EVM Test Setup
9
SLUUC03 – February 2019
Copyright © 2019, Texas Instruments Incorporated
TPS566235EVM-036 evaluation module
5.2
Start-up Procedure
Start-up with dedicated enable signal:
1. Select operation mode at J3.
2. Apply 4.5-V~18-V power supply to J1.
3. Apply 1.6-V~5.5-V enable signal to JP1 middle pin (EN pin).
4. Apply load to J2 output connector.
5. Check the V
OUT
.
Start-up with VIN control enable signal:
1. Select operation mode at J3.
2. Connect JP1-1 pin to JP1-2 pin with jumper cap.
3. Apply 4.5-V - 18-V power supply to J1.
4. Apply load to J2 output connector.
5. Check the V
OUT
.
6
Test Waveforms
6.1
Power up
shows the power up waveform at 12-V input and 1.05-V output. Once the EN signal is high, V
OUT
starts to ramp up.
Figure 9. Power up with 6 A loading controlled by EN pin
6.2
Power down
shows the power down waveform at 12-V input and 1.05-V output. Once the EN signal is low,
V
OUT
starts to ramp down.
