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MSPM0G1507: Comparator DAC Settings

Part Number: MSPM0G1507

Hello,

My customer is working with the COMP1 and associated DAC for a reference voltage to control a P-Channel FET as a switching power supply. See the setup below:

image.png

 

As opposed to seeing the graph's voltage output, where the Vout reaches the DACCODE0 voltage, then returns to DACCODE1, which is set to 0V, the voltage oscillates around DACCODE0 and does not drop significantly below the DACCODE0 voltage:

image.png

The register configuration at runtime is below. Any feedback?

image.png

Best,

Ryan