CPC H03F 1/0288 (2013.01) [H03F 1/3229 (2013.01); H03F 1/3288 (2013.01); H03F 3/45636 (2013.01)] | 21 Claims |
1. A compensated amplifier for use in a power converter controller, comprising:
a first amplifier coupled to receive a sensed signal and a reference signal and configured to generate a first error signal in response to the sensed signal and the reference signal;
a second amplifier coupled to the first amplifier and configured to generate a second error signal in response to the sensed signal and the reference signal;
an integrator coupled to the first amplifier and configured to generate an integrated error signal in response to the first error signal; and
an arithmetic operator coupled to the second amplifier, wherein the arithmetic operator is configured to generate a control signal in response to the integrated error signal and the second error signal,
wherein the first amplifier comprises a first transconductance amplifier, and
wherein the second amplifier comprises a differential amplifier, wherein the integrator comprises a capacitor coupled between an output of the first amplifier and an output of the second amplifier, and wherein the compensated amplifier further comprises a resistor coupled between the output of the first amplifier and a return.
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