IRF ATR2815DF/CH

PD - 94550A
ATR28XXD SERIES
28V Input, Dual Output
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
Description
The ATR28XXD Series of DC/DC converters feature
high power density and an extended temperature range
for use in military and industrial applications. Designed
to MIL-STD-704D input requirements, these devices
have nominal 28VDC inputs with ±12V and ±15V dual
outputs to satisfy a wide range of requirements. The
circuit design incorporates a pulse width modulated
single forward topology operating in the feed-forward
mode at a nominal switching frequency of 550KHz.
Input to output isolation is achieved through the use of
transformers in the forward and feedback circuits.
The advanced feedback design provides fast loop
response for superior line and load transient characteristics
and offers greater reliability and radiation tolerance
than devices incorporating optical feedback circuits.
Three standard temperature grades are offered with
screening options. Refer to Part Number section. They
can be provided in a standard plug-in package for PC
mounting or in a flanged package for more severe
environments.
ATR
Features
Manufactured in a facility fully qualified to MIL-PRF- 38534, these converters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet.
Variations in electrical, mechanical and screening can
be accommodated.
16V to 40VDC Input Range (28VDC Nominal)
±12V and ±15V Outputs Available
Indefinite Short Circuit and Overload Protection
3
35W/in Power Density
30W Output Power
Fast Loop Response for Superior Transient
Characteristics
Operating Temperature Range from -55°C to
+125°C
Popular Industry Standard Pin-Out
Resistance Seam Welded Case for Superior
Long Term Hermeticity
Ceramic Feed-thru Pins
External Synchronization
High Efficiency
Shutdown from External Signal
Military Screening
Standard Microcircuit Drawings Available
Extensive computer simulation using complex modeling
enables rapid design modification to be provided.
Contact IR Santa Clara with specific requirements.
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1
01/12/07
ATR28XXD Series
Specifications
TCASE = -55°C to +85°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input voltage
Power Output
Soldering temperature
-0.5V to +50VDC
Internally limited, 36W typical
300°C for 10 seconds
Recommended Operating temperature
Maximum Operating temperature
Storage case temperature
Temperature Range 1
PARAMETER
STATIC CHARACTERISTICS
OUTPUT
Voltage
Current 5
Ripple
Accuracy
Power1
REGULATION
Line
Load
CROSS REGULATION6
INPUT
Voltage Range
Current
Ripple Current
EFFICIENCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
SYNC Frequency Range 7
DYNAMIC CHARACTERISTICS
Step Load Changes
Output
Transient
Recovery 2
Step Line Changes
Output
Transient
Recovery 2
TURN-ON
Overshoot
Delay3
Load Fault Recovery
Condition
-55°C ≤ TC ≤ +85°C, VIN = 28 V DC
±5%, CL=0, unless otherwise
specified
VIN = 16 to 40 V DC
IOUT = 0 to Full Load
Full Load, 20KHz to 2MHz
T CASE = 25°C, Full Load
ATR2815D
ATR2812D
Min
Typ
Max
Min
Typ
Max
Units
±11.76
0.0
±12
±12.24
±1.25
85
±12.12
±14.70
0.0
±15
±15.30
±1.0
85
±15.15
VDC
ADC
mV p-p
VDC
W
75
150
±5
mV
mV
%
40
75
18
50
±11.88
30
40
±12
V IN = 16 to 40 V DC
IOUT = 0 to Full Load
V IN = 16, 28, and 40 VDC
±14.85
30
40
±15.00
75
120
±5
16
No Load, pin 2 = open
Inhibited, pin 2 tied to pin 10
Full Load
Full Load TC = +25°C
Input to output @500 V DC
No effect on performance
T C = +25°C (total for both outputs)
Short Circuit
Overload, T C = +25°C
IOUT = Full Load
-55°C to +85°C
-55°C to +115°C
-65°C to +135°C
28
25
82
100
100
VDC
mA DC
mA DC
mA p-p
%
MΩ
µF
9.0
14
600
700
9.0
14
600
700
W
W
KHz
KHz
40
75
18
50
100
16
28
25
82
100
500
500
500
500
50% Load to 100% Load
No Load to 50% Load
±100
±250
±100
±250
mVpk
mVpk
50% Load to 100% Load
No Load to 50% Load
50% Load to No Load
25
500
3.0
25
500
3.0
µs
µs
ms
Input step
Input step
Input step
Input step
±180
-600
5.0
5.0
±180
-600
5.0
5.0
mVpk
mVpk
ms
ms
16
40
16
40
to
to
to
to
40
16
40
16
V DC
V DC
V DC
V DC
V IN = 16 to 40 V DC
IOUT = O and Full Load
V IN = 16 to 40 V DC
0.0
14
14
600
25
25
0.0
14
14
600
25
25
mVpk
ms
ms
Notes to Specifications
1.
2.
3.
4.
5.
6.
7.
Above +85°C case temperature, derate output power linearly to 0 at +115°C case.
Recovery time is measured from the initiation of the input transient to where VOUT has returned to within ±1% of V OUT at 50% load.
Turn-on delay time measurement is for either an application of power at the input or a signal at the inhibit pin.
Load current split equally between +VOUT and –VOUT .
Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30W.
3W load on output under test, 3W to 27W on other output.
Sync. Input signal: VIL = -0.5V Min, 0.8V Max and V IN = 2.5V Min, 11.5V Max for 10% to 90% duty cycle.
2
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ATR28XXD Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
A bso lu te M axim u m R ating s
Input voltage
P ow er O utput
S oldering tem perature
-0.5V to +50V DC
Internally lim ited, 36W typical
300°C for 10 seconds
Recom m ended O perating tem perature
M axim um Operating tem perature
Storage case tem perature
T em perature R ange 1
PARAMETER
STATIC CHARACTERISTICS
OUTPUT
Voltage
Current 5
Ripple
Accuracy
Power1
REGULATION
Line
Load
CROSS REGULATION 6
INPUT
Voltage Range
Current
Ripple Current
EFFICIENCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
SYNC Frequency Range 7
DYNAMIC CHARACTERISTICS
Step Load Changes
Output
Transient
Recovery 2
Step Line Changes
Output
Transient
Recovery 2
TURN-ON
Overshoot
Delay3
Load Fault Recovery
Condition
-55°C ≤ TC ≤ +125°C, V IN = 28
VDC ±5%, CL=0, unless
otherwise specified
VIN = 16 to 40 V DC
IOUT = 0 to Full Load
Full Load, 20KHz to 2MHz
TCASE = 25°C, Full Load
ATR2812D/ES
ATR2815D/ES
Min
Typ
Max
Min
Typ
Max
Units
±11.76
0.0
±12
±12.24
±1.25
85
±12.12
±14.70
0.0
±15
±15
±1.0
85
±15.15
V DC
A DC
mV p-p
V DC
W
±11.88
30
40
±12.00
±14.85
30
40
±15.00
75
120
±5
VIN = 16 to 40 V DC
IOUT = 0 to Full Load
VIN = 16, 28, and 40 V DC
16
No Load, pin 2 = open
Inhibited, pin 2 tied to pin 10
Full Load
Full Load TC = +25°C
Input to output @500 V DC
No effect on performance
TC = +25°C (total for both
outputs)
Short Circuit
Overload, TC = +25°C
IOUT = Full Load
-55°C to +125°C
-55°C to +135°C
-65°C to +135°C
80
100
28
25
82
40
75
18
50
75
150
±5
16
79
100
28
25
82
100
9.0
14
600
700
500
500
500
500
40
75
18
50
mV
mV
%
100
V DC
mA DC
mA DC
mA p-p
%
MΩ
µF
9.0
14
600
700
W
W
KHz
KHz
50% Load to 100% Load
No Load to 50% Load
±100
±250
±100
±250
mVpk
mVpk
50% Load to 100% Load
No Load to 50% Load
50% Load to No Load
25
500
3.0
25
500
3.0
µs
µs
ms
±180
-600
5.0
5.0
±180
-600
5.0
5.0
mVpk
mVpk
ms
ms
Input
Input
Input
Input
step
step
step
step
16
40
16
40
to
to
to
to
40
16
40
16
V DC
V DC
V DC
V DC
VIN = 16 to 40 V DC
IOUT = O to Full Load
VIN = 16 to 40 V DC
0.0
14
14
600
25
25
0.0
14
14
600
25
25
mVpk
ms
ms
Notes to Specifications
1.
2.
3.
4.
5.
6.
7.
Above +125°C case temperature, derate output power linearly to 0 at +135°C case.
Recovery time is measured from the initiation of the input transient to where V OUT has returned to within ±1% of VOUT at 50% load.
Turn-on delay time measurement is for either an application of power at the input or a signal at the inhibit pin.
Load current split equally between +V OUT and –VOUT.
Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30W.
3W load on output under test, 3W to 27W on other output.
Sync. Input signal: V IL = -0.5V Min, 0.8V Max and V IN = 2.5V Min, 11.5V Max for 10% to 90% duty cycle.
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3
ATR28XXD Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input voltage
Power Output
Soldering temperature
-0.5V to +50VDC
Internally limited, 36W typical
300°C for 10 seconds
Recommended Operating temperature
Maximum Operating temperature
Storage case temperature
Temperature Range1
PARAMETER
STATIC CHARACTERISTICS
OUTPUT
Voltage
Current 5
Ripple
Accuracy
Power1
REGULATION
Line 4
Load4
CROSS REGULATION 6
INPUT
Voltage Range
Current
Ripple Current
EFFICIENCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
SYNC Frequency Range 7
DYNAMIC CHARACTERISTICS
Step Load Changes
Output4
Transient
Recovery 2
Step Line Changes
Output
Transient
Recovery 2
TURN-ON
Overshoot
Delay3
Load Fault Recovery
Condition
-55°C ≤ TC ≤ +125°C, VIN = 28 V DC
±5%, CL=0, unless otherwise
specified
V IN = 16 to 40 VDC
I OUT = 0 to Full Load
Full Load, 20KHz to 2MHz
T CASE = 25°C, Full Load
ATR2812D/HB
ATR2815D/HB
Min
Typ
Max
Min
Typ
Max
Units
±11.76
0.0
±12.00
±12.24
±1.25
85
±12.12
±14.70
0.0
±15
±15.30
±1.0
85
±15.15
VDC
ADC
mV p-p
VDC
W
±11.88
30
40
±12.00
V IN = 16 to 40 VDC
I OUT = 0 to Full Load
V IN = 16, 28, and 40 V DC
±14.85
30
40
±15.00
75
120
±5
16
No Load, pin 2 = open
Inhibited, pin 2 tied to pin 10
Full Load
Full Load TC = +25°C
Input to output @500 V DC
No effect on performance
T C = +25°C (total for both outputs)
Short Circuit
Overload, T C = +25°C
I OUT = Full Load
-55°C to +125°C
-55°C to +135°C
-65°C to +135°C
80
100
28
25
82
500
500
40
75
18
50
75
150
±5
16
28
18
40
75
18
50
mV
mV
%
100
100
VDC
mADC
mADC
mA p-p
%
MΩ
µF
9.0
14
600
700
9.0
14
600
700
W
W
KHz
KHz
79
100
25
82
500
500
50% Load to 100% Load
No Load to 50% Load
±100
±250
±450
±760
±100
±250
±450
±750
mVpk
mVpk
50% Load to 100% Load
No Load to 50% Load
50% Load to No Load
25
500
3.0
70
1500
5.0
25
500
3.0
70
1500
5.0
µs
µs
ms
±180
-600
5.0
5.0
1200
-1500
10
10
±180
-600
5.0
5.0
1500
-1500
10
10
mVpk
mVpk
ms
ms
0.0
14
14
600
25
25
0.0
14
14
600
25
25
mVpk
ms
ms
Input step
Input step
Input step
Input step
16
40
16
40
to
to
to
to
40 V DC
16 V DC
40 V DC
16 V DC
V IN = 16 to 40 VDC
I OUT = O to Full Load
V IN = 16 to 40 VDC
Notes to Specifications
1.
2.
3.
4.
5.
6.
7.
Above +125°C case temperature, derate output power linearly to 0 at +135°C case.
Recovery time is measured from the initiation of the input transient to where VOUT has returned to within ±1% of VOUT at 50% load.
Turn-on delay time measurement is for either an application of power at the input or a signal at the inhibit pin.
Load current split equally between +V OUT and –VOUT.
Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30W.
3W load on output under test, 3W to 27W on other output.
Sync. Input signal: VIL = -0.5V Min, 0.8V Max and V IN = 2.5V Min, 11.5V Max for 10% to 90% duty cycle.
4
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ATR28XXD Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input voltage
Power Output
Soldering temperature
-0.5V to +50VDC
Internally limited, 36W typical
300°C for 10 seconds
Recommended Operating temperature
Maximum Operating temperature
Storage case temperature
Temperature Range 1
PARAMETER
STATIC CHARACTERISTICS
OUTPUT
Voltage
Current 5
Ripple
Accuracy
Power1
REGULATION
Line4
Load 4
CROSS REGULATION6
INPUT
Voltage Range
Current
Ripple Current
EFFICIENCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
SYNC Frequency Range 7
DYNAMIC CHARACTERISTICS
Step Load Changes
Output 4
Transient
Recovery 2
Step Line Changes
Output
Transient
Recovery 2
TURN-ON
Overshoot
Delay3
Load Fault Recovery
Condition
-55°C ≤ TC ≤ +125°C, VIN = 28 V DC
±5%, CL=0, unless otherwise
specified
VIN = 16 to 40 V DC
IOUT = 0 to Full Load
Full Load, 20KHz to 2MHz
TCASE = 25°C, Full Load
ATR2812D/CH
ATR2815D/CH
Min
Typ
Max
Min
Typ
Max
Units
±11.76
0.0
±12.00
±12.24
±1.25
85
±12.12
±14.70
0.0
±15
±15.30
±1.0
85
±15.15
VDC
ADC
mV p-p
VDC
W
±11.88
30
40
±12.00
VIN = 16 to 40 V DC
IOUT = 0 to Full Load
VIN = 16, 28, and 40 VDC
±14.85
30
40
±15.00
75
120
±5
16
No Load, pin 2 = open
Inhibited, pin 2 tied to pin 10
Full Load
Full Load TC = +25°C
Input to output @500 VDC
No effect on performance
TC = +25°C (total for both outputs)
Short Circuit
Overload, TC = +25°C
IOUT = Full Load
-55°C to +125°C
-55°C to +135°C
-65°C to +135°C
80
100
28
25
82
500
500
40
75
18
50
75
150
±5
16
28
18
100
100
VDC
mADC
mADC
mA p-p
%
MΩ
µF
9.0
14
600
700
9.0
14
600
700
W
W
KHz
KHz
79
100
25
82
500
500
40
75
18
50
mV
mV
%
50% Load to 100% Load
No Load to 50% Load
±100
±250
±450
±760
±100
±250
±450
±750
mVpk
mVpk
50% Load to 100% Load
No Load to 50% Load
50% Load to No Load
25
500
3.0
70
1500
5.0
25
500
3.0
70
1500
5.0
µs
µs
ms
Input
Input
Input
Input
±180
-600
5.0
5.0
1200
-1500
10
10
±180
-600
5.0
5.0
1500
-1500
10
10
mVpk
mVpk
ms
ms
0.0
14
14
600
25
25
0.0
14
14
600
25
25
mVpk
ms
ms
step
step
step
step
16
40
16
40
to
to
to
to
40
16
40
16
VDC
VDC
VDC
VDC
VIN = 16 to 40 V DC
IOUT = 0 to Full Load
VIN = 16 to 40 V DC
Notes to Specifications
1.
2.
3.
4.
5.
6.
7.
Above +125°C case temperature, derate output power linearly to 0 at +135°C case.
Recovery time is measured from the initiation of the input transient to where VOUT has returned to within ±1% of V OUT at 50% load.
Turn-on delay time measurement is for either an application of power at the input or a signal at the inhibit pin.
Load current split equally between +V OUT and –VOUT.
Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30W.
3W load on output under test, 3W to 27W on other output.
Sync. Input signal: VIL = -0.5V Min, 0.8V Max and V IN = 2.5V Min, 11.5V Max for 10% to 90% duty cycle.
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5
ATR28XXD Series
Block Diagram
1
3 +Vout
EMI
Filter
+Input
Regulator
2
Inhibit Input
4
Primary
Housekeeping
Supply
Output
Return
5 -Vout
8
Case
9
Sync
Drive
Error
Amp &
Ref
Pulse Width
FB
Modulator
CS
10
Input Return
Application Information
Thermal Management
Inhibit Function
Assuming that there is no forced air flow, the package
temperature rise above ambient (∆T) may be calculated
using the following expression:
Connecting the inhibit input (Pin 2) to input common (Pin 10)
will cause the converter to shut down. It is recommended
that the inhibit pin be driven by an open collector device
capable of sinking at least 400µA of current. The open
circuit voltage of the inhibit input is 11.5 ±1.0VDC.
EMI Filter
An EMI filter (AFC461), available as an option, will reduce
the input ripple current to levels below the limits imposed by
MIL-STD-461B CEO3.
∆Τ = 80 A
Pd
0.85
(°C)
(1)
where A = the effective surface area in square inhes
(in-cluding heat sink if used), Pd = power dissipation in watts.
The total surface area of the ATR standard package is
7.34 square inches. If a worse case full load efficiency of
78% is assumed, then the case temperature rise can be
calculated as follows:
⎡ 1
⎤
⎡ 1
⎤
Pd = POUT ⎢
− 1⎥ = 30 ⎢
− 1⎥ = 8.5W
Eff
78
⎣
⎦
⎣
⎦
Device Synchronization
Whenever multiple DC/DC converters are utilized in a single
system, significant low frequency noise may be generated
due to slight difference in the switching frequencies of the
converters (beat frequency noise). Because of the low
frequency nature of this noise (typically less than 10KHz),
it is difficult to filter out and may interfere with proper operation
of sensitive systems (communications, radar or telemetry).
The International Rectifier ATR28XX converters provide a
synchronizing input permitting synchronization of multiple
converters to the frequency of the users system clock,
thereby minimizing this type of noise.
–0.7
and
∆Τ = 80 (7.34)
–0.7
(8.5)
0.85
= 122°C
Hence, if T AMBIENT = +25°C, the DC/DC converter case
temperature will be approximately 147°C if no heat sink
or air flow is provided.
To calculate the heat sink area required to maintain a
specific case temperature rise, equation (1) may be
manipulated as follows:
⎡ ∆T ⎤
AHEATSINK = ⎢
0. 85 ⎥
⎣⎢ 80Pd
⎦⎥
−1.43
− APKG
As an example, if it is desired to limit the case
temperature rise to a maximum of 50°C above ambient,
the required effective heat sink area is:
⎡
⎤
50
AHEATSINK = ⎢
0. 85 ⎥
80
(
8
.
5
)
⎣
⎦
6
−1.43
− 7.34 = 19.1in 2
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ATR28XXD Series
Mechanical Outlines
Non-Flanged
Flanged
Ø 0.162
2 Holes
0.050
0.800
6
10
8
7
4
5
4 X 0.400
=1.600
3
1.110
2.110
Max
2
2.550
1
2.880
Max
9
0.040 D X
0.26 L Pins
2.110
0.390
Max
0.390
Max
Pin Designation
Pin #
Designation
1
+ Input
2
Inhibit Input
3
+ Output
4
Output Return
5
- Output
6
NC
7
NC
8
Case Ground
9
Sync.
10
Input Return
Standard Microcircuit Drawing Equivalence Table
Standard Microcircuit
Drawing Number
5962-94627
5962-94628
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Vendor Cage
Code
52467
52467
IR Standard
Part Number
ATR2812D
ATR2815D
7
ATR28XXD Series
Device Screening
Requirement
MIL-STD-883 Method
Element Evaluation
Non-Destructive
Bond Pull
No Suffix
ES HB
CH
-20°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C
Temperature Range
MIL-PRF-38534
N/A
N/A
N/A
Class H
2023
N/A
N/A
N/A
N/A
Internal Visual
2017
Yes
Yes
Yes
Temperature Cycle
1010
N/A
Cond B
Cond C
Cond C
Constant Acceleration
2001, Y1 Axis
N/A
500 Gs
3000 Gs
3000 Gs
N/A
N/A
PIND
2020
N/A
N/A
Burn-In
1015
N/A
48 [email protected] temp
Final Electrical
MIL-PRF-38534
25°C
25°C 160 [email protected]°C 160 [email protected]°C
-55°C, +25°C,
-55°C, +25°C,
( Group A )
& Specification
+125°C
+125°C
PDA
MIL-PRF-38534
N/A
N/A
N/A
10%
Seal, Fine and Gross
1014
Cond A
Cond A, C
Cond A, C
Cond A, C
Radiographic
2012
N/A
N/A
N/A
N/A
External Visual
2009
Yes
Yes
Yes
Notes:
Best commercial practice
Sample tests at low and high temperatures
-55°C to +105°C for AHE, ATO, ATW
Part Numbering
ATR 28 15 D F /CH
Screening Level
Model
Input Voltage
Nominal
Package Style
Output Voltage
Output
28 = 28V
12 = ±12V
15 = ±15V
(Please refer to Screening Table)
No Suffix, ES, HB, CH
F = Flange
Blank = Non - Flanged
D = Dual
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105
IR SANTA CLARA: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500
Visit us at www.irf.com for sales contact information.
Data and specifications subject to change without notice. 01/2007
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