The 53503 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, I
2
T trip and output status is provided. The output current flow is continuously monitored and
responds to an over-current condition with an I
2
T 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. Standard 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
1
Isolation voltage .......................................................................................................................................................1000 V RMS
2
Continuous operating output voltage ................................................................................................100, 200, 400 or 500 VDC
3
Transient output voltage …………………………………………………………………. .....................100, 200, 400 or 500 VDC
Load Current ..................................................................................Less Than 8 Times Rated Operating Current / Self Limiting
Bias supply voltage, V
DD
....................................................................................................................................... -.6 to 5.5 VDC
Power Bias supply voltage ............................................................................................................................................400 VDC
Control Voltage ................................................................................................................. 1 Volt above V
DD
/ Volt below Return
Operating temperature ............................................................................................................................ -55ºC to +125ºC Case
Storage temperature ..........................................................................................................................................-55ºC to +125ºC
Notes:
1
2
3
60 Hz sine wave
Reversing polarity on the output may cause permanent damage
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
E-MAIL:
microsales@micropac.com
12/29/05 Rev G
www.micropac.com
Pg. 1 of 8
53503
ELECTRICAL CHARACTERISTICS
T
A
= -55 to 125° C
PARAMETER
Input characteristics
CMOS configurations (Figure 1)
Bias supply range, V
DD
Bias current
Input current
Control voltage range
Turn-on voltage
Turn-off voltage
Dielectric strength
Output characteristics
Power Bus Supply (Note 1)
Output current, sustaining:
Load Start current (not adjusted)
Output Pass Current adjustment range:
Continuous blocking voltage
On-state resistance, R
ds
On-state resistance, R
ds
Turn-on time @ 25ºC case
Turn-off time @ 25ºC case
Off-state leakage
Output Capacitance
Status Output Specification
Trip Reset Time
Status Supply Voltage (open Collector)
Status off leakage current
Status on voltage
High-To-Low Transition Time
Junction temperature
Thermal resistance,
θ
JA
θ
JC
Latching, Isolated Output Solid State Power Controllers
TEST CONDITIONS
MIN
TYP
MAX
UNITS
3.0
5 VDC Input
-0.5
5.0
3
5.5
10
500
6.0
VDC
mA
µ
A
VDC
VDC
VDC
V RMS
2.8
0.5
60 Hz / Input /output / Power Bus/ Case
1000
2.7
3.2
24 to 400 VDC
Steady state load Current
Whichever is less
Current factor above sustaining
0 to 100ms
0 to 100ms
Output device Rating
25ºC Case (Table 1)
125ºC Case (Table 1)
Figure 2
Figure 2
At Maximum Blocking Voltage
100
20%
3A
600
10
20
mA
%
ADC
900
50
Rating
%
% of Initial
VDC
Ohms
Ohms
1.0
1.0
100
3.0
3.0
300
3,000
mS
mS
µ
A
pF
Remove overload & Cycle input
VS = 15 VDC
I
STATUS
= 5 MA @ 25ºC
I
STATUS
= 5 MA
50
5.0
32
4
0.4
20
50
150
30
5
mS
VDC
µADC
VDC
µS
ºC
ºC/W
ºC/W
APPLICATION NOTES:
1. Maximum input switching frequency not to exceed 20 Hz under normal conditions, or into a shorted output.
2. Input transitions should be “bounceless contact” with transitions of <1 ms.
3. Inductive loads must be suppressed.
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
Pg. 2 of 8
53503
Latching, Isolated Output Solid State Power Controllers
5A Sustaining
100 VDC Units
200 VDC Units
400 VDC Units
500 VDC Units
30 / 40 mΩ
40 / 60 mΩ
90 / 160 mΩ
110 / 200 mΩ
10A Sustaining
18 / 25 mΩ
24 / 38 mΩ
60 / 110 mΩ
80 / 150 mΩ
15A Sustaining
14 / 22 mΩ
18 / 26 mΩ
See 53504
See 53504
TABLE 1
25ºC / 125ºC R
ds
On Vales by Unit Voltage and Current Rating.
FIGURE 1
High or Low side isolated switch connection. Full isolation exists between Input Logic and status, Output Switch
connects, Power Bias and Case.
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
Pg. 3 of 8
53503
Latching, Isolated Output Solid State Power Controllers
1 ms
CONTROL
10%
MAX
90%
90%
10%
t
ON
90%
LOAD VOLTAGE
10%
10%
t
OFF
Figure 2 Switching Characteristics
VDD
CONTROL
OFF
ON
ON
SIMULATED
SHORT
OFF
3A
I
OUT
OUTPUT STATUS
OFF
ON
(OPEN)
Figure 3 - TIMING DIAGRAM
Note 1: A turn-off into a short produces an increase in current to the initial I
2
T must trip value.
Note 2: Shorted while On from any On operating condition can have a
µs
surge current of as much as
100A.
Note 3: Loss of and re-application of Bus power will result in a re-start (output open & Output Status low.)
Note 4: Output Status signal assumes a pull-up voltage is always present to produce a “1” when status is open.
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
Pg. 4 of 8
53503
Latching, Isolated Output Solid State Power Controllers
Truth Table – Power Sequencing
Bus Voltage
0
On
0
On
On
V
DD
Control
I Out
Output
Status
Short
0
X
Open
Open “1”
X
0
X
Open
Open “1”
X
(Note 1)
On
X
Open
0
X
(Note 1,2)
0
Open
0
Off
(Note 3)
Off
(Note 3,4)
Off
(Note 5)
X
X
1
Open “1”
Off
(Note 5)
0
Truth Table – Short circuit and Status
Turn on into Short Sequence
Control
I out
Output
Status
Shorted
Output
0
Off
0
Shorted
1
Off
0
Shorted
1
Off
0
X
0
Off
0
Off
1
On
Open “1”
Off
1
On
Open “1”
Off
Short while on Sequence
1
Off
0
On
1
Off
0
X
0
Off
0
X
1
On
Open “1”
Off
Note 1: Unit Powers up in the Off condition with application of either Bus power or V
DD
.
Note 2: Fault Status reports only when V
DD
is present.
Note 3: Control “0” Off must be invoked upon simultaneous applications of 5V and Bus Power for an unambiguous output
and fault status.
Note 4: An Off Control to On Control transition is required to first turn the Unit On.
Note 5: Loss of V
DD
will not change output state during normal operation.
Note 6: Truth Table Power sequencing: Output Status open collector pull-up resistor is assigned a separate and always
present voltage, producing a “1” when “Open”.
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
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