Datasheet

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
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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
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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
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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
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SPOR30D28
TECHNICAL DATA
DATA SHEET 5054, REV-
PIN DEFINITIONS
Pin Symbol
LINE1, LINE2
FUSE1, FUSE2
Load
FETCHK1, FETCHK2
LINE1HI, LINE2HI
GND
PWRFLT 1 , PWRFLT 2
FUSEFLE1 , FUSEFLT 2
Pin Description
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
VFUSE (V)
>3.5V
True
True
False
False
VLINE (V)
>26V
True
False
True
False
FUSEFLT
PWRFLT
COMMMENTS
Low
Low
Low
Low
VDS (V)
<250mV
True
True
True
True
Hi-Z
Hi-Z
Pull-Down
Pull-Down
Hi-Z
Pull-Down
Hi-Z
Pull-Down
Low
False
True
True
Hi-Z
Pull-Down
High2
True
True
True
Hi-Z
Hi-Z
Normal operation
VLINE1 <26V
Blown fuse
VLINE1 <3.5V or
Combination of
proceeding two faults
Open-circuit fault in
MOSFETs or Iload
>180A
Short-circuit fault in
MOSFETs
Good MOSFETs
FETCHK
High2
False
True
True
Hi-Z
Pull-Down
Note1: Fault table is valid for both line1 and line2.
Note2: FETCHK can only be applied on the line with pin LINE1(2)HI high.
221 West Industry Court, Deer Park, NY 11729-4681 Phone (631) 586 7600 Fax (631) 2429798
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SPOR30D28
TECHNICAL DATA
DATA SHEET 5054, REV-
TYPICAL APPLICATIONS
Fig. 1 Basic application
Fig. 2 A design example
221 West Industry Court, Deer Park, NY 11729-4681 Phone (631) 586 7600 Fax (631) 2429798
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SPOR30D28
TECHNICAL DATA
DATA SHEET 5054, REV-
Voltage Drop (mV)
TYPICAL PERFORMANCE CHARACTERISTICS (Tested under 25˚C unless otherwise specified)
48
46
44
42
40
38
36
34
32
30
10
20
30
Load Current (A)
Fig3. Input and output voltage drop versus load current
Power Dissipation (W)
2
1
0
10
20
30
Load Current (A)
Fig4. Power dissipation loss versus load current
221 West Industry Court, Deer Park, NY 11729-4681 Phone (631) 586 7600 Fax (631) 2429798
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SPOR30D28
TECHNICAL DATA
DATA SHEET 5054, REV-
DISCLAIMER:
1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product
characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version of the
datasheet(s).
2- In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment, medical
equipment , and safety equipment) , safety should be ensured by using semiconductor devices that feature assured safety or by means of users’
fail-safe precautions or other arrangement .
3- In no event shall Sensitron Semiconductor be liable for any damages that may result from an accident or any other cause during operation of
the user’s units according to the datasheet(s). Sensitron Semiconductor assumes no responsibility for any intellectual property claims or any
other problems that may result from applications of information, products or circuits described in the datasheets.
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a value exceeding the absolute maximum rating.
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Semiconductor.
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221 West Industry Court, Deer Park, NY 11729-4681 Phone (631) 586 7600 Fax (631) 2429798
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