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LM25115A Datasheet

Part Number LM25115A
Manufacturers Texas Instruments
Logo Texas Instruments
Description Secondary Side Post Regulator/DC-DC Converter
Datasheet LM25115A DatasheetLM25115A Datasheet (PDF)

LM25115A www.ti.com SNVS501B – FEBRUARY 2007 – REVISED APRIL 2013 LM25115A Secondary Side Post Regulator/DC-DC Converter with Power-Up/Power-Down Tracking Check for Samples: LM25115A FEATURES 1 •2 Power-up/Power-down Tracking • Self-synchronization to Main Channel Output • Leading Edge Pulse Width Modulation • Valley Current Mode Control • Standalone DC/DC Synchronous Buck Mode • Operates from AC or DC Input up to 42V • Wide 4.5V to 30V Bias Supply Range • Wide 0.75V to 13.5V Output Range. •.

  LM25115A   LM25115A






Part Number LM25115
Manufacturers Texas Instruments
Logo Texas Instruments
Description Secondary Side Post Regulator Controller
Datasheet LM25115A DatasheetLM25115 Datasheet (PDF)

LM25115 www.ti.com SNVS418A – NOVEMBER 2005 – REVISED APRIL 2013 LM25115 Secondary Side Post Regulator Controller Check for Samples: LM25115 FEATURES 1 •2 Self-synchronization to Main Channel Output • Free-run Mode for Buck Regulation of DC Input • Leading Edge Pulse Width Modulation • Voltage-mode Control with Current Injection and Input Line Feed-forward • Operates from AC or DC Input up to 42V • Wide 4.5V to 30V Bias Supply Range • Wide 0.75V to 13.5V Output Range. • Top and Bottom Gate D.

  LM25115A   LM25115A







Part Number LM25115
Manufacturers National Semiconductor
Logo National Semiconductor
Description Secondary Side Post Regulator Controller
Datasheet LM25115A DatasheetLM25115 Datasheet (PDF)

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 th.

  LM25115A   LM25115A







Secondary Side Post Regulator/DC-DC Converter

LM25115A www.ti.com SNVS501B – FEBRUARY 2007 – REVISED APRIL 2013 LM25115A Secondary Side Post Regulator/DC-DC Converter with Power-Up/Power-Down Tracking Check for Samples: LM25115A FEATURES 1 •2 Power-up/Power-down Tracking • Self-synchronization to Main Channel Output • Leading Edge Pulse Width Modulation • Valley Current Mode Control • Standalone DC/DC Synchronous Buck Mode • Operates from AC or DC Input up to 42V • Wide 4.5V to 30V Bias Supply Range • Wide 0.75V to 13.5V Output Range. • Top and Bottom Gate Drivers Sink 2.5A Peak • Adaptive Gate Driver Dead-time Control • Wide Bandwidth Error Amplifier (4MHz) • Programmable Soft-start • Thermal Shutdown Protection • TSSOP-16 package DESCRIPTION The LM25115A controller contains all of the features necessary to produce multiple tracking outputs using 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. LM25115A can be also used as a standalone DC/DC synchronous buck controller (Refer to Standalone DC/DC Synchronous Buck Mode section). 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 LM25115A drives external high-side and low-side NMOS power switches configured as a synchron.


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