Invention Grant
- Patent Title: Pre-biased circuit for synchronous rectified power converters
- Patent Title (中): 同步整流电源转换器预偏置电路
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Application No.: US12094840Application Date: 2006-07-06
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Publication No.: US07884585B2Publication Date: 2011-02-08
- Inventor: Mikael Appelberg
- Applicant: Mikael Appelberg
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee Address: SE Stockholm
- Priority: SE0502613 20051123
- International Application: PCT/SE2006/050247 WO 20060706
- International Announcement: WO2007/061369 WO 20070531
- Main IPC: G05F1/10
- IPC: G05F1/10 ; G05F1/12 ; H02M5/42
Abstract:
The present invention relates to voltage converters and especially to a control circuit with an input from the voltage converter output and arranged to control the voltage level on the voltage converter output. The problem addressed relates to the situation when there is a pre-bias voltage on the converter output at the moment it is switched on. The object of the control circuit is to increase the voltage on the converter output fast and avoiding any drain of voltage or current from the output at the start up sequence. This is performed by a comparator in the control circuit that is arranged to compare the reference voltage with a division of the output voltage and if the reference voltage is lower that the divided output voltage the reference voltage is increased at the comparator output. The comparator circuit includes an OP-amplifier.
Public/Granted literature
- US20100060253A1 Pre-Biased Circuit for Synchronous Rectified Power Converters Public/Granted day:2010-03-11
Information query
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