Stepping Inductor For Fast Transient Response Of Switching Converter
A Fast Transient Response Converter Is Disclosed Which Makes Use Of Stepping Inductor In A Switching Converter To Speed Up Output Voltage Response Under Fast Transient Condition. The Inductive Element In A Switching Converter Is Replaced By Two Series Or Parallel Inductive Elements, One Of Which Has A Smaller Value Of Inductance Than The Other. During The Fast Transient Period, The Inductor With Larger Inductance Value Will Be Shorted To A Voltage Source. The Total Inductance Will Be Greatly Reduced And Thus Allows Rapid Current Change During The Transient Change.
Patent Number: US6815937B2
Application Number: US2002279521A
Inventor: Poon, Franki Ngai Kit | Pong, Man Hay | Liu, Joe Chui Pong
Priority Date: 24 Oct 2002
Priority Number: US6815937B2
Application Date: 24 Oct 2002
Publication Date: 9 Nov 2004
IPC Current: H02M0003158 | H02M000115
US Class: 323282
Assignee Applicant: The University of Hong Kong
Title: Stepping inductor for fast transient response of switching converter
Usefulness: Stepping inductor for fast transient response of switching converter
Summary: E.g. buck converter, boost converter, flyback converter, forward converter, push-pull converter, resonant converter, full bridge converter, Cuk converter, Sepic converter and half bridge converter used for computer application.
Novelty: Power converter e.g. buck converter for computer application, detects output voltage and accordingly operates MOSFETs to couple transformer winding to low impedance element during transient decrease in output power
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