Article Details

ID: 2449
Case Type: faq
Category: PAC-Designer
Related To: TRIM Usage
Family: Power Manager II

Search Answer Database

Search Text Image

During Trim configuration in PAC-Designer, I receive an error when calculating DAC settings for my target profiles. What can cause this?

The Trim calculation references settings which can be configured in the Trim Configuration Options menu. In some cases you can fix the errors by increasing the "Maximum Supply Adjustment Range" from the default value of 5%. 

In other cases, the voltage difference between the profiles cannot be achieved within the Trim output range - this is dependent on the individual DC-DC converter architecture. The Trim DAC used in the Power Manager II is capable of supplying +/- 200 uA in current, with a voltage range of +/- 320 mV from its Bipolar zero output voltage. You might need to reduce the voltage difference between profiles in order to calculate a working configuration for all four profiles.