Current Driven Synchronous Rectifier With Energy Recovery Using Hysterisis Driver
A Synchronous Rectifier Using Current Driven Approach Is Disclosed Which Can Replace Diode Rectifier In Most Of The Power Converter Topologies To Enable Low Rectification Loss. The Present Invention Comprises A Low Loss Switch And Essentially A Transformer With At Lease One Current Sensing Winding, Windings For Current Sense Energy Recovery And One Driving Winding Connected To A Hysterisis Driver Which Provides Driving Signal And Power For The Synchronous Rectifier. A Hystersis Driver Is Introduced Which Can Reduce The Noise Interference To The Driving Signal, Increase The Operating Frequency Range, Eliminate The Saturation Problem Of The Current Sensing Transformer And Hence Provide More Flexibility To The Transformer Design. This Synchronous Rectifier Is Self-Driven And The Driving Signal Is Independent Of The Input Voltage Of The Converter Which Enhances Its Application To Wide Input Range Converter. Current Sense Energy Recovery Enables Power Converters To Operate At High Efficiency And High Frequency.
Patent Number: US6597587B1
Application Number: US2002115492A
Inventor: Poon, Frankie Ngai Kit | Liu, Joe Chui Pong | Pong, Man Hay
Priority Date: 2 Apr 2002
Priority Number: US6597587B1
Application Date: 2 Apr 2002
Publication Date: 22 Jul 2003
IPC Current: H02M0003335
US Class: 36302106 | 36302114 | 363125 | 363127
Assignee Applicant: The University of Hong Kong
Title: Current driven synchronous rectifier with energy recovery using hysterisis driver
Usefulness: Current driven synchronous rectifier with energy recovery using hysterisis driver
Novelty: Synchronous rectifier for power converter, has hysteresis buffer that controls ON and OFF states of MOSFET based on comparing received input voltage signal with preset voltages
電子
電路設計
香港
