Other Parts Discussed in Thread: UCC28C45
I am using the Flyback Controller UCC28C45-Q1 and want to improve accuracy with additional external Control Components.
Datasheet mentiones that the reference Voltage is trimmed to +/-1% accuracy.
Is the 2.5V reference for the error amplifier trimmed itself or is the 5V output reference trimmed and the 2.5V is a fixed 50% from the trimmed 5V?
In case of that: how much is the 2.5V reference for the error amplifier deviating from 50% of the trimmed 5V reference? (initial, drift?)
In case the 2.5V reference is a fixed 50% from the trimmed 5V then my goal is to can make the design much more accurate than 1% because then I can use a external control loop with theoretical exact 50% match of the 5V reference output. Is that possible?