TECHNICAL DATA
DATA SHEET 5054, REV-
221 West Industry Court, Deer Park, NY 11729-4681 Phone (631) 586 7600 Fax (631) 2429798
World Wide Web- http:// www.sensitron.com Email Address- sales@sensitron.com
Page 1
SPOR30D28
ACTIVE ORING CONTROLLER MODULE
DESCRIPTION
In fault tolerant, redundant power distribution systems,
oring
power
diodes
are
commonly
used,
when
paralleling multiple power supplies, to prevent the
occurrence of reverse current if an individual power
supply voltage falls significantly below the others.
Despite of low-cost and easy implementation, the use
of oring power diodes suffers from high power
dissipation especially in high current applications.
The active oring controller module is designed to
replace oring power diodes in high-reliable 28V DC aircraft power systems. Each module is designed
to parallel two power supplies with current rated up to 30A on each line. The module uses low on-
resistance oring MOSFETs driven by an oring controller.
Compared to oring power diodes, this
module dissipates very low power loss and can be operated without any heat sink. In addition, the
module can detect faults of dead short in the sourcing supply, a blown fuse, over load current, or open-
circuit of oring MOSFETs. This module also provides an interface for customers to diagnose the short-
circuit fault of oring MOSFETs.
MODULE FEATURES
• Suitable for 28VDC power systems with current rated up to 30A
• No additional heat sinking or external cooling required
• No external bias supply required
• Low power dissipation
• Smooth switchover between two sourcing supply
• 0.5 µs turn-off time limits peak reverse current
• Ability to reports faults of dead short power supply, blown fuses, over load current, and open-
circuit of oring MOSFETs
• Ability to check short-circuit fault of oring MOSFETs
• TTL and COMS compatible control input/output
• Compact design
• Epoxy shell construction
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