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

3.1.1 VBUS Short-to-VBAT Application

Application 1: Figure 3-1 shows the test setup. The state at each point is power supply off (VBUS = 0 V, LS_GD is low, and Q1 is off). Short VBUS to VBAT. The voltage of VBUS rushes to the same height as VBAT. Figure 3-4 shows the test results.

Application 2: Figure 3-2 shows the test setup. VBUS shorts to VBAT. The input voltage and VBUS are rushed to the same height as VBAT together. Figure 3-5 shows the test results.

Application 3: Figure 3-3 shows the test setup. First, short VBUS to VBAT and power on the power supply, then enable EN. Figure 3-6 shows the test results.

GUID-379D1518-C8FA-4E07-BBBA-7FA5147AE5B7-low.png
CH1 = 5 V/div, CH2 = 2 V/div, CH3 = 5 V/div, CH4 = 5 V/div, 20 µS/div
Figure 3-4 Power Off VBUS Short-to-VBAT Test
GUID-F832BA91-8F5F-4A23-9466-C47C767A066A-low.png
CH1 = 5 V/div, CH2= 2 V/div, CH3 = 5 V/div, CH4 = 5 V/div, 10 mS/div
Figure 3-5 VBUS Short to VBAT, then Power On Test
GUID-6245FB2E-13E0-4D46-A679-0C64895F2576-low.png
CH1 = 5 V/div, CH2 = 2 V/div, CH3 = 5 V/div, CH4 = 2 V/div, 400 mS/div
Figure 3-6 VBUS Short to VBAT and Power On, then Enable On Test