Hi, how are you?
I have a question about the TPS7H4001-SP buck converter. In the first image, where you can see case 1, I use R1 and R2 to adjust the input voltage UVLO, and I need to control the enable with a single signal from an external chip, the ISL70321SEH. The chip has an open-drain output, and I have a pull-up resistor (Rpllup) to pull up the Enable1 signal. Enable1 will be the enable signal for the TPS7H4001.
The voltages of the single signal are 0V and 5V.
The questions here are:
1_Can I connect Enable1 to Enable?
2_Will the configured chip work properly with the calculated UVLO levels, using the equations and the external chip enable signal?
Here I have the case 2 where I don´t have R1 and R2 to control the UVLO levels.
the questions here are:
3_ Can I connect Enable 1 to Enable?
4_ What are the UVLO levels here?
5_ Is the enable threshold the same for case 1 and case 2?
Thanks for taking the time to read me.
I am waiting for your answers.