Patent ID: 7624360

Claim:
A computer-implemented method, comprising: simulating, on a computer, a reference circuit design at a target crossover frequency, the reference circuit design representing a power supply circuit that includes a feedback stage to regulate an output of a power supply; determining, with the computer, an initial phase margin of the reference circuit design; adjusting, with the computer, a value of a gain limiter of the reference circuit design to limit a loop gain of the reference circuit design, wherein the gain limiter is a resistor and wherein adjusting the value of the gain limiter includes adjusting a value of the resistor and wherein an initial phase margin curve of the reference circuit design is substantially unaffected in response to adjusting the value of the gain limiter; and then adding, with the computer, an impedance network to the feedback stage in response to comparing the initial phase margin of the reference circuit design at the target crossover frequency with a threshold phase margin, the impedance network to increase the initial phase margin, wherein the impedance network is coupled in parallel with the gain limiter, and wherein adding the impedance network to the feedback stage further includes calculating a capacitance value of an impedance component of the impedance network in response to a value of the gain limiter.