SPOR30D28

SPOR30D28 TECHNICAL DATA DATA SHEET 5054, REV- 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 onresistance 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 opencircuit of oring MOSFETs. This module also provides an interface for customers to diagnose the shortcircuit 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 opencircuit of oring MOSFETs Ability to check short-circuit fault of oring MOSFETs TTL and COMS compatible control input/output Compact design Epoxy shell construction 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 TECHNICAL DATA DATA SHEET 5054, REV- ELECTRICAL CHARACTERISTICS (Tested under 25˚C unless otherwise specified) Power Input Voltage From 15V to 40V Power Dissipation See Fig 4 Current Typical 30A Maximum Voltage Drop See Fig 3 Control PWRFLT1 , PWRFLT2 FUSEFLE1 , FUSEFLT2 Pins Output Low LINE1HI, LINE2HI, Pins Output Low PWRFLT1 , PWRFLT2 FUSEFLE1 , FUSEFLT2 , LINE1HI, LINE2HI, Pins Leakage Current FETCHK1, FETCHK2 Pins Input Current 100mV typical 200mV maximum 150mV typical 400mV maximum 0 typical ± 1µA maximum 80mA maximum PHYSICAL CHARACTERISTICS TEMPERATURE Operating Temperature Storage Temperature TA= − 40 ° C To 85° C TA= − 55 ° C To 125 ° C 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 2 SPOR30D28 TECHNICAL DATA DATA SHEET 5054, REV- MECHANICAL DIMENSIONS (in Inches) 221 West Industry Court, Deer Park, NY 11729-4681 Phone (631) 586 7600 Fax (631) 2429798 Page 3 World Wide Web- http:// www.sensitron.com Email Address- sales@sensitron.com SPOR30D28 TECHNICAL DATA DATA SHEET 5054, REV- PIN DEFINITIONS Pin Symbol LINE1, LINE2 FUSE1, FUSE2 Pin Description Load FETCHK1, FETCHK2 LINE1HI, LINE2HI GND PWRFLT 1 , PWRFLT 2 FUSEFLE1 , FUSEFLT 2 28V line input pins If fuses are required in the power distribution path, they can be located between LINE1, 2 and FUSE1, 2. Otherwise short LINE1, 2 and FUSE1, 2. Output pin of the module. This pin is used to connect to the load. FET check input pins. Together with PWFLT1, 2 output pins, the FETCHK1, 2 pins can be used to determine the short-circuit fault of oring MOSFETs. These two pins indicate which channel has higher line voltage. The pin of higher line voltage gives open drain output, otherwise it is shorted to GND. Ground of the module. This pin should be connected to 28V return. Output pin of fault detection. (see Fault Table for details) Output pin of blown fuse detection. FAULT TABLE1 FETCHK Low Low Low Low VDS (V) 3.5V True True False False VLINE (V) >26V True False True False FUSEFLT PWRFLT COMMMENTS Normal operation VLINE1