Patent ID: 6246222
Filing Date: 2001-06-12
Classification: H02M

Abstract:
A DC-to-DC converter having an output node at which the converter asserts an output potential, said converter comprising:a switching controller having N control signal channels, where N is an integer greater than one, and multiple trigger signal channels, wherein each of the control signal channels is configured to generate a different one of N pulse width modulated switch control signals, and each of the trigger signal channels is configured to generate a different one of a set of trains of trigger signals in response to comparison of a ramped voltage with a feedback signal indicative of the output potential; anda set of N power delivery channels coupled to the output node, each of the power delivery channels including a power switch coupled to the controller to receive a different one of the switch control signals,wherein the controller includes rotation circuitry coupled to the trigger signal channels and the control signal channels and configured to rotate the trigger signal channels relative to the control signal channels to cause the controller to generate the switch control signals in response to a sequence of trigger channel states, wherein each of the trigger channel states is determined by a mapping each of the control signal channels to a different one of the trigger signal channels.