SENSITRON
SEMICONDUCTOR
TECHNICAL DATA
DATASHEET 4310, Rev B
SPDXXD28 SERIES
DC Solid State Power Controller Module
Description:
The Solid State Power Controller (SSPC) Module is a microcontroller-based Solid State Relay rated upto 25A designed to be used in Army, Air force and Navy in 28V DC applications.  This module has integrated current sensing with no derating over the full operating temperature range.  The module is the electronic equivalent to an electromechanical circuit breaker with isolated control and status.
This series is supplied in 3 product families covering 9 current ranges:
SPD5D28 Family:
- SPD5D28-1:
1A
- SPD5D28-3:
3A
- SPD5D28-5:
5A
SPD15D28 Family:
- SPD14D28-7:
7A
- SPD14D28-10:
10A
- SPD14D28-14:
14A
SPD25D28 Family:
- SPD25D28-15:
15A
- SPD25D28-20:
20A
- SPD25D28-25:
25A
Compliant Documents & Standards:
MIL-STD-1275B, Notice1 Characteristics of 28 Volt DC Electrical Systems in Military Vehicles-4/20/04 MIL-STD-704F  Aircraft
Electrical
Power Characteristics 12 March 2004 MIL-STD-217F, Notice 2 Reliability Prediction of Electronic Equipment 28 Feb 1995
Module Features:
•Epoxy Shell Construction
•Solid State Reliability; Low Weight (20 gms) - High Power Density •Same Pin Out as Industry Standard SSPCs in a Smaller Outline •Extremely Low Power, No Derating Over the Full Temperature Range Electrical Features (SPDXXD28 Series):
•28VDC Input with Very Low Voltage Drop; 60mV, typ. @15A
• True I2t Protection from 32A to 250A with Nuisance Trip Suppression •Instant Trip Protection (50 µsec typ) for Loads Above 250A •Unlimited Interrupt Capability; Repetitive Fault Handling Capability • Thermal Memory
•Internally Generated Isolated Supply to Drive the Switch
•Low Bias Supply Current: 20 mA typ @ 5V DC
•High Control Circuit Isolation: 750V DC Control to Power Circuit •Soft Turn-On to Reduce EMC Issues
• EMI Tolerant
•Module Reset with a Low Level Signal; Reset Circuit is Trip-Free •TTL/CMOS Compatible, Optically Isolated, Input and Outputs
Schmitt-Trigger Control Input for Noise Immunity
SENSITRON
SEMICONDUCTOR
TECHNICAL DATA
DATASHEET 4310, Rev B  SPDXXD28 SERIES
Table 1 - Electrical Characteristics (at 25 o C and V bias  = 5.0V DC unless otherwise specified)
Power
Input Voltage – Continuous                      – Transient  0 to 40V DC, 50V DC Absolute Maximum +600V or –600V Spike (< 10 uS) Power Dissipation See Table 4 Current
See Table 4 See Trip Curve Max Voltage Drop
See Table 4 Max current without tripping
110% min
Trip time
See Trip Curve Output Rise Time (turn ON)
110 µsec typ Output Fall Time under normal turn-off 110 usec typ Output Fall Time under Fault 50 usec typ Min Load Requirement
Nil
Protection
Short Circuit Protection Unlimited
Instant Trip
800%, min; 1200%, max
Physical Characteristics
Temperature
Operating Temperature T A  = -55 °C  to +100 °C Storage Temperature
T A  = -55 °C  to +125 °C
Environmental
Altitude
Up to 30,000 ft
Can be installed in an unpressurized area Case Dimensions    1.825”L x 1.25”W x 0.38”H Operating Orientation Any
Weight
20 grams typ
MTBF (Estimate: MIL STD 217F)
1.1 Mhrs at 25°C Full load
Control & Status (TTL/CMOS Compatible)
BIAS (Vcc)
5.0V DC Nominal,
6.5V DC Absolute Maximum 4.5V to 5.5 VDC BIAS  (Vcc) Current
20 mA typ 25 mA, max
GATE Status, Load Status Signals
V oh =3.7V, min, at I oh =-20mA V ol =0.4V, max, at I ol =20mA CONTROL Signal
V T+ (Positive-going input threshold voltage)          V T − (Negative-going input threshold voltage)          ∆V T  Hysteresis (V T + V T −)
2.0V, min,
3.5V, max 1.2V, min, 2.3V, max 0.6V, min, 1.4V, max
Reset
Cycle CONTROL Signal
SENSITRON
SEMICONDUCTOR
TECHNICAL DATA
DATASHEET 4310, Rev B
SPDXXD28 SERIES
Figure 1 - Trip Curve
Figure 2 - Timing Diagram
SENSITRON
SEMICONDUCTOR
TECHNICAL DATA
DATASHEET 4310, Rev B
SPDXXD28 SERIES
Table 2 - Signal Timing – (-55 o C to 100 o C @ LINE = 28V DC)
Parameter Symbol Min Max
Units
CONTROL to GATE Status Delay for Turn On t0    1 ms Turn ON Delay t1  200 µs Load Current Rise Time t2 50 200 µs Turn ON to LOAD Status Delay t3    1 ms  CONTROL to GATE Status Delay for Turn Off t4    1 ms Turn OFF Delay t5  200 µs Load Current Fall Time t6 50 200 µs Turn OFF to LOAD Delay t7    1 ms Note: Current Fall Time from trip dependent on magnitude of overload
Figure 3 - Mechanical Dimensions
Table 3 - Pin Definitions
Pin Number Pin Name
Function
1 BIAS
+5V DC Supply 2 GND 5V Return 3 GATE Status Switch Status
4 LOAD Status Load Current Detection
5 CONTROL Input On/Off Control
6 LINE
+28V DC Supply 7 ---
No Pin 8 PWRGND 28V Return 9 --- No Pin 10 LOAD Load Connection
SENSITRON
SEMICONDUCTOR
TECHNICAL DATA
DATASHEET 4310, Rev B
SPDXXD28 SERIES
Table 4 – Individual Model Ratings
SPD5D28 Family
Model SPD5D28-1 SPD5D28-3 SPD5D28-5 Current Rating @ 100O C
1A 3A 5A
Power Dissipation 0.01W typ @ 0.6A 25O C
0.035W max @ 1A 25O C
0.04W max @ 1A 100O C
0.04W typ @ 1.8A 25O C
0.14W max @ 3A 25O C
0.16W max @ 3A 100O C
0.09W typ @ 3A 25O C
0.30W max @ 5A 25O C
0.36W max @ 5A 100O C
Max Voltage Drop 18mV typ @ 0.6A 25O C
35mV max @ 1A 25O C
40mV max @ 1A 100O C
23mV typ @ 1.8A 25O C
46mV max @ 3A 25O C
53mV max @ 3A 100O C
30mV typ @ 3A 25O C
60mV max @ 5A 25O C
71mV max @ 5A 100O C
SPD14D28 Family
Model SPD14D28-7 SPD14D28-10 SPD14D28-14 Current Rating @ 100O C
7A 10A 14A
Power Dissipation 0.15W typ @ 4.2A 25O C
0.49W max @ 7A 25O C
0.60W max @ 7A 100O C
0.26W typ @ 6A 25O C
0.87W max @ 10A 25O C
1.10W max @ 10A 100O C
0.48W typ @ 8.4A 25O C
1.61W max @ 14A 25O C
2.06W max @ 14A 100O C
Max Voltage Drop 35mV typ @ 4.2A 25O C
70mV max @ 7A 25O C
86mV max @ 7A 100O C
43mV typ @ 6A 25O C
87mV max @ 10A 25O C
110mV max @ 10A 100O C
57mV typ @ 8.4A 25O C
115mV max @ 14A 25O C
147mV max @ 14A 100O C
SPD25D28 Family
Model SPD25D28-16 SPD25D28-20 SPD25D28-25 Current Rating @ 100O C
16A 20A 25A
Power Dissipation 0.41W typ @ 9.6A 25O C
1.44W max @ 16A 25O C
1.73W max @ 16A 100O C
0.60W typ @ 12A 25O C
2.11W max @ 20A 25O C
2.56W max @ 20A 100O C
0.90W typ @ 15A 25O C
3.15W max @ 25A 25O C
3.86W max @ 25A 100O C
Max Voltage Drop 43mV typ @ 9.6A 25O C
timeout on t2 timer90mV max @ 16A 25O C
108mV max @ 16A 100O C
50mV typ @ 12A 25O C
105mV max @ 20A 25O C
128mV max @ 20A 100O C
60mV typ @ 15A 25O C
126mV max @ 25A 25O C
154mV max @ 25A 100O C

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