TPS7H2140-SEP: TPS7H2140-SEP Evaluation Module (EVM)

Part Number: TPS7H2140-SEP

Tool/software:

Dear Sir.

I try to check the output control at the TPS7H2140-SEP EVB.

Test Conditions.

1. Input: 28VDC to J1

2. EN1: High (V_IO = 5V), EN2 = GND, EN3 = GND, EN4 = GND.

3. OUT1 ~ OUT4 to connect 10kohm load conncet to GND

4. THER = GND, DIAG_EN = GND, SEH = GND, SEL = GND

5. CL = 1.5k, J11 = Open

The OUT1 = 0V when I turn on the power(28V Input).

What's the problem?

The OUT1~OUT4 go to 28V when I change the EN1: High , EN2 = GND, EN3 = GND, EN4 = High.

I don't understand this sequence.

I think the OUT1~OUT4 are controlled with EN1~EN4 individually.

Is there any wrong setting?

Please help me.