Overcurrent Protection

[winnie_zhan]

Hello, I want to use the analog comparator (ACMP) function of XMC1300_PG_PSSOP_28 to realize the overcurrent protection function. I hope that the current range can be controlled by programming; I would like to ask whether XMC1300_PG_PSSOP_28 can realize the programmable current range;

[Vasanth · Accepted solution]

Hi,

By programming I am assuming you want to change the reference with the requirement. There is an option which could be helpful.

A resistor chain (in the order of 500kOhm) divides the reference voltage value from ACMP.REF input if bit ANACMP1.REF_DIV_EN is set. According to Figure  the divided voltage is delivered to pin ACMP1.INP.

This is the programmability of the reference connected to ACMP. 

Best Regards,
Vasanth