TPS4H160 & 2H160 question

Sherry,

Thanks for reaching out on E2E!

I am unable to read your waveform. Could you send a better resolution image?

Thanks,

Elizabeth

Hi Elizabeth,

1. According to the test, the TPS4H160'S CS(H) voltage is 2.5V, while the 2H160 CS (H) voltage is 2.27V, why are they different? Can I set this value using software? If we are designing a voltage divider to meet the specifications of the AD input, is it necessary to design at the maximum CS(H)?

2. In our tests, we found that 0mA of the load current  also triggers FAULT when it is turned on. How should we eliminate this problem?

CH1: IN1        CH2: Fault interrupt output        CH3: CURRENT      CH4: AD output voltage

Thanks & Best Regards,

Sherry

Dear team,

Maybe my description is not clear.

1. Below is the TPS2H160's schematic(it is not completed, for example the customer adds the pull up resistor at the fault pin, but in this schematic it doesn't show this. But the information related question is clear). The VS=7V, the current limit is 350mA. But when I set the load current is 1A(the second picture), the CS(H) value is only 2.3V while the normal range should be 4.5-6.5V in fault mode. Could you please help answer this question?

Thanks & Best Regards,

Sherry