TECHNIQUES FOR CONTROLLING A POWER CONVERTER USING MULTIPLE CONTROLLERS

摘要

A power converter controller includes a primary controller that is galvanically isolated from a secondary controller. The primary controller controls a state of a power switch during a first mode of operation according to a switching pattern defined by the primary controller. During a second mode of operation, the primary controller controls the state of the power switch in response to control signals received via a communication link. The secondary controller operates in a powered down state during the first mode of operation. The secondary controller initiates a transition operation with the primary controller that transitions the primary controller and the secondary controller from the first mode of operation to the second mode of operation. In the second mode of operation, the secondary controller transmit the control signals to the primary controller via the communication link.

主权项

1. A power converter controller comprising:
a primary controller to be coupled to a power switch of a power converter, wherein the primary controller is coupled to control a state of the power switch during a first mode of operation according to a primary switching pattern defined by the primary controller, and wherein the primary controller is coupled to control the state of the power switch in response to control signals received via a communication link during a second mode of operation; and a secondary controller that is galvanically isolated from the primary controller, wherein the secondary controller is coupled to initiate a transition operation with the primary controller during the first mode of operation, wherein the transition operation transitions the primary controller and the secondary controller from the first mode of operation to the second mode of operation, and wherein the secondary controller is coupled to transmit the control signals to the primary controller via the communication link during the second mode of operation.