Phase shift control method for boost converter and circuit...

Details Phase shift control method for boost converter and circuit... Phase shift control method for boost converter and circuit...

2009-01-21

2011-12-06

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

For phase shift or control

By splitting and combining

C323S272000

Reexamination Certificate

active

08072193

ABSTRACT:
A phase shift control method for a boost converter and circuit implementation comprises a master phase and at least one slave phase. A master-phase inductor current flowing through the master phase has a master-phase charge time interval and a master-phase discharge time interval; a slave-phase inductor current flowing through the slave phase has a slave-phase charge time interval and a slave-phase discharge time interval. The method comprises: calculating an ideal switching timing whereat the slave-phase inductor current descends to a zero-current judgment value; obtaining a physical switching timing whereat the slave-phase charge time interval starts; calculating a conduction timing error between the physical switching timing and the ideal switching timing; determining the time length of the slave-phase charge time interval in the same cycle according to the conduction timing error and the master-phase charge time interval.

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