MII 53278

53278
28 V HIGH SIDE LATCHING SOLID-STATE
POWER CONTROLLER
Features:
Applications:
•
•
•
•
•
•
•
•
•
•
•
•
Switch Status Output
I2T circuit protection
SPST, normally open
1A , 2A Pin Configurable Operating Current
Power FET output with Low on-state resistance
Full military temperature operation:
-55ºC to +125ºC.
Radiation hardened capable.
Military environmental screening available
Mii
MICROPAC
MICROCIRCUITS PRODUCTS
DIVISION
Ideal for 24V bus applications
Aircraft Power Distribution
Military/High Reliability Systems
Satellite/Space Systems
DESCRIPTION
The 53278 is a military SPST, solid-state relay. It is a lightweight device resistant to damage from shock and vibration, and
immune to contact-related problems (contamination, arcing) associated with mechanical equivalents.
Transformer coupling between the input and output stages provides effective isolation up to 1000 V RMS. The Power FET
output eliminates bipolar offset and minimizes output voltage drop.
The preferred control input is CMOS compatible operating from a bias supply of 4.5 to 5.5VDC. (See Figure 1)
Integral short-circuit protection, I2T trip and status output is provided. This unit is Pin configurable for 1A or 2A output. The
output current flow is sensed while under load or while switching, and responds to an over-current with an I2T trip curve by
opening the output. An open-collector Status is available to indicate the switch state. The output will remain blocked
indefinitely until the short is removed and the unit reset. This feature prevents damage to the controller and also averts
further system failures that may be caused by the short circuit. Output Status is On (High) when the output is switched on
and is Off (Low) whenever the output is commanded off or tripped. Resetting the unit is accomplished by recycling the input
control.
This device is available in a variety of quality levels from COTS to class K including any custom screening requirements and
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 ..............................................................................................................................50 VDC
Transient output voltage……………………………………………………………………………………………………. ....60 VDC
Load Current ....................................................................................................................................................18A / Self Limiting
Bias supply voltage, VDD ...................................................................................................................................... 4.5 to 5.5 VDC
Operating temperature ............................................................................................................................ -55ºC to +125ºC Case
Storage temperature ..........................................................................................................................................-55ºC to +125ºC
Notes:
1
2
60 Hz sine wave
Reversing polarity on the output may cause permanent damage
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: [email protected] 2/24/04 Rev. D
Pg. 1 of 7
53278
28V HIGH SIDE LATCHING SOLID-STATE POWER CONTROLLER
ELECTRICAL CHARACTERISTICS
TA = +25° C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
5.5
VDC
10
mA
Input characteristics
CMOS configurations (Figure 1)
Bias supply range, VDD
3.3
Bias current
5
Input current
5 VDC Input
Control voltage range
-0.5
Turn-on voltage
At VDD = 5.0V
Turn-off voltage
At VDD = 5.0V
0.5
60 Hz
1000
Dielectric strength
Bus Return Bias Current:
2.8
28V Bus Voltage
500
µA
5.5
VDC
3.2
VDC
2.0
VDC
V RMS
10
20
mA
Output characteristics
Output current, sustaining:
Steady state load
1.2 / 2.4
Continuous blocking voltage
2.4 / 4.8
A
50
VDC
On-state resistance, Rds (1A Configuration)
25ºC Case
0.075
0.1
Ohms
On-state resistance, Rds (2A Configuration)
25ºC Case
0.050
0.075
Ohms
Turn-on time @ 25ºC case
Figure 2
0.8
2.0
mS
Turn-off time @ 25ºC case
Figure 2
0.5
1.0
mS
At Maximum Blocking Voltage
40
100
µA
700
pF
9/18
A
Off-state leakage
Output Capacitance
Load Start current
25ºC
6/12
7.5/15
Short-circuit peak
100
Remove short / overload
& Cycle input
Trip Reset Time
Status Output Specification
Status Supply Voltage (open Collector)
50
A
mS
5.0
32
VDC
Status off leakage current
VS = 30 VDC
100
µADC
Status off leakage current
VS = 15 VDC
4
µADC
Status on voltage
ISTATUS = 5 MA
0.4
VDC
High-To-Low Transition Time
ISTATUS = 5 MA
50
µS
Junction temperature
Thermal resistance,
20
150
ºC
θJA
30
ºC/W
θJC
5
ºC/W
APPLICATION NOTES:
1. Maximum input switching frequency not to exceed 20 Hz under normal conditions, or 1 Hz if output is shorted.
2. Input transitions should be <1 ms and duration and input source should be “bounceless contact” type.
3. Inductive loads must be suppressed.
4. Peak current that may flow when output is shorted.
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: [email protected] 2/24/04 Rev. D
Pg. 2 of 7
53278
28V HIGH SIDE LATCHING SOLID-STATE POWER CONTROLLER
Figure 1 Typical Connection Diagram
1 ms
MAX
90%
CONTROL
10%
90%
10%
tON
tOFF
90%
LOAD VOLTAGE
10%
10%
Figure 2 Switching Characteristics
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: [email protected] 2/24/04 Rev. D
Pg. 3 of 7
53278
28V HIGH SIDE LATCHING SOLID-STATE POWER CONTROLLER
VDD
CONTROL
ON
OFF
ON
SIMULATED
SHORT
OFF
3A
IOUT
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 I2T must trip value.
Note 2: Shorted while On from any On operating condition can have a several 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 & Fault 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: [email protected] 2/24/04 Rev. D
Pg. 4 of 7
53278
28V HIGH SIDE LATCHING SOLID-STATE POWER CONTROLLER
Truth Table – Power Sequencing
Bus Voltage
0
On
0
VDD
0
0
On
Control
X
X
X
I Out
Open
Open
Output
Status
Open “1”
Short
X
On
On
0
X
X
Open
Open
0
1
Open “1”
0
0
X
X
Off
Off
Off
Off
(Note 1)
(Note 1,2)
(Note 3)
(Note 3,4)
(Note 5)
(Note 5)
Open “1”
Truth Table – Short circuit and Status
Turn on into Short Sequence
Short while on Sequence
Control
0
1
1
0
1
1
1
1
0
1
I out
Off
Off
Off
Off
On
On
Off
Off
Off
On
Output
Status
0
0
0
0
Open “1”
Open “1”
0
0
0
Open “1”
Shorted
Output
Shorted
Shorted
X
Off
Off
Off
On
X
X
Off
Note 1: Unit Powers up in the Off condition with application of either Bus power or VDD.
Note 2: Fault Status reports only when VDD 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 VDD 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 • 905 E. Walnut St., Garland, TX 75040 • (972) 272-3571 • Fax (972) 494-2281
www.micropac.com
E-MAIL: [email protected] 2/24/04 Rev. D
Pg. 5 of 7
53278
28V HIGH SIDE LATCHING SOLID-STATE POWER CONTROLLER
Package Dimensions
Pin 1
Pin 10
IN
1
2
3
4
5
6
7
8
9
10
FUNCTION
FAULT STATUS
VDD
CONTROL RETURN
CONTROL
BUS RETURN
OUT (1A)
OUT SENSE
OUT (1A)
+ BUS
+ OUT BUS
Note: For 1A output, connect Pins 6 and 7 or Pins 7 and 8; for 2A output connect Pins 6, 7 and 8.
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: [email protected] 2/24/04 Rev. D
Pg. 6 of 7
53278
28V HIGH SIDE LATCHING SOLID-STATE POWER CONTROLLER
NOTES:
1) Initial current limits (NO TRIP and MUST TRIP) will be 6 and 9A for each of the 1A outputs.
2) 1A Output (Case pins 6 and 7 connected together). Output current per graph.
3) 2A Output (Case pins 6,7 and 8 connected together). Output current two times values of graph.
CURRENT (Amps) per Output
10
8
6
4 4
2
0.01
1
MUST TRIP LIMIT
NO TRIP LIMIT
0.1
GUARANTEED MUST TRIP LIMIT
AT TA ≥ -18°C
1
2.4A
1.2A
10
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: [email protected] 2/24/04 Rev. D
Pg. 7 of 7