ZXGD3108N8:Active OR'ing Controller

Part NumberData SheetSPICE ModelQualified to AECQ10xPPAP CapableSupply Voltage VCC (V)Drain Voltage VD (V)Source CurrentISOURCE (A)Sink CurrentISINK (A)Turn-OffTime (td2) (ns)Turn-OffTime (tf) (ns)

ZXGD3108N8 is a 40V Active OR-ing MOSFET controller designed for driving a very low RDS(ON) Power MOSFET as an ideal diode. This replaces the standard rectifier to reduce the forward voltage drop and overall increase the power transfer efficiency.


The ZXGD3108N8 can be used on both high-side and low-side power supply units (PSU) with rails up to ±40V. It enables very low RDS(ON) MOSFETs to operate as ideal diodes as the turn-off threshold is only ‑3mV with ±2mV tolerance.  In the typical 12V configuration, the standby power consumption is <5mW as the low quiescent supply current is <400µA.  During PSU fault condition, the OR‘ing Controller detects the power reduction and rapidly turns off the MOSFET in <600ns to block reverse current flow and avoid the common bus voltage dropping.

  • (N + 1) Redundant Power Supplies
  • Telecom and Networking
  • Data Centers and Servers
  • Active OR’ing MOSFET Controller for High- or Low-Side PSU
  • Ideal Diode to Reduce Forward Voltage Drop
  • -3mV typical Turn-Off Threshold with ±2mV Tolerance
  • 40V Drain Voltage Rating
  • 25V VCC Rating
  • <5mW Standby Power with Quiescent Supply Current <400µA
  • <600ns Turn-Off Time to Minimize Reverse Current
  • Totally Lead-Free & Fully RoHS compliant
  • Halogen and Antimony free. “Green” Device
  • ZXGD3108N8TC
ZXGD3108N8.pdf ZXGD3108N8