SPDPXXD28_09_技术文档

SENSITRON

SEMICONDUCTOR

SPDPXXD28 SERIES

TECHNICAL DATA

DATASHEET 5023, Rev D.1

Programmable DC Solid State Power Controller Module

Description:

These Solid State Power Controller (SSPC) Modules are designed to operate without any heatsink

requirements. They are microcontroller-based Solid State Relays rated up to 30A designed to be used in high

reliability 28V DC applications. These modules have integrated current sensing with no derating over the full

operating temperature range. These modules are the electronic equivalent to electromechanical circuit

breakers with isolated control and status. This series is supplied in 6 SSPC families, with each family being

programmable over a 5:1 current range.

SPDP05D28: Programmable from 1A to 5A

SPDP10D28: Programmable from 2A to 10A

SPDP15D28: Programmable from 3A to 15A

SPDP20D28: Programmable from 4A to 20A

SPDP25D28: Programmable from 5A to 25A

SPDP30D28: Programmable from 6A to 30A

Compliant Documents & Standards:

MIL-STD-1275B, Notice1

MIL-STD-704F

Characteristics of 28 Volt DC Electrical Systems in Military Vehicles-4/20/04

Aircraft Electrical Power Characteristics 12 March 2004

MIL-STD-217F, Notice 2

Reliability Prediction of Electronic Equipment 28 Feb 1995

Module Features:

• No additional heat sinking or external cooling required!

• Extremely Low Power, No Derating Over the Full Temperature Range

• Low Weight (20 gms)

• Same Pin Out as Industry Standard SSPCs in a Smaller Outline

• Epoxy Shell Construction

• Solid State Reliability

• High Power Density

Electrical Features (SPDPXXD28 Series):

• 28VDC Input with Very Low Voltage Drop; 64mV, typ. @15A for SPDP25D28

• True I²t Protection up to 10X rating with Nuisance Trip Suppression

• Instant Trip Protection (50 μsec typ) for Loads Above 10X rating

• Unlimited Interrupt Capability; Repetitive Fault Handling Capability

• Thermal Memory

• Internally Generated Isolated Supply to Drive the Switch

• Low Bias Supply Current: 25 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

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SENSITRON

SEMICONDUCTOR

SPDPXXD28 SERIES

TECHNICAL DATA

DATASHEET 5023, Rev D.1

Table 1 - Electrical Characteristics (at 25 ^oC and V_bias= 5.0V DC unless otherwise specified)

Control & Status (TTL/CMOS Compatible)

5.0V DC Nominal, 6.5V DC Absolute Maximum

4.5V to 5.5 VDC

BIAS (Vcc)

25 mA typ

31 mA, max

BIAS (Vcc) Current

V_oh=3.7V, min, at I_oh=-20mA

GATE Status, Load Status Signals

V_ol=0.4V, max, at I_ol=20mA

CONTROL Signal

V

_T+(Positive-going input threshold voltage)

2.0V, min, 3.5V, max

1.2V, min, 2.3V, max

0.6V, min, 1.4V, max

Cycle CONTROL Signal

V_T−(Negative-going input threshold voltage)

ΔV_THysteresis (V_T+ V_T−)

Reset

Power

Input Voltage – Continuous

0 to 40V DC, 55V DC Absolute Maximum

+600V or –600V Spike (< 10 µs)

See Table 5

– Transient

Power Dissipation

See Table 5

See Figure 1, Trip Curve

Current

Max Voltage Drop

See Table 5

Max current without tripping

110% min

Trip time

See Figure 1, Trip Curve

300 μsec typ

150 usec typ

50 usec typ

Output Rise Time (turn ON)

Output Fall Time under normal turn-off

Output Fall Time under Fault

Min Load Requirement

Nil

Protection

Short Circuit Protection

Unlimited

Instant Trip

800%, min; 1200%, max

Table 2 - Physical Characteristics

Temperature

Operating Temperature

Storage Temperature

T_A= -55 °C to +100 °C

T_A= -55 °C to +125 °C

Environmental

Up to 30,000 ft

Altitude

Can be installed in an unpressurized area

1.875”L x 1.125”W x 0.385”H

Any

Case Dimensions

Operating Orientation

Weight

30 grams typ

MTBF (Estimate: MIL STD 217F)

1.1 Mhrs at 25°C Full load

Note: Extreme temperature performance at -55C is only guaranteed if the bias power is left ON while the unit is

being cooled. The product family has a guaranteed low temperature performance down to -20C below which

some units may exhibit higher bias current (up to 65mA) and unstable Gate and Load Status upon cold start up

to 15 seconds. This issue has been addressed and eliminated in a newer version of this product family. Contact

factory for further information.

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SENSITRON

SEMICONDUCTOR

SPDPXXD28 SERIES

TECHNICAL DATA

DATASHEET 5023, Rev D.1

Figure 1 - Trip Curve

Figure 2 - Timing Diagram

CONTROL

t0

t4

SWITCH STATUS

t5

LOAD CURRENT

t6

t1

t2

t7

LOAD STATUS

t3

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SEMICONDUCTOR

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TECHNICAL DATA

DATASHEET 5023, Rev D.1

Table 3 - Signal Timing – (-55 ^oC to 100 ^oC @ LINE = 28V DC)

Parameter

Symbol

Min (μs) Max (μs)

CONTROL to GATE Status Delay for Turn On

Turn ON Delay

Load Current Rise Time

Turn ON to LOAD Status Delay

CONTROL to GATE Status Delay for Turn Off

Turn OFF Delay

t0

t1

t2

t3

t4

t5

t6

t7

80

300

325

250

1500

375

325

100

500

150

175

750

125

175

50

Load Current Fall Time

Turn OFF to LOAD Delay

300

Note: Current Fall Time from trip dependent on magnitude of overload

Figure 3 - Mechanical Dimensions

All dimensions are in inches

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SEMICONDUCTOR

SPDPXXD28 SERIES

TECHNICAL DATA

DATASHEET 5023, Rev D.1

Table 4 - Pin Definitions

Pin Number Pin Name

Function

1

2

BIAS

GND

+5V DC Supply

5V Return

3

4

5

6

GATE Status

LOAD Status

CONTROL Input

LINE

Switch Status

Load Current Detection

On/Off Control

+28V DC Supply

7

8

9

GAINRET

PWRGND

GAIN

Internally connected to LOAD (pin 10)

28V Return

Gain Adjust

10

LOAD

Load Connection

Table 5 – Individual Model Ratings

SPDP05D28

SPDP05D28 Set for

2.5 Amp Rating

SPDP05D28 Set for

1.0 Amp Rating

1.0A

5 Amp Rating

5A

Current Rating @ 100^OC

2.5A

0.18W typ @ 0.6A 25^OC

0.19W max @ 1A 25^OC

0.19W max @ 1A 100^OC

9mV typ @ 0.6A 25^OC

15mV max @ 1A 25^OC

17mV max @ 1A 100^OC

0.21W typ @ 1.5A 25^OC

0.27W max @ 2.5A 25^OC

0.28W max @ 2.5A 100^OC

22mV typ @ 1.5A 25^OC

36mV max @ 2.5A 25^OC

42mV max @ 2.5A 100^OC

0.31W typ @ 3A 25^OC

0.54W max @ 5A 25^OC

0.59W max @ 5A 100^OC

44mV typ @ 3A 25^OC

73mV max @ 5A 25^OC

83mV max @ 5A 100^OC

Power Dissipation

(including Control Power)

Max Voltage Drop

SPDP10D28

SPDP10D28 Set for

2.0 Amp Rating

SPDP10D28 Set for

5 Amp Rating

SPDP10D28 Set for

10 Amp Rating

Current Rating @ 100^OC

2.0A

5A

10A

0.19W typ @ 1.2A 25^OC

0.21W max @ 2A 25^OC

0.22W max @ 2A 100^OC

11mV typ @ 1.2A 25^OC

19mV max @ 2A 25^OC

23mV max @ 2A 100^OC

0.26W typ @ 3A 25^OC

0.41W max @ 5A 25^OC

0.47W max @ 5A 100^OC

29mV typ @ 3A 25^OC

48mV max @ 5A 25^OC

58mV max @ 5A 100^OC

0.52W typ @ 6A 25^OC

1.13W max @ 10A 25^OC

1.34W max @ 10A 100^OC

57mV typ @ 6A 25^OC

95mV max @ 10A 25^OC

117mV max @ 10A 100^OC

Power Dissipation

(including Control Power)

Max Voltage Drop

SPDP15D28

SPDP15D28 Set for

3.0 Amp Rating

SPDP15D28 Set for

7.5 Amp Rating

SPDP15D28 Set for

15 Amp Rating

Current Rating @ 100^OC

3.0A

7.5A

15A

0.20W typ @ 1.8A 25^OC

0.24W max @ 3A 25^OC

0.26W max @ 3A 100^OC

14mV typ @ 1.8A 25^OC

23mV max @ 3A 25^OC

29mV max @ 3A 100^OC

0.33W typ @ 4.5A 25^OC

0.60W max @ 7.5A 25^OC

0.72W max @ 7.5A 100^OC

34mV typ @ 4.5A 25^OC

56mV max @ 7.5A 25^OC

73mV max @ 7.5A 100^OC

0.78W typ @ 9A 25^OC

1.87W max @ 15A 25^OC

2.35W max @ 15A 100^OC

68mV typ @ 9A 25^OC

113mV max @ 15A 25^OC

145mV max @ 15A 100^OC

Power Dissipation

(including Control Power)

Max Voltage Drop

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SENSITRON

SEMICONDUCTOR

SPDPXXD28 SERIES

TECHNICAL DATA

DATASHEET 5023, Rev D.1

SPDP20D28

SPDP20D28 Set for

20 Amp Rating

4.0 Amp Rating

4.0A

10 Amp Rating

10A

Current Rating @ 100^OC

20A

0.21W typ @ 2.4A 25^OC

0.26W max @ 4A 25^OC

0.28W max @ 4A 100^OC

13mV typ @ 2.4A 25^OC

21mV max @ 4A 25^OC

26mV max @ 4A 100^OC

0.36W typ @ 6A 25^OC

0.70W max @ 10A 25^OC

0.83W max @ 10A 100^OC

32mV typ @ 6A 25^OC

53mV max @ 10A 25^OC

65mV max @ 10A 100^OC

0.93W typ @ 12A 25^OC

2.28W max @ 20A 25^OC

2.80W max @ 20A 100^OC

63mV typ @ 12A 25^OC

105mV max @ 20A 25^OC

131mV max @ 20A 100^OC

Power Dissipation

(including Control Power)

Max Voltage Drop

SPDP25D28

SPDP25D28 Set for

5.0 Amp Rating

SPDP25D28 Set for

12.5 Amp Rating

12.5A

SPDP25D28 Set for

25 Amp Rating

25A

Current Rating @ 100^OC

5.0A

0.21W typ @ 3A 25^OC

0.28W max @ 5A 25^OC

0.31W max @ 5A 100^OC

13mV typ @ 3A 25^OC

21mV max @ 5A 25^OC

28mV max @ 5A 100^OC

0.41W typ @ 7.5A 25^OC

0.84W max @ 12.5A 25^OC

1.13W typ @ 15A 25^OC

2.84W max @ 25A 25^OC

Power Dissipation

(including Control Power)

1.04W max @ 12.5A 100^OC 3.64W max @ 25A 100^OC

32mV typ @ 7.5A 25^OC

64mV typ @ 15A 25^OC

Max Voltage Drop

53mV max @ 12.5A 25^OC

107mV max @ 25A 25^OC

69mV max @ 12.5A 100^OC 139mV max @ 25A 100^OC

SPDP30D28

SPDP30D28 Set for

6.0 Amp Rating

SPDP30D28 Set for

15 Amp Rating

SPDP30D28 Set for

30 Amp Rating

Current Rating @ 100^OC

6.0A

15A

30A

0.23W typ @ 3.6A 25^OC

0.33W max @ 6A 25^OC

0.37W max @ 6A 100^OC

15mV typ @ 3.6A 25^OC

26mV max @ 6A 25^OC

33mV max @ 6A 100^OC

0.52W typ @ 9A 25^OC

1.13W max @ 15A 25^OC

1.42W max @ 15A 100^OC

38mV typ @ 9A 25^OC

64mV max @ 15A 25^OC

83mV max @ 15A 100^OC

1.55W typ @ 18A 25^OC

4.01W max @ 30A 25^OC

5.16W max @ 30A 100^OC

77mV typ @ 18A 25^OC

123mV max @ 30A 25^OC

166mV max @ 30A 100^OC

Power Dissipation

(including Control Power)

Max Voltage Drop

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SEMICONDUCTOR

SPDPXXD28 SERIES

TECHNICAL DATA

DATASHEET 5023, Rev D.1

Figure 5 - Electrical Block Diagram

GAIN GAIN RTN

Description

Figure 5 shows the block diagram of the SPDPXXD28 SSPC Series. It uses a SN74LVC3G14 device for digital

I/O. This TTL compatible device has a Schmitt-Trigger input to minimize the effects of noise on the input. Its

outputs can each drive more than 10 standard TTL loads. It’s also compatible with CMOS inputs and outputs.

The SN74LVC3G14 is isolated from the remainder of the module circuitry by three optocouplers.

The block labeled “Control & Protection Circuitry” gets power from the DC-DC converter and is referenced to the

output of the SSPC. This block contains an amplifier to gain up the voltage developed across the sense

resistor. It also contains a microcontroller with on-board timers, A/D converter, clock generator and independent

watchdog timer. The microcontroller implements a precision I²t protection curve as well as an Instant Trip

function to protect the wiring and to protect itself. It performs all of the functions of multiple analog comparators

and discrete logic in one high-reliability component.

The “Control & Protection Circuitry” block also has the ability to adjust the current rating of each model of the

SPDPXXD28 Series over a 5:1 range. If the “Gain” terminal is left open, the SSPC will be set for maximum

rating. If the “Gain” terminal is connected directly to the “Gain Return” terminal, the SSPC will be set for 1/5 of

the maximum rating. Furthermore, a resistor connected between the “Gain” terminal and the “Gain Return”

terminal will set a rating between maximum and 1/5 of maximum. See Figure 10 for the relationship between

rating and resistor value.

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DATASHEET 5023, Rev D.1

The code programmed in the microcontroller acquires the output of the internal A/D converter, squares the

result and applies it to a simulated RC circuit. It checks the output of the simulated circuit to determine whether

or not to trip (turn off the power Mosfets). Because the microcontroller simulates an analog RC circuit, the

SSPC has ‘thermal memory’. That is, it trips faster if there had been current flowing prior to the overload than if

there hadn’t been current flowing. This behavior imitates thermal circuit breakers and better protects the

application’s wiring since the wiring cannot take as much an overload if current had been flowing prior to the

overload.

The watchdog timer operates from its own internal clock so a failure of the main clock will not stop the watchdog

timer. The code programmed in the microcontroller will periodically reset the watchdog timer preventing it from

timing out. If the code malfunctions for any reason, the watchdog timer is not reset and it times out. When the

watchdog timer times out, it resets the microcontroller. Since the code is designed to detect levels and not

edges, the output of the module, and therefore the output of the SPDPXXD28, immediately reflects the

command on its input.

The Power Mosfets used in the SPDPXXD28 Series have been selected for very low R_ds(on)and results in low

voltage drop and low power dissipation. In most applications, the SPDPXXD28 will be operated at 50 – 60% of

rated current to provide a safety margin. As can be seen in Table 1, when the SPDP25D28 is operated at 15

Amps, 60% of rated current, it only dissipates 1.0 Watt at room temperature. No heat sinking is required for this

condition. However, if the SPDP25D28 is to be operated at maximum rating and/or at elevated temperatures,

the dissipation can exceed 4 Watts and heat sinking is required. Some heat sinking can be accomplished by

adding copper area to the LINE and LOAD pins, a heatsink can be epoxy attached to the surface of the module

or a flat copper or aluminum heatsink can be sandwiched between the SPDP25D28 and the printed circuit board

using a thermal pad to maximize heat transfer. Each application should be evaluated at maximum expected

constant current. The lower current models in the SPDPXXD28 Series do not require heat sinking under all

conditions.

For overloads, no heat sinking is required provided the SPDPXXD28 Series is allowed some time to cool down.

The SPDPXXD28 has sufficient thermal mass that the temperature will rise only a few degrees under the worst-

case overload. Repetitive overloads should be avoided. When the SPDPXXD28 reports a trip condition, the

controller driving the SPDPXXD28 should allow no more than four repetitions and then allow thirty seconds to

cool down before trying to turn on again.

The SPDPXXD28 will trip on overloads in the ALWAYS TRIP region shown in Figure 1 and will never trip when

in the NEVER TRIP region. The SPDPXXD28 can be reset by bringing the CONTROL pin to a logic low. When

the CONTROL pin is brought back to logic high, the SPDPXXD28 will turn back on. If the overload is still

present, the SPDPXXD28 will trip again. Cycling the 5 Volt BIAS power will also reset the SPDPXXD28. If the

CONTROL pin is at logic high when the BIAS power is cycled, the SPDPXXD28 will turn back on when the BIAS

power is re-applied.

Status Outputs

The LOAD and GATE status outputs of the SPDPXXD28 show whether or not the load is drawing current and

Power Mosfet switch is on. A logic high on the LOAD status output shows that the load draws < 5% of rated

load and a logic low shows that the load draws > 15% of rated current. A load that draws between 5% and 15%

of rated current could result in either a high or low logic level on the LOAD status output. Logic high on the

GATE output indicates that the Power Mosfet switch is on while a logic low indicates that the switch is off.

As can be seen in Table 6, of the 8 possible states for the combination of CONTROL, LOAD and GATE, only 3

states represent valid SSPC operation. The other 5 states indicate either a failed SSPC or, more likely, a short

to ground or a short to the BIAS supply of one of the logic outputs. By comparing the CONTROL input with the

LOAD and GATE outputs, the user can determine whether or not the load is supposed to be ON (GATE),

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TECHNICAL DATA

DATASHEET 5023, Rev D.1

whether or not it’s drawing current (GATE) and whether or not the LOAD and GATE outputs are valid responses

to the CONTROL input.

Table 6 – CONTROL, LOAD & GATE Truth Table

State CONTROL LOAD

GATE

Comments

1

2

3

4

5

6

7

8

L

H

L

H

L

H

L

H

L

H

L

H

L

SSPC failure or shorted LOAD output to ground

SSPC failure

Normal OFF condition

SSPC failure or shorted GATE output to BIAS supply

SSPC failure or shorted GATE output to ground

Normal ON condition with load current > 15% rated current

Tripped

H

Normal ON condition with load current < 5% rated current

Wire Size

MIL-W-5088L has a chart the shows wire size as a function of wire temperature and current. This chart is for a

single copper wire in free air. For an ambient temperature of 70 ^oC, the chart allows an 18-gauge wire to handle

o

25 Amps continuously at a wire temperature of 200 C – a wire temperature rise of 130 C. For a wire

temperature limited to 150 ^oC, the chart requires a 16-gauge wire and for a wire temperature of 105 ^oC, the chart

requires a 14-gauge wire.

Amendment 1 of MIL-W-5088L has a table for copper wire in a bundle, group or harness with condition on the

number of wires, percent of total harness capacity, etc. This table shows that a 12 gauge wire is necessary for

200 ^oC operation, 10-gauge for 150 ^oC and 8-gauge for 105 ^oC.

MIL-W-5088L has various figures showing derating for harnesses as a function of the number of current carrying

conductors for different altitudes. MIL-W-5088L only specifies wire for DC or RMS AC conditions, not for

transient or overload conditions. MIL-W-5088L and its amendment should be consulted to determine minimum

wire sizes for other currents and conditions.

For transient or overload conditions, the transient or overload happens so quickly that heat is not transferred

from the wire to the surroundings. The heat caused by the I²R heating of the wire causes the temperature to

rise at a linear rate controlled by the heat capacity of the wire. The equation for this linear rise in temperature,

with respect to time, can be solved as: I²t = constant. Every wire has an I²t rating that’s dependent on the

temperature rise allowed and the diameter of the wire. If the I²t rating of the SSPC or circuit breaker is less than

the I²t rating of the wire, then the SSPC or circuit breaker can protect the wire. The maximum I²t rating for the

SPD2P05D28 is 7.45 x 10³Amp²-Seconds. Every wire size in the paragraphs above has an I²t rating that

exceeds the SPDP25D28 I²t rating for the temperature rises stated. Therefore, to select a wire size, it’s simply a

matter of determining the maximum temperature rise of the application and deciding whether or not the wire will

be in a bundle and use the information above. Similarly, the I²t ratings for the SPDP12D28 and SPDP05D28

are 1.72 x 10³Amp²-Seconds and 300 Amp²-Seconds, respectively.

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DATASHEET 5023, Rev D.1

Application Connections

The SPDPXXD28 Series may be configured as a high-side or low-side switch and may be used in positive or

negative supply applications.

Figure 6 – High-Side Switch, Positive Supply

Figure 6 shows the connections as a high-side switch with a positive power supply.

GAIN GAIN RTN

Figure 7 – Low-Side Switch, Positive Supply

Figure 7 shows a low-side switch with a negative power supply. Note that the PWRGND pin is now connected

to the LINE pin (see Rise/Fall Time paragraph below for more information on the PWRGND pin).

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DATASHEET 5023, Rev D.1

GAIN GAIN RTN

Figures 8 and Figure 9 show negative supply high-side switch and low-side switch implementations. Again,

note the connection of the PWRGND pin.

Figure 8 – High Side Switch, Negative Supply

GAIN GAIN RTN

Figure 9 – Low Side Switch, Negative Supply

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DATASHEET 5023, Rev D.1

GAIN GAIN RTN

Rise Time & Fall Time

The rise and fall times of the SPDPXXD28 are pre-set at the factory for a nominal 100μS with a LINE supply of

28VDC (see Table 3 for min/max limits). The rise and fall times will vary linearly with supply voltage. The

PWRGND pin is used to control the rise and fall times. If the PWRGND pin is left open, the rise and fall times

will be about 50uS. Leaving the PWRGND pin open can be useful when a faster rise or fall time is desirable.

With the PWRGND pin connected as in Figures 6 through 9, the SPDPXXD28, when set for a 25 Amp rating,

can turn on into a capacitive load of 440uF, min, 880uF, typ, without tripping for any power supply voltage within

the ratings. The capacitive load capability is proportional to current rating and can be therefore easily calculated

for each model and setting in the SPDPXXD28 Series.

Wiring and Load Inductance

Wiring inductance can cause voltage transients when the SPDPXXD28 is switched off due to an overload.

Generally, these transients are small but must be considered when long wires are used on either the LINE or

LOAD pins or both. A 10 foot length of wire in free air will cause a transient voltage of about 10 Volts when the

SPDP25D28 trips at an Instant Trip level of 250 Amps. At the rated load current of 25 Amps, the voltage

transient will be about 1 Volt. If longer wire lengths are used, a transient suppressor may be used at the LINE

pin and a power diode may be used at the LOAD pin so that the total voltage between the LINE and LOAD pins

is less than 50 Volts.

When powering inductive loads, the negative voltage transient at the LOAD pin can cause the voltage between

LINE and LOAD to exceed the SPDPXXD28 rating of 50 Volts and a power diode from the LOAD pin to ground

must be used. The cathode of the power diode is connected to the LOAD pin with the anode connected to

ground. The power diode must be able to carry the load current when the SPDPXXD28 switches off. Voltage

transients due to wiring or load inductance are proportional to the operating current.

Paralleling

For example, putting two SPDP25D28s in parallel will not double the rating to 50 Amps. Due to differences in

the R_ds(on)of the Power Mosfets in the SSPCs, the current will not share equally. In addition, there are unit-to-

unit differences in the trip curves so that two SPDP25D28s in parallel may possibly trip at 35 Amps. Also, both

SPDP25D28s will not trip together; the SPDP25D28 carrying the higher current will trip first followed by the

other SPDP25D28. Multiple SPDP25D28s may be used in parallel as long as these complexities are

appreciated. Due not parallel different models of this series as the current sharing will not be predictable.

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DATASHEET 5023, Rev D.1

Board Layout

The current-carrying power circuit should be kept well away from the control circuit and other low-level circuits in

the system. It’s unlikely, but possible, that magnetic coupling could affect the control circuit when turning normal

loads on and off. However, in the case of an overload, the magnetic coupling could be 10 times greater than

with normal loads. Effects of such coupling could cause ‘chattering’ when turning on and off, oscillation, and the

possibility of turning the SPDPXXD28 back on after an overload. The SPDPXXD28 Series is a Trip-Free

device. Once tripped it will not turn back on until reset and commanded on again. Reset is accomplished by

bringing the CONTROL pin low and turning the SSPC back on is accomplished by bringing the CONTROL pin

high. Sufficient magnetic coupling between the current-carrying power circuit and the control circuit can negate

the Trip-Free characteristic.

MIL-STD-704F and MIL-STD-1275B

These standards cover the characteristics of the electrical systems in Military Aircraft and Vehicles. The

SPDPXXD28 Series meets all of the requirements of MIL-STD-704F including Normal, Emergency, Abnormal

and Electric Starting conditions with the Ripple, Distortion Factor and Distortion Spectrum defined in the

standard. The SPDPXXD28 Series also meets all of the requirements of MIL-STD-1275B including operation

with Battery and Generator, Generator Only and Battery Only for all of the conditions described in the standard

including Cranking, Surges, Spikes and Ripple. In addition, the SPDPXXD28 Series can withstand + 600 V

spikes for 10μS. This capability is beyond that required by the standards cited above.

Figure 10 – SPDPXXD28

Rating vs. “Gain” and “Gain Return” Terminals

100.00%

90.00%

80.00%

70.00%

60.00%

50.00%

40.00%

30.00%

20.00%

10.00%

0.00%

10

100

1000

10000

100000

Proramming Resistor

Phone (631) 586 7600 Fax (631) 242 9798 • www.sensitron.com • sales@sensitron.com • Page 13

SENSITRON

SEMICONDUCTOR

SPDPXXD28 SERIES

TECHNICAL DATA

DATASHEET 5023, Rev D.1

ORDERING INFORMATION

SPDPXXD28: XX is for maximum amps. For example, SPDP05D28 is programmable from 1A to 5A.

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.

4- In no event shall Sensitron Semiconductor be liable for any failure in a semiconductor device or any secondary damage resulting from use at

a value exceeding the absolute maximum rating.

5- No license is granted by the datasheet(s) under any patents or other rights of any third party or Sensitron Semiconductor.

6- The datasheet(s) may not be reproduced or duplicated, in any form, in whole or part, without the expressed written permission of Sensitron

Semiconductor.

7- The products (technologies) described in the datasheet(s) are not to be provided to any party whose purpose in their application will hinder

maintenance of international peace and safety nor are they to be applied to that purpose by their direct purchasers or any third party. When

exporting these products (technologies), the necessary procedures are to be taken in accordance with related laws and regulations.

Phone (631) 586 7600 Fax (631) 242 9798 • www.sensitron.com • sales@sensitron.com • Page 14


型号：	SPDPXXD28_09
厂家：	SENSITRON
描述：	Programmable DC Solid State Power Controller Module 可编程直流固态功率控制器模块功率控制控制器
文件：	总14页 (文件大小：202K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SPDPXXD28_09 [SENSITRON]

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