TIDT391 April   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
    4. 1.4 Test Setup
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  7. 3Waveforms
    1. 3.1 Start-Up Sequence
    2. 3.2 Switching
    3. 3.3 Short-Circuit Protection

3.1 Start-Up Sequence

Figure 3-20 through Figure 3-4 show the charging waveform with input source voltage, battery voltage, and charge current in start-up and steady state.

GUID-20240407-SS0I-9PQN-W6TS-RWMGLJGMSRQK-low.pngFigure 3-1 20V, 3A Input Source to 7S Battery 30V, 900mA Charge
GUID-20240407-SS0I-K0NZ-W5GN-QQH7KVCM1BXS-low.pngFigure 3-3 Input Source Voltage Transition Down From 20V to 15V, 9V Charge 7S Battery 30V, 900mA
GUID-20240407-SS0I-V9MG-B6BR-NBG9R49KNMQP-low.pngFigure 3-2 Input Source Voltage Transition up From 5V to 9V, 15V, 20V USB PD Source Charge 7S Battery 30V, 900mA
GUID-20240407-SS0I-HQ45-LXXR-XK6DNWTLRKK6-low.pngFigure 3-4 5V, 2A Non-USB PD Input Source Charge 7S Battery 30V, Input Voltage Dynamic Power Management Works, Charge Current Reduced to 300mA