TW201130213A - Power converter, controller for controlling a transformer and method thereof - Google Patents

Power converter, controller for controlling a transformer and method thereof

Info

Publication number
TW201130213A
TW201130213A TW99105546A TW99105546A TW201130213A TW 201130213 A TW201130213 A TW 201130213A TW 99105546 A TW99105546 A TW 99105546A TW 99105546 A TW99105546 A TW 99105546A TW 201130213 A TW201130213 A TW 201130213A
Authority
TW
Taiwan
Prior art keywords
period
transformer
power converter
discharging
controller
Prior art date
Application number
TW99105546A
Other languages
Chinese (zh)
Other versions
TWI399910B (en
Inventor
zhi-mou Ren
Jun Ren
Yun-Ning Xie
Original Assignee
O2Micro Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by O2Micro Inc filed Critical O2Micro Inc
Priority to TW99105546A priority Critical patent/TWI399910B/en
Publication of TW201130213A publication Critical patent/TW201130213A/en
Application granted granted Critical
Publication of TWI399910B publication Critical patent/TWI399910B/en

Links

Abstract

A power converter includes a transformer operated in multiple switching cycles. At least one switching cycle includes a charging period, a discharging period, and an adjusting period. The transformer has a primary winding coupled to a power source and a secondary winding coupled to a load. During the charging period the transformer is powered by the power source and a current flowing through the primary winding increases. During the discharging period the transformer discharges to power the load and a current flowing through the secondary winding decreases. A ratio of duration of the discharging period to a total duration of the charging period, the discharging period and the adjusting period is constant.
TW99105546A 2010-02-26 2010-02-26 Power converter, controller for controlling a transformer and method thereof TWI399910B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW99105546A TWI399910B (en) 2010-02-26 2010-02-26 Power converter, controller for controlling a transformer and method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW99105546A TWI399910B (en) 2010-02-26 2010-02-26 Power converter, controller for controlling a transformer and method thereof

Publications (2)

Publication Number Publication Date
TW201130213A true TW201130213A (en) 2011-09-01
TWI399910B TWI399910B (en) 2013-06-21

Family

ID=49030134

Family Applications (1)

Application Number Title Priority Date Filing Date
TW99105546A TWI399910B (en) 2010-02-26 2010-02-26 Power converter, controller for controlling a transformer and method thereof

Country Status (1)

Country Link
TW (1) TWI399910B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI505611B (en) * 2012-02-21 2015-10-21 O2Micro Int Ltd Controller, power converter for controlling transformer, and load driving circuit thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7394209B2 (en) * 2004-02-11 2008-07-01 02 Micro International Limited Liquid crystal display system with lamp feedback
US8045344B2 (en) * 2007-04-23 2011-10-25 Active-Semi, Inc. Regulating output current from a primary side power converter by clamping an error signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI505611B (en) * 2012-02-21 2015-10-21 O2Micro Int Ltd Controller, power converter for controlling transformer, and load driving circuit thereof

Also Published As

Publication number Publication date
TWI399910B (en) 2013-06-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees