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LM25115

National Semiconductor
Part Number LM25115
Manufacturer National Semiconductor
Description Secondary Side Post Regulator Controller
Published Nov 22, 2006
Detailed Description www.DataSheet4U.com LM25115 Secondary Side Post Regulator Controller November 2005 LM25115 Secondary Side Post Regula...
Datasheet PDF File LM25115 PDF File

LM25115
LM25115

Overview
www.
DataSheet4U.
com LM25115 Secondary Side Post Regulator Controller November 2005 LM25115 Secondary Side Post Regulator Controller General Description The LM25115 controller contains all of the features necessary to implement multiple output power converters utilizing the Secondary Side Post Regulation (SSPR) technique.
The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter.
Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation (PWM) of the main channel duty cycle.
Leading edge modulation is compatible with either current mode or voltage mode control of the main output.
The LM25115 drives external high side and low side NMOS power switches configured as a synchronous buck regulator.
A current sense amplifier provides overload protection and operates over a wide common mode input range.
Additional features include a low dropout (LDO) bias regu...


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