Family Of Zero Voltage Switching Dc To Dc Converters With Coupled Output Inductor
A Family Of Power Converter Is Invented. Each Of These Converter Accomplishes Zero Voltage Switching To Minimize Switching Losses. Also By The Application Of Coupled Inductor, Conduction Losses Can Also Be Minimized. The Basic Embodiment Comprises Of Two Switches Connected Across The Input Source. The Switches Are Driven By Asymmetrical Driving Pulses With Variable Duty Cycle. A Capacitor Is Connected To The Node Joining The Two Switches And An Inductor Is In Turn Connected To It. This Inductor Is Connected To An Output Filter Through A Diode. The Output Filter Comprises Of An Inductor And Capacitor And Diode Combinations. This Output Filter Inductor Has Two Coupled Windings Which Minimize Conduction Losses. The Basic Embodiment Can Be Modified To Provide Converter With Boost Output Or Negative Output. The Embodiment Can Also Be Modified For Isolated Converter With Transformer In Both Half Bridge And Full Bridge Circuit.
Patent Number: US5748457A
Application Number: US1997787295A
Inventor: Poon, Franki Ngai Kit | Pong, Man Hay
Priority Date: 24 Jan 1997
Priority Number: US5748457A
Application Date: 24 Jan 1997
Publication Date: 5 May 1998
IPC Current: H02M0003158 | H02M0003335 | H02M0003337
US Class: 363016 | 363131
Title: Family of zero voltage switching DC to DC converters
Usefulness: Family of zero voltage switching DC to DC converters
Novelty: DC-DC power converter with zero voltage switching function has controller that activates first and second diodes selectively so that they operate in synchronisation with first and second FETs respectively
Electronics
Circuit Design
Hong Kong
