Patent ID: 8773097
Filing Date: 2014-07-08
Classification: H02M

Abstract:
1. A digital control circuit for use with a switch-mode power converter that receives an input signal at a first input node and a control signal at a second input node, and that provides an output signal at a first output node and a current signal at a second output node, the digital control circuit comprising: the first input node coupled to receive the output signal at the first output node of the switch-mode power converter; the second input node coupled to receive the current signal at the second output node of the switch-mode power converter; and an output node coupled to provide the control signal at the second input node of the switch-mode power converter, wherein the digital control circuit: (a) generates a programmable current reference signal based on a difference between the output signal and a voltage reference signal; (b) mathematically predicts, utilizing a prediction algorithm, a time instant in the future when the peak current signal substantially equals the programmable reference current signal; and (c) generates the control signal based on the mathematically computed time instant.