TIDT380 February   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Dimensions
  6. 2Testing and Results
    1. 2.1 Thermal Images
    2. 2.2 Bode Plots
  7. 3Waveforms
    1. 3.1 Cold Crank
    2. 3.2 Start-up
    3. 3.3 Steady State
    4. 3.4 Short-Circuit Protection
    5. 3.5 Load Transients

Short-Circuit Protection

Short-circuit protection waveforms of LM74900-Q1 are shown in the following figure.

GUID-20231228-SS0I-G3BM-ZL48-ZBHMM5XZKJRW-low.png Figure 3-35 Short-Circuit Protection at 4.2 VIN

Short-circuit protection waveforms of LMQ644A2-Q1 are shown in the following figures.

GUID-20231228-SS0I-TMS7-XBFG-7KFMXZC7H1ND-low.png Figure 3-36 Short-Circuit Protection at 8.5 VIN, 3.3 VOUT
GUID-20231228-SS0I-C7LJ-TQXT-QXD5LM4CKL7W-low.png Figure 3-37 Short-Circuit Protection at 13.5 VIN, 3.3 VOUT
GUID-20231228-SS0I-LKQD-GBZV-WJNX7FGXN7N2-low.png Figure 3-38 Short-Circuit Protection at 18 VIN, 3.3 VOUT
GUID-20231228-SS0I-HH50-CVQR-GC3Z3H88Q8TP-low.png Figure 3-39 Short-Circuit Protection at 8.5 VIN, 6 VOUT
GUID-20231228-SS0I-TT6T-8ZWJ-XFFVSW6V02Q4-low.png Figure 3-40 Short-Circuit Protection at 13.5 VIN, 6 VOUT
GUID-20231228-SS0I-B0GT-BHPJ-S0PBBHDPQ1VT-low.png Figure 3-41 Short-Circuit Protection at 18 VIN, 6 VOUT

Short-circuit protection waveforms of TPS745-Q1 are shown in the following figure.

GUID-20231228-SS0I-J7GF-P2HS-JRMB5DVKQNTR-low.png Figure 3-42 Short-Circuit Protection at 3.3 VIN, 1.8 VOUT

Short-circuit protection waveforms of TPS7B81-Q1 are shown in the following figures.

GUID-20231228-SS0I-FNXT-1TKD-NWTWD3JW1LTC-low.png Figure 3-43 Short-Circuit Protection at 8.5 VIN, 3.3 VOUT
GUID-20231228-SS0I-F1KR-XX82-VJ06CJFCN67H-low.png Figure 3-44 Short-Circuit Protection at 13.5 VIN, 3.3 VOUT
GUID-20231228-SS0I-GP6G-06TG-QMHT3RF9PVLZ-low.png Figure 3-45 Short-Circuit Protection at 18 VIN, 3.3 VOUT

Short-circuit protection waveforms of TPS628503-Q1 are shown in the following figure.

GUID-20231228-SS0I-J7GF-P2HS-JRMB5DVKQNTR-low.png Figure 3-46 Short-Circuit Protection at 3.3 VIN, 1.15 VOUT