Diodes Incorporated
SO 8

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

Back to Active OR-ing Controller


Active OR'ing Controller

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


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.


  • 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


Active OR‘ing Controller in:

  • (N + 1) Redundant Power Supplies
  • Telecom and Networking
  • Data Centers and Servers

Product Specifications

Product Parameters

AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Supply Voltage VCC (V) 25 V
Drain Voltage V(V) 40 V
Source CurrentISOURCE (A) 2 A
Sink CurrentISINK (A) 5 A
Turn-OffTime (td2) (ns) 400 ns
Turn-OffTime (tf) (ns) 131 ns

Related Content


Technical Documents


Evaluation Boards and User Guides

Recommended Soldering Techniques