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MP6951
Fast Turn-Off Rectifier for Flyback Converter with Intelligent VDS Ringing Detection
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Description
The MP6951 is a secondary synchronous rectification driver using flip-chip assembly technology for high-frequency flyback converters. The device can support up to 1MHz flyback converters.
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Features & Benefits
- Supports Discontinuous Conduction Mode (DCM), Continuous Conduction Mode (CCM), Quasi-Resonant (QR), Zero Voltage Switching (ZVS), Active Clamp Flyback, and Hybrid Flyback (HFB)
- Up to 1MHz Switching Frequency (fSW)
- Wide Output Voltage (VOUT) Range Down to 0V
- No Need for Auxiliary Winding for High-Side or Low-Side Rectification
- VDS Ringing Detection Prevents False Trigger during DCM, QR, and ZVS Operation
- Works with Logic Level MOSFET (GaN and SiC)
- Fast Turn-Off and Turn-On Delay
- <300μA Quiescent Current (IQ)
- Supports High-Side and Low-Side Rectification
- Available in a TSOT23-6 Package
Active Part Numbers:
MP6951GJ-Z MP6951GJ-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MP6951 Resources
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ARTICLE
ADVANCING THE SYNCHRONOUS RECTIFIER FOR NEW FLYBACK CONVERTERSARTICLEFlyback topology has dominated low-power AC/DC applications for decades due to its simplicity and robustness across a wide operating range. In recent years, synchronous rectifiers (SRs) have replaced the conventional Schottky diode in flyback-based power supplies to significantly improve efficiency. As the demand for efficiency and power density increases year by year, flyback converters must con...
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APPLICATION
<120WAPPLICATIONAC/DC power supplies must deliver high-efficiency power conversion for a variety of consumer, industrial, and commercial applications. Power supplies under 120W require ultra-low standby power and high levels of integration to meet the various regulations and requirements of their many applications. Our broad portfolio of solutions includes PFC controllers, flyback controllers, and flyback synchr...
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PRODUCT CATEGORY
SYNCHRONOUS RECTIFIERS FLYBACK TOPOLOGYPRODUCT CATEGORY -
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MP6972PRODUCTCCM/DCM Flyback Ideal Diodewith Integrated100V/17mΩ MOSFETwith Slew Rate Detection
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MP6973PRODUCTCCM/DCM Flyback Ideal Diode with Integrated 100V/14mΩ MOSFET with Slew Rate Detection
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MP6908LPRODUCTFast Turn-Off Intelligent Rectifier with No Auxiliary Winding Requirement
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MP6919PRODUCTCCM/DCM Flyback Ideal Diode with Integrated 100V/13mΩ MOSFET and No Need for Auxiliary Winding
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MP9989PRODUCTCCM/DCM Flyback Ideal Diodewith Integrated 100V/10mΩ MOSFETand No Need for Auxiliary Winding
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MP6901PRODUCTHigh Noise Immunity, Fast Turn-off Intelligent Rectifier for Flyback
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MP6960PRODUCTFast Turn-off Intelligent Rectifier with CC/CV Controller
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MP6906PRODUCTFast Turn-Off Intelligent Rectifier with Very Low Voltage Forward Regulation
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MP6910APRODUCTCCM/DCM Flyback Ideal Diode with Integrated 100V/15mΩ MOSFET
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MP6902PRODUCTFast Turn-Off Intelligent Rectifier with Light-Load Management for Flyback
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MP6907PRODUCTFast Turn-off Flyback Synchronous Rectifier that Supports CCM, DCM and QR Operation Modes
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MP6902APRODUCTFast Turn-off Intelligent Rectifier MP6902 in a TSOT23-6 Package
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ARTICLE
HOW TO DESIGN AN ULTRA-WIDE INPUT VOLTAGE RANGE FLYBACKARTICLEIn modern technology, the flyback converter is one of the most widely used topologies for domestic and industrial applications that require an auxiliary power supply. Because flyback topology is so popular, designers often attempt to create a unified, single design for an ultra-wide input voltage (VIN) range. This type of design allows flybacks to be used to their maximum functionality while avoid...
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PRODUCT
MP6951APRODUCTFast Turn-Off Rectifier for Flyback Converter with Intelligent VDS Ringing Detection
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ARTICLE
DESIGNING A SYNCHRONOUS RECTIFICATION SOLUTION TO REDUCE EXCESSIVE HEAT (PART II)ARTICLEThis article is the second part of a two-part series exploring how to design a secondary-side synchronous rectifier for ultra-small, fast charge adapters. Part I discussed the topology designs and power supplies for synchronous rectifiers. Part II will review how a synchronous rectifier opens and shuts down, and how new devices utilize quick shutdown technology. A self-powered circuit provides ...
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ARTICLE
DESIGNING A SYNCHRONOUS RECTIFICATION SOLUTION TO REDUCE EXCESSIVE HEAT (PART I)ARTICLEMobile devices — such as mobile phones and laptops — are integral to the modern world. The development of mobile devices has accompanied a demand for small, lightweight, and fast-to-charge adapters. Major manufacturers are rushing to introduce ultra-small, fast charge adapters (see Figure 1). This article is the first part of a two-part series exploring how to design a secondary-side synchr...
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ARTICLE
HOW DOES FLYBACK SYNCHRONOUS RECTIFICATION AFFECT EMI?ARTICLEDue to the rapid development of mobile devices in the last decade, cell phone applications have expanded into every aspect of society. In day-to-day life, few people leave their cell phone, even for a few minutes. As a result, high battery capacity and fast charging speed has become one of the most critical features for cell phones, and the demand for adapters with higher power ratings and higher ...
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