Hi everyone,
I'm simulating an amplifier with TPC and TMC compensation techniques, but I'm having some problems, with TPC I've gain peakings both in open and closed loop response. Using TMC the phase has a strange behaviour, and the THD increases with the input voltage. I'm splitting the CMiller capacitor into two 68 pF capacitors (CMiller for conventional compensation is 33pF), I know that this couldn't be a good strategy, but I think that's a good start, my problem is getting different values for the capacitors and the values for the resistors. There's any formula?
Or any way for calculating the resistor?
LTSpice circuits attached,
Best regards,
Daniel Almeida
I'm simulating an amplifier with TPC and TMC compensation techniques, but I'm having some problems, with TPC I've gain peakings both in open and closed loop response. Using TMC the phase has a strange behaviour, and the THD increases with the input voltage. I'm splitting the CMiller capacitor into two 68 pF capacitors (CMiller for conventional compensation is 33pF), I know that this couldn't be a good strategy, but I think that's a good start, my problem is getting different values for the capacitors and the values for the resistors. There's any formula?
Or any way for calculating the resistor?
LTSpice circuits attached,
Best regards,
Daniel Almeida