SLDU028A January   2018  – March 2020 TPS65313-Q1

 

  1.   TPS65313-EVM User’s Guide
    1.     Trademarks
    2. 1  TPS65313-EVM Top View With Basic External Connections
    3. 2  TPS65313-EVM Input, Output Voltages, and Load Current Requirements
    4. 3  TPS65313-EVM Jumper Settings
    5. 4  TPS65313-EVM GUI Installing and Opening the GUI
    6. 5  TPS65313-EVM Power-Up and Power-Down Procedure
    7. 6  TPS65313 GUI
      1. 6.1 Device Controls Page
        1. 6.1.1 Re-Initialize USB2ANY Button
        2. 6.1.2 WAKE Button
        3. 6.1.3 Power Off Button
        4. 6.1.4 Device Status Update
        5. 6.1.5 State Transitions
        6. 6.1.6 Enable Q&A Watchdog
        7. 6.1.7 MCU Error Signal Monitor (ESM)
        8. 6.1.8 SPI Status Bits
        9. 6.1.9 Moniter ENDRV and NRES Button
      2. 6.2 Register Map Page
      3. 6.3 EEPROM Programming Page
    8. 7  TPS65313-EVM Typical Plots
      1. 7.1 Efficiency Plots
      2. 7.2 Power-Up Plots
      3. 7.3 Power-Down Plots
      4. 7.4 Ripple Voltage Plots
      5. 7.5 Load Transient Plots
      6. 7.6 Stability Measurements
    9. 8  TPS65313-EVM Schematic Diagram
    10. 9  TPS65313-EVM Part List
    11. 10 PCB Layer Diagram
    12. 11 Description of the Watchdog Algorithm Implemented on EVM
  2.   Revision History

6.1.5 State Transitions

Clicking the SAFE to DIAGNOSTIC button makes the device go from the SAFE state to the DIAGNOSTIC state. This transition is done by writing the SAFE_EXIT register with 0x55 and the MASK_DIAG_EXIT register with 0x55.

Clicking the DIAGNOSTIC to ACTIVE button makes the device go from the DIAGNOSTIC state to the ACTIVE state. This transition is done by writing the CLR_CTRL_LOCK register with 0xAA and setting the DIAG_EXIT bit to 1b (writing the SAFETY_CHECK_CTRL register with 0x1).

Before the device goes from the SAFE state to the DIAGNOSTIC or from the DIAGNOSTIC state to the ACTIVE state, the watchdog must be configured correctly. Without configuring the watchdog, the WD Fail Count field increases to 15 which puts the device back in the SAFE state.