Patent ID: 8253400

Claim:
A circuit, comprising: an output sensing module, configured to be communicatively coupled with a switching power converter, and operable to generate an output sense signal as a function of a load output, wherein: the switching power converter includes a low-side switching module coupled with a bus voltage through a magnetic element and a load and configured to store energy in the magnetic element when the low-side switching module is in an on state, and is operable to receive a converter driver signal having a duty cycle and switch the bus voltage as a function of the converter driver signal to generate the load output as a function of the duty cycle; and the output sense signal has a period, including: a first portion of the period, during which the low-side switching module is in the on state and the output sense signal substantially correlates with the load output; and a second portion of the period, during which the output sense signal substantially does not correlate with the load output; and a sampling module, communicatively coupled with the output sensing module, and operable to sample the output sense signal during the first portion of the period to generate an output sense level that is functionally related to the load output.