enable Shutdown Mode. After holding the button SW1 for longer than MR_LPRESS (default: 2b01 (10s), the voltage on SYS (SC #3) falls to 0V.

BQ25186EVM SHIP_RST Register: Long Press Action to Enable Shutdown ModeFigure 3-9 SHIP_RST Register: Long Press Action to Enable Shutdown Mode

To exit Ship Mode, turn on VIN at 5V. Exiting Shutdown Mode enables the VSYS output.