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SSP-21120-080 Datasheet

  • SSP-21120-080

  • POWER CONTROLLERS|Rad Hard Hybrid. True I2t Protection. Outp...

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  • ETC

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SSP-21120
28 VDC SOLID-STATE POWER
CONTROLLER MODULE
DESCRIPTION
The SSP-21120 Series of 28 Vdc,
Solid-State Power Controllers (SSPCs)
replace electromagnetic circuit break-
ers and solid-state relays rated for 40,
60, and 80 amperes. The SSPCs offer
status outputs and permit external
input logic control allowing for remote
location near to the load. The three
models in the series differ only in rated
current, so that fault and I
2
T trip char-
acteristics can be selected to protect
wiring and loads.
Using Power MOSFET switches, these
Power Controllers offer low 鈥渙n鈥?resis-
tance, low voltage drop, high 鈥渙ff鈥?/div>
impedance, and low power dissipation.
Built with Power MOSFETs and cus-
tom monolithics and using thick film
hybrid technology, they offer small
size, low power, and high reliability in a
module.
Built-In-Test (BIT) has been provided to
monitor, in real time, the status of the
internal circuitry as well as circuitry exter-
nal to the SSPC. This BIT monitors MOS-
FET failure and control circuit failure.
The SSP-21120 Series will operate
over the temperature range from -55擄C
to +85擄C with no thermal derating, see
ordering information.
FEATURES
鈥?/div>
True I
2
T Protection
鈥?/div>
No Thermal Derating
鈥?/div>
Isolated Control Circuitry
鈥?/div>
MIL-STD-704 Compliant
鈥?/div>
Status Outputs
鈥?/div>
Instant Trip Protection
鈥?/div>
Low Power Dissipation
鈥?/div>
Solid-State Reliability
APPLICATIONS
Designed to replace circuit breakers in
land, air, and space vehicles, these
Solid-State Power Controller Modules
provide status outputs for light and
heavy overloads as well as minimum
load current.
SSP-21120
POWER IN
NEUTRAL*
V BIAS SUPPLY INPUT
STATUS 1
STATUS 2
CONTROL COMMAND
V BIAS SUPPLY COMMON**
Internal P.S.
Control
Hybrid
Control
FET
Hybrid
POWER OUT
Sense Circuit
NOTE: *NEUTRAL = POWER GROUND; **V BIAS SUPPLY COMMON = SIGNAL GROUND
FIGURE 1. SSP-21120 BLOCK DIAGRAM
漏
1995, 1999 Data Device Corporation

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