MP6951A中文资料Fast Turn-Off Rectifier for Flyback Converter with Intelligent VDS Ringing Detection数据手册MPS规格书

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.

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.

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.

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)
• Supports 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 Triggers during DCM, QR, and ZVS Operation
• Works with Logic-Level MOSFET
• Fast Turn-Off and Turn-On Delay
• <300μA Quiescent Current (IQ)
• Supports High-Side and Low-Side Rectification
• Available in a TSOT23-6 Package