MP6951GJ-Z

MP6951GJ-Z 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. The forward drop of the external synchronous rectifier (SR) MOSFET is regulated to about 40mV. The MP6951 switches the SR MOSFET off as soon as the voltage becomes negative. It 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. Application includes USB PD and quick chargers, adapters, general flyback power supplies.

• 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 trigger during DCM, QR, and ZVS operations
• Works with logic level MOSFET (GaN and SiC)
• Fast turn-off and turn-on delay
• Supports high-side and low-side rectification
• 0.5ohm pull-down impedance typical (ILOAD = 10mA, TJ = -40°C to +125°C)
• <lt/>300μA quiescent current (IQ)
• TSOT23-6 package, junction temperature is 150°C

Notes

MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.