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TPS4H000-Q1: CS output connected to MCU ADC R and C values

Part Number: TPS4H000-Q1

Hi Team,

In the application schematic in the datasheet, there is a resistor and capacitor connected to the CS pin, which connects to an MCU. 

The resistor and capacitor are not labeled and there are no recommended values. I would like to obtain the same square waveform as the diagram shown below, but the R and C values create a filter, which can then change the output to a sawtooth type waveform instead of a square wave. Which values of R and C were chosen in the diagram above to still allow the MCU to see the square wave as shown below for CS?

Thank you!

Jared

  • Hello Jared,

    the RC is only HF filter. I see the pulse width is around 2mS. You can use 10K and 1nF so the time constant is 10uS. This time constant is very small compared to the pulse width and the MCU still see square wave.

    Regards, Mahmoud

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