描述 Description

The MP6951A is a secondary synchronous rectification driver that uses flip-chip assembly technology for high-frequency flyback converters. The device can support up to 1MHz flyback converters.\r
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The forward drop of the external synchronous rectifier (SR) MOSFET is regulated to about 30mV. The MP6951A switches the SR MOSFET off as soon as the voltage becomes negative.\r
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The MP6951A uses intelligent VDS ringing detection technology. This helps prevent the MOSFETs’ gate driver from being falsely triggered due to VDS oscillations during discontinuous conduction mode (DCM) and quasi-resonant (QR) operation.\r
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The MP6951A is available in a space-saving TSOT23-6 package.

特性 Features

? Supports Discontinuous Conduction Mode (DCM), Continuous Conduction Mode (CCM), Quasi-Resonant (QR), Zero-Voltage Switching (ZVS), Active Clamp Flyback and Hybrid Flyback (HFB)\r
? Supports Up to 1MHz Switching Frequency (fSW)\r
? Wide Output Voltage (VOUT) Range Down to 0V\r
? No Need for Auxiliary Winding for High-Side or Low-Side Rectification\r
? VDS Ringing Detection Prevents False Triggers during DCM, QR, and ZVS Operation\r
? Works with Logic-Level MOSFET\r
? Fast Turn-Off and Turn-On Delay\r
? <300μA Quiescent Current (IQ)\r
? Supports High-Side and Low-Side Rectification\r
? Available in a TSOT23-6 Package