Diodes Incorporated
SO 8

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Synchronous Controller

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The ZXGD3104 is intended to drive MOSFETS configured as ideal diode replacements. The device is comprised of a differential amplifier detector stage and high current driver. The detector monitors the reverse voltage of the MOSFET such that if body diode conduction occurs a positive voltage is applied to the MOSFET’s Gate pin. Once the positive voltage is applied to the Gate the MOSFET switches on. The detectors’ output voltage is then proportional to the MOSFET Drain-Source voltage and this is applied to the Gate via the driver. This action provides a rapid MOSFET turn off at zero Drain current.


  • Flyback Converters in:
    • o ≥90W Laptop Adaptors

Product Specifications

Product Parameters

AEC Qualified Yes
Compliance (Only Automotive supports PPAP) Standard
Supply Voltage VCC (V) 25 V
Quiesent Supply Current (mA) 5.16 mA
Drain Voltage V(V) 180 V
Mode of Operation DCM CrCM CCM
Switching Frequency (kHz) ≤250 kHz
Proportional Gate Drive Control (Y|N) Yes
Turn-On Time TON (ns) 250 ns
Turn-OffThresholdVoltage (mV) 10 mV
Turn-Off Delay Time TOFF (ns) 15 ns
Gate Source Current ISOURCE (A) 2.5 A
Gate Sink Current ISINK (A) 7 A

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Evaluation Boards and User Guides

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