Half bridge apparatus and half bridge control method

摘要

A half bridge method and apparatus that provides a desired output using pulse width modulation and the predicted condition of a power supply is disclosed. The power supply is operatively connected to a first one the switch drivers of the switching elements of the half bridge. The condition of the power supply is predicted using of a model of power supply operating parameters. This model is used in conjunction with a signal applied to a second one of the switch drivers of the switching elements of the half bridge to determine whether an operating criterion for the power supply is satisfied. If the condition is satisfied then a signal to the first one of the switch drivers is enabled.

主权项

1. A half bridge network adapted to be operably coupled to and responsive to respective control signals provided by a Pulse Width Modulation (PWM) controller, said half bridge network comprising:
a high-side switch and a low-side switch coupled to the high side and the low side output of the half bridge, respectively; switch-driving circuits operably coupled to the high-side switch and to the low-side switch in one-to-one correspondence, said switch-driving circuits driving the respective switches in response to the respective control signals provided to the switch-driving circuits; a power supply circuit operatively connected to a first switch-driving circuit; a power supply circuit condition control circuit responsive to a model of the power supply circuit and to at least the control signal provided to a second switch-driving circuit, said power supply circuit condition control circuit controlling the application of the respective control signal to the first switch-driving circuit.