MP6923 8-24V Fast Turn-Off Synchronous Rectifier SOIC14

MP6923 8-24V Fast Turn-Off Synchronous Rectifier SOIC14

The MP6923 is a dual, fast turn-off, intelligent rectifier for synchronous rectification in LLC resonant converters.

Key Specifications

Features

• Works with Both Standard and Logic-Level MOSFETs
• Compatible with Energy Star's 0.5W Standby Requirements
• VDD Range from 8V to 24V
• 15mV VDS Regulation Function (1)
• Fast Turn-Off: Total Delay of 20ns
• Anti-Bounce Logic(1)
• Maximum Switching Frequency of 300kHz
• Light-Load Mode Function(1) with <600μA of Quiescent Current
• Supports CCM, CrCM, and DCM Operation
• Available in a SOIC14 Package

Typical Application Circuit

Applications

• AC/DC Adapters
• LCDs and PDP TVs

Design Notes

• The PFC inductor must support the maximum duty cycle at the lowest line voltage, which is where saturation risk peaks.
• High-voltage startup and X-capacitor discharge paths dominate no-load standby loss; verify them against the efficiency target.
• Leakage inductance and the RCD clamp set the turn-off loss — snubber values are a thermal trade-off, not a fixed recipe.
• Synchronous rectification timing must track the primary switching; a mistimed SR FET conducts through its body diode and fails hot.

Common Questions