IRF ATR2812D/CH Advanced analog hybrid-high reliability dc/dc converter Datasheet

PD - 94550
ATR28XXD SERIES
28V Input, Dual Output
ADVANCED ANALOG
HYBRID-HIGH RELIABILITY
DC/DC CONVERTERS
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.
These converters are manufactured in a facility certified to MIL-PRF-38534. All processes used to manufacture these converters have been qualified to enable
Advanced Analog to deliver compliant devices.
Four screening grades are available to satisfy a wide
range of requirements. The CH grade converters are
fully compliant to MIL-PRF-38534 for class H. The HB
grade converters are processed to full class H screening but do not have class H element evaluation as required by MIL-PRF-38534. Both grades are fully tested
and operate over the full military temperature range
without derating of output power. The ES version is a
full temperature device without the full class H or element evaluation. The non-suffix device is a low cost
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ATR
Features
n 16 to 40 VDC Input Range (28 VDC Nominal)
n ±12V and ±15V Outputs Available
n Indefinite Short Circuit and Overload
Protection
3
n 35 W/in Power Density
n 30 Watt Output Power
n Fast Loop Response for Superior Transient
Characteristics
n Operating Temperature Range from -55°C to
+125°C
n Popular Industry Standard Pin-Out
n Resistance Seam Welded Case for Superior
Long Term Hermeticity
n Ceramic Feed-thru Pins
n External Synchronization
n High Efficiency
n Shutdown from External Signal
n Military Screening
limited temperature range option. Variations in
electrical, mechanical and screening can be accommodated.
Extensive computer simulation using complex
modeling enables rapid design modification to
be provided. Contact Advanced Analog with specific requirements.
1
10/29/02
ATR28XXD Series
Specifications
TCASE = -55°C to +85°C, VIN = +28V ± 5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS
Input Voltage
-0.5V to 50VDC
Power Output
Internally limited, 36W typical
Soldering
300°C for 10 seconds
Recommended Operating
-55°C to +85°C
Temperature Range1
Maximum Operating
-55°C to +115°C
Storage
-65°C to +135°C
PARAMETER
STATIC CHARACTERISTICS
OUTPUT
Voltage
5
Current
Ripple
Accuracy
1
Power
REGULATION
Line
Load
6
CROSS REGULATION
INPUT
Voltage Range
Current
Ripple Current
EFFICIENCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
7
SYNC Frequency Range
DYNAMIC CHARACTERISTICS
Step Load Changes
Output
Transient
Recovery
2
Step Line Changes
Output
Transient
2
Recovery
TURN-ON
Overshoot
3
Delay
Load Fault Recovery
Condition
-55°C ≤ TC ≤ +85°C, VIN = 28 VDC
±5%, CL=0, unless otherwise
specified
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
Full Load, 20KHz to 2MHz
TCASE = 25°C, Full Load
ATR2812D
Typ
Max
Min
Typ
Max
Units
±11.76
0.0
±12.00
±12.24
±1.25
85
±12.12
±14.70
0.0
±15.00
±15.30
±1.0
85
±15.15
VDC
ADC
mV p-p
VDC
W
75
150
±5
mV
mV
%
40.0
75
18
50
±11.88
30
40
±12.00
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VIN = 16, 28, and 40 VDC
±14.85
30
40
±15.00
75
120
±5
16.0
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
ATR2815D
Min
28.0
25
82
40.0
75
18
50
100
100
VDC
mADC
mADC
mA p-p
%
MΩ
µF
9
14
600
700
9
14
600
700
W
W
KHz
KHz
100
16.0
28.0
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
25
500
3
µs
µs
ms
Input step 16 to 40 VDC
Input step 40 to 16 VDC
Input step 16 to 40 VDC
Input step 40 to 16 VDC
±180
-600
5
5
±180
-600
5
5
mVpk
mVpk
ms
ms
VIN = 16 to 40 VDC
IOUT = O and Full Load
VIN = 16 to 40 VDC
0
14
14
600
25
25
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 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 +VOUT and –VOUT.
Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30 watts.
3W load on output under test, 3W to 27W on other output.
Sync. Input signal: VIL = -0.5V Min, VIN = 2.5V Min, 10% to 90% duty cycle,
0.8V Max
11.5V Max
2
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ATR28XXD Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS
Input Voltage
-0.5V to 50VDC
Power Output
Internally limited, 36W typical
Soldering
300°C for 10 seconds
Temperature Range1
Recommended Operating
Maximum Operating
Storage
PARAMETER
STATIC CHARACTERISTICS
OUTPUT
Voltage
5
Current
Ripple
Accuracy
1
Power
REGULATION
Line
Load
6
CROSS REGULATION
INPUT
Voltage Range
Current
Ripple Current
EFFICIENCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
7
SYNC Frequency Range
DYNAMIC CHARACTERISTICS
Step Load Changes
Output
Transient
Recovery
2
Step Line Changes
Output
Transient
2
Recovery
TURN-ON
Overshoot
3
Delay
Load Fault Recovery
Condition
-55°C ≤ TC ≤ +125°C, VIN = 28
VDC ±5%, CL=0, unless otherwise
specified
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
Full Load, 20KHz to 2MHz
TCASE = 25°C, Full Load
-55°C to +125°C
-55°C to +135°C
-65°C to +135°C
Typ
Max
Min
Typ
Max
Units
±11.76
0.0
±12.00
±12.24
±1.25
85
±12.12
±14.70
0.0
±15.00
±15.30
±1.0
85
±15.15
VDC
ADC
mV p-p
VDC
W
±11.88
30
40
±12.00
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VIN = 16, 28, and 40 VDC
±14.85
30
40
±15.00
75
120
±5
16.0
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
ATR2815D/ES
ATR2812D/ES
Min
80
100
28.0
25
82
500
500
75
150
±5
mV
mV
%
100
100
VDC
mADC
mADC
mA p-p
%
MΩ
µF
9
14
600
700
9
14
600
700
W
W
KHz
KHz
40.0
75
18
50
16.0
79
100
28.0
25
82
500
500
40.0
75
18
50
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
25
500
3
µs
µs
ms
Input step 16 to 40 VDC
Input step 40 to 16 VDC
Input step 16 to 40 VDC
Input step 40 to 16 VDC
±180
-600
5
5
±180
-600
5
5
mVpk
mVpk
ms
ms
VIN = 16 to 40 VDC
IOUT = O to Full Load
VIN = 16 to 40 VDC
0
14
14
600
25
25
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 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 +VOUT and –VOUT.
Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30 watts.
3W load on output under test, 3W to 27W on other output.
Sync. Input signal: VIL = -0.5V Min, VIN = 2.5V Min, 10% to 90% duty cycle
0.8V Max,
11.5V Max
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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
-0.5V to 50VDC
Power Output
Internally limited, 36W typical
Soldering
300°C for 10 seconds
Temperature Range1
Recommended Operating
Maximum Operating
Storage
PARAMETER
STATIC CHARACTERISTICS
OUTPUT
Voltage
5
Current
Ripple
Accuracy
1
Power
REGULATION
4
Line
4
Load
6
CROSS REGULATION
INPUT
Voltage Range
Current
Ripple Current
EFFICIENCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
7
SYNC Frequency Range
DYNAMIC CHARACTERISTICS
Step Load Changes
4
Output
Transient
Recovery
2
Step Line Changes
Output
Transient
2
Recovery
TURN-ON
Overshoot
3
Delay
Load Fault Recovery
-55°C to +125°C
-55°C to +135°C
-65°C to +135°C
Condition
-55°C ≤ TC ≤ +125°C, VIN = 28 VDC
±5%, CL=0, unless otherwise
specified
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
Full Load, 20KHz to 2MHz
TCASE = 25°C, Full Load
Typ
Max
Min
Typ
Max
Units
±11.76
0.0
±12.00
±12.24
±1.25
85
±12.12
±14.70
0.0
±15.00
±15.30
±1.0
85
±15.15
VDC
ADC
mV p-p
VDC
W
±11.88
30
40
±12.00
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VIN = 16, 28, and 40 VDC
±14.85
30
40
±15.00
75
120
±5
16.0
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
ATR2815D/HB
ATR2812D/HB
Min
80
100
28.0
25
82
500
500
40.0
75
18
50
75
150
±5
16.0
28.0
18
40.0
75
18
50
mV
mV
%
100
100
VDC
mADC
mADC
mA p-p
%
MΩ
µF
9
14
600
700
9
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
70
1500
5
25
500
3
70
1500
5
µs
µs
ms
Input step 16 to 40 VDC
Input step 40 to 16 VDC
Input step 16 to 40 VDC
Input step 40 to 16 VDC
±180
-600
5
5
1200
-1500
10
10
±180
-600
5
5
1500
-1500
10
10
mVpk
mVpk
ms
ms
0
14
14
600
25
25
0
14
14
600
25
25
mVpk
ms
ms
VIN = 16 to 40 VDC
IOUT = O to Full Load
VIN = 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 +VOUT and –VOUT.
Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30 watts.
3W load on output under test, 3W to 27W on other output.
Sync. Input signal: VIL = -0.5V Min, VIN = 2.5V Min, 10% to 90% duty cycle
0.8V Max,
11.5V Max
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
-0.5V to 50VDC
Power Output
Internally limited, 36W typical
Soldering
300°C for 10 seconds
Temperature Range1
Recommended Operating
Maximum Operating
Storage
PARAMETER
STATIC CHARACTERISTICS
OUTPUT
Voltage
5
Current
Ripple
Accuracy
1
Power
REGULATION
4
Line
4
Load
6
CROSS REGULATION
INPUT
Voltage Range
Current
Ripple Current
EFFICIENCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
7
SYNC Frequency Range
DYNAMIC CHARACTERISTICS
Step Load Changes
4
Output
Transient
Recovery
2
Step Line Changes
Output
Transient
2
Recovery
TURN-ON
Overshoot
3
Delay
Load Fault Recovery
-55°C to +125°C
-55°C to +135°C
-65°C to +135°C
Condition
-55°C ≤ TC ≤ +125°C, VIN = 28 VDC
±5%, CL=0, unless otherwise
specified
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
Full Load, 20KHz to 2MHz
TCASE = 25°C, Full Load
ATR2812D/CH
Typ
Max
Min
Typ
Max
Units
±11.76
0.0
±12.00
±12.24
±1.25
85
±12.12
±14.70
0.0
±15.00
±15.30
±1.0
85
±15.15
VDC
ADC
mV p-p
VDC
W
±11.88
30
40
±12.00
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VIN = 16, 28, and 40 VDC
±14.85
30
40
±15.00
75
120
±5
16.0
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
ATR2815D/CH
Min
80
100
28.0
25
82
40.0
75
18
50
75
150
±5
16.0
79
100
28.0
18
25
82
100
9
14
600
700
500
500
500
500
40.0
75
18
50
mV
mV
%
100
VDC
mADC
mADC
mA p-p
%
MΩ
µF
9
14
600
700
W
W
KHz
KHz
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
70
1500
5
25
500
3
70
1500
5
µs
µs
ms
Input step 16 to 40 VDC
Input step 40 to 16 VDC
Input step 16 to 40 VDC
Input step 40 to 16 VDC
±180
-600
5
5
1200
-1500
10
10
±180
-600
5
5
1500
-1500
10
10
mVpk
mVpk
ms
ms
0
14
14
600
25
25
0
14
14
600
25
25
mVpk
ms
ms
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VIN = 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 +VOUT and –VOUT.
Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30 watts.
3W load on output under test, 3W to 27W on other output.
Sync. Input signal: VIL = -0.5V Min, VIN = 2.5V Min, 10% to 90% duty cycle
0.8V Max,
11.5V Max
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5
ATR28XXD Series
ATR28XXD Block Diagram
1
3 +Vout
EMI
F ilte r
+ In pu t
R eg u la to r
2
E n ab le
8
C ase
9
S yn c
P rim ary
H ou se ke e pin g
S u pp ly
4 R etu rn
5 -V o u t
D riv e
E rro r
Am p &
Ref
P u lse W id th
FB
M o d u la to r
CS
In p u t
R etu rn
10
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 VDC.
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(including 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 Advanced Analog 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 TAMBIENT = +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
ATR28XXD Case Outlines
Non-Flanged
Flanged
Ø 0.162
2 H oles
0.050
0.800
6
10
8
7
4
5
4 X 0.400
=1.600
3
2.110
M ax
2
2.550
1
2.880
M ax
9
0.040 D X
0.26 L Pins
2.110
0.390
M ax
0.390
M ax
1.110
Part Numbering
Pin Designation
ATR 28 15 S F / CH
Pin No.
Designation
1
Positive Input
2
Inhibit Input
3
Positive Output
4
Output Return
5
Negative Output
6
N/C
7
N/C
8
Case
9
Sync.
10
Input Return
Model
Input Voltage
28 = 28V Nominal
Output Voltage
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Single - 05, 12, 15VDC
Dual - 12 = ±12V, 15 = ±15V
Triple - 12 = 5V, ±12V
15 = 5V, ±15V
Screening
–,
ES, HB, CH
Package Style
F = Flange
Omit for Non-flange
Outputs
S = Single
D = Dual
T = Triple
7
ATR28XXD Series
Available Screening Levels and Process Variations for ATR28XXD Series
Requirement
MIL-STD-883
Method
Temperature
Range
Element
Evaluation
Internal Visual
Temperature
Cycle
Constant
Acceleration
Burn-in
Final Electrical
(Group A)
Seal, Fine &
Gross
External
Visual
No
Suffix
-20 to +85°C
ES
Suffix
-55°C to +125°C
HB
Suffix
-55°C to +125°C
CH
Suffix
-55°C to +125°C
MIL-PRF-38534
2017
1010
∗
2001
Yes
Cond B
Yes
Cond C
Yes
Cond C
500g
Cond A
Cond A
1015
MIL-PRF38534
48hrs @ 85°C
25°C
48hrs @ 125°C
25°C
160hrs @ 125°C
-55, +25, +125°C
160hrs @ 125°C
-55, +25, +125°C
1014
∗
Cond A, C
Cond A, C
Cond A, C
2009
∗
Yes
Yes
Yes
* Per Commercial Standards
Available Standard Military Drawing (SMD) Cross Reference
Standardized
Military Drawing
Pin
5962-9462701
Vendor
CAGE
Code
52467
Vendor
Similar
Pin
ATR2812D
5962-9462801
52467
ATR2815D
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331
ADVANCED ANALOG: 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. 10/02
8
www.irf.com
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