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53504
LATCHING, ISOLATED OUTPUT SOLID
STATE POWER CONTROLLERS
Mii
MICROCIRCUITS DIVISION
Features:
Switch Status Output
I2T circuit protection with status output
SPST, normally open
15A, 20A and 30A Operating Current
Power FET output with Low on-state resistance
Full military temperature operation:
-55C to +125C.
Radiation hardened capable.
Military environmental screening available
Applications:
Designed for 24V, 150V and 270V bus
applications
Aircraft Power Distribution
Military/High Reliability Systems
Satellite/Space Systems
DESCRIPTION
The 53504 Solid-State Power Controllers are lightweight, resistant to damage from shock and vibration, and immune to
contact-related problems (contamination, arcing) associated with mechanical equivalents.
Transformer coupling between the input, output and Power Bus stages provides effective isolation of 1000 V RMS. The
Power FET output eliminates bipolar offset and minimizes output voltage drop.
The Control input is CMOS or TTL logic compatible and may operate from a bias supply of 4.5 to 5.5VDC. (See Figure 1)
Integral short-circuit protection, I2T trip and output status is provided. The output current flow is continuously monitored and
responds to an over-current condition with an I2T trip curve by opening the output. Over-current conditions include Over-
Load and shorted output during Turn-On. An open-collector Fault Status or Output Status (optional) is available to indicate
the fault or switch state. The output remains blocked until the short is removed and the unit reset. This feature prevents
damage to the controller while averting further system failures that may be caused by the short circuit. Output Fault is an
Active Low output remaining high (open) under all operating conditions except during an Output Fault. The optional Output
Status is high when the output is On and Low when the output is Off. Resetting the unit is accomplished by recycling the
input control.
This device is available in various quality levels from COTS to class K including any custom screening requirements. All
components have radiation-hardened equivalents. The basic data sheet part is environmentally screened to H level in
accordance with Table C-IX of MIL-PRF-38534 with no element evaluation or QCI.
ABSOLUTE MAXIMUM RATINGS
Isolation voltage
1.......................................................................................................................................................1000 V RMS
Output withstanding voltage
2..............................................................................................................100, 200, 400 or 500 VDC
Transient output voltage
3…………………………………………………………………. .....................100, 200, 400 or 500 VDC
Load Current ..................................................................................Less Than 8 Times Rated Operating Current / Self Limiting
Bias supply voltage, VDD ....................................................................................................................................... -.6 to 5.5 VDC
Control Voltage ................................................................................................................. 1 Volt above VDD / Volt below Return
Operating temperature ............................................................................................................................ -55C to +125C Case
Storage temperature ..........................................................................................................................................-55C to +125C
Notes:
1 60 Hz sine wave
2 Reversing polarity on the output may cause permanent damage
3 Device rating. Application derating not included in these values
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL: microsales@micropac.com
12/29/05 Rev G
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