SLVAEI5A december   2019  – june 2023 TPS25830-Q1 , TPS25830A-Q1 , TPS25831-Q1 , TPS25840-Q1

 

  1.   1
  2.   TPS25830, TPS25831-Q1, and TPS25840-Q1 Short-to-Battery Application
  3.   Trademarks
  4. 1Introduction
  5. 2Short-to-Battery Conventional Application
    1. 2.1 External FET VBUS/DP_IN/DM-IN Short-to-VBAT Application
      1. 2.1.1 VBUS Short-to-VBAT Application
      2. 2.1.2 DP_IN/DM_IN Short-to-VBAT Application
      3. 2.1.3 VBUS /DP_IN/DP_IN Short-to-VBAT Application Summary
    2. 2.2 Without External FET VOUT/DP_IN/DM-IN Short-to-VBAT Application
      1. 2.2.1 VOUT/CSN Short-to-VBAT Application
      2. 2.2.2 DP_IN/DM_IN Short-to-VBAT Application
      3. 2.2.3 VOUT/DP_IN/DP_IN Short-to-VBAT Application Summary
    3. 2.3 CC1/CC2 Short-to-VBAT Application
  6. 3Short-to-Battery Special Application
    1. 3.1 External FET VBUS/DP_IN/DM-IN Short-to-VBAT Application
      1. 3.1.1 VBUS Short-to-VBAT Application
      2. 3.1.2 DP_IN/DM_IN Short-to-VBAT Application
      3. 3.1.3 VBUS/DP_IN/DM-IN Short-toVBAT Application Summary
    2. 3.2 Without External FET VOUT/DP_IN/DM-IN Short-to-VBAT Application
      1. 3.2.1 VOUT Short-to-VBAT Application
      2. 3.2.2 DP_IN/DM_IN Short-to-VBAT Application
      3. 3.2.3 VOUT /DP_IN/DM-IN Short-to-VBAT Application Summary
  7. 4Short-to-Battery Connect to TVS Application
    1. 4.1 VBUS Short-to-VBAT Connect to TVS Application
    2. 4.2 VOUT Short-to-VBAT Connect to TVS Application
    3. 4.3 DP/DM Short-to-VBAT Connect to TVS Application
    4. 4.4 CC1/CC2 Short-to-VBAT Connect to TVS Application
  8. 5Revision History

2.1.1 VBUS Short-to-VBAT Application

When the output VBUS is short circuited to VBAT, the VBAT voltage charges the output capacitor C4, and at the same time charges C3 through R3. When the voltage of BUS pin exceeds 7 V, the external FET is closed, and the LS_GD is set from high to low. Figure 2-4 shows the test results.

GUID-BCD6CC2A-C235-4B77-96DD-89FA36C34BE0-low.gifFigure 2-3 Power On VBUS Short-to-VBAT Test Setup
GUID-A15D9314-8A3D-4DE8-BBE1-3FF880AF473D-low.png
CH1 = 5 V/div, CH2 = 2 V/div, CH3 = 5 V/div, CH4 = 5 V/div, 20 µS/div
Figure 2-4 Power on VBUS Short-to-VBAT Test