Patent ID: 7541795

Claim:
A switching regulator controller, comprising: a soft-start reference circuit that is operable to provide a reference voltage such that, at least during a soft start, the reference voltage is attenuated, and such that the reference voltage attenuation decreases during the soft start; and a switch control circuit that is operable to provide a switch control signal such that: during a steady state condition, a frequency of the switch control signal is approximately constant; and at least during the soft start, the switch control circuit attenuates the frequency of the switch control signal based on the reference voltage attenuation, wherein the switch control circuit is arranged to control the conversion of an input voltage into an output voltage such that the output voltage is regulated, and wherein the switch control circuit is arranged to provide the switch control signal such that, during the steady state condition, the frequency of the switch control signal is maintained substantially constant such that the switch control signal is substantially independent of the ratio of the output voltage to the input voltage.