Diodes Incorporated – Active ORing MOSFET controller supports power supplies up to ±400V


Offering the capability to support redundancy power systems with rail voltages up to ±400V, the ZXGD3112N7 Active ORing MOSFET controller introduced by Diodes Incorporated builds on a successful design employed in previous 40V and 200V devices.
A low turn-off threshold voltage enables MOSFETs that have a very low on-resistance to operate as ideal diodes. This enables the implementation of a highly efficient power system that is suitable for applications in which the ORing of two or more power supplies together provides for redundancy.

Use of the ZXGD3112N7 will also help to advance the trend to use higher system voltages to raise power-distribution efficiency.

It contributes to increased system reliability, since its use in conjunction with low on- resistance MOSFETs allows operation at lower temperatures compared to the alternative of using a Schottky blocking diode.

In addition to increasing system efficiency, its turn-off threshold voltage of

With its best-in-class turn-off threshold voltage and a 400V rating that is four times that of competing ORing controllers, the ZXGD3112N7 excels in efficiency, reliability and stability over the entire load range.


  • 400V drain-voltage rating for high DC voltage telecoms power systems
  • -3mV threshold for stability under light load
  • <50mW standby power


  • (N + 1) redundant power supplies
  • Telecoms power supplies
  • High-voltage data centres and servers
  • Remote feeding