IRF AHE2812SF/ES-SLV Hybrid-high reliability dc/dc converter Datasheet

PD-94554B
AHE28XXS SERIES
28V Input, Single Output
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
Description
The AHE28XXS 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 +5V, +12V and +15V
single outputs to satisfy a wide range of requirements.
The circuit design incorporates a pulse width modulated
push-pull topology operating in the feed-forward mode
at a nominal switching frequency of 250KHz. 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.
Manufactured in a facility fully qualified to MIL-PRF38534, 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. Extensive computer simulation using
complex modeling enables rapid design modification
to be provided. Contact IR Santa Clara with specific
requirements.
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AHE
Features
n
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n
n
n
n
n
n
n
n
n
n
n
n
17V to 40VDC Input Range (28VDC Nominal)
5V, 12V and 15V Outputs Available
Indefinite Short Circuit and Overload Protection
3
17 W/in Power Density
15W and 20W Output Power Models
Fast Loop Response for Superior Transient
Characteristics
Operating Temperature Range from -55°C to
+125°C Available
Popular Industry Standard Pin-Out
Resistance Seam Welded Case for Superior
Long Term Hermeticity
Efficiencies up to 84%
Shutdown from External Signal
Military Screening
325,000 hour MTBF at 85°C (AUC)
Standard Microcircuit Drawings Available
1
01/08/07
AHE28XXS Series
Specifications
TCASE = -55°C to +85°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input Voltage
Power Output
1
-0.5V to +50VDC
Internally limited, 17.5W typ. for AHE2805S, 22.5W typ. for AHE2812S and AHE2815S
Soldering Temperature
Temperature Range
Parameter
1
300°C for 10 seconds
Operating Temperature
-55°C to +125°C
Storage Case Temperature
-65°C to +135°C
Conditions
-55°C ≤ Tc ≤ +85°C
Vin = 28 Vdc ±5%,C L = 0
Unless otherwise specified
AHE2812S
AHE2805S
AHE2815S
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Units
4.90
0.0
5.00
5.10
3000
60
11.76
0.0
12.00
15.00
30
12.24
1667
60
14.70
0.0
20
30
15.30
1333
60
VDC
mADC
mVp-p
5.00
5.05
11.88
20
12.00
12.12
14.85
20
15.00
15.15
VDC
W
±0.5
±0.5
±1.0
±1.0
±0.5
±0.5
±1.0
±1.0
±0.5
±0.5
±1.0
±1.0
%
28
8.0
40
18
35
50
28
8.0
40
18
35
50
28.0
8.0
40
18
35
50
Static Characteristic
OUTPUT
Voltage
Current
Ripple
Accuracy
1
Power
REGULATION
Line
Load
INPUT
4
Voltage Range
Current
Ripple Current
Efficiency
Capacitive Load
Load fault power
4
dissipation
Isolation
VIN=17 to 40 VDC
IOUT=0 to Full Load
Full Load, DC to 1MHz
TCASE = 25°C, IOUT = 0
4.95
15
VIN = 17 to 40 VDC
IOUT = to Full Load
17
Inhibited
No Load
Full Load
TCASE = +25°C
Half Load to Full Load
No effect on performance
20
80
500
82
Recovery
2
Step Line Changes
Output
Transient
2
Recovery
Turn-On
Overshoot Delay3
25
79
200
83
6.0
17
25
80
200
84
6.0
VDC
mADC
mADC
mV p-p
%
µF
6.0
W
Input to Output @ 500Vdc
100
Dynamic
Characteristic
Step Load Changes
Output
Transient
17
100
100
MΩ
50% Load 100% Load
No Load 50% Load
50% Load No Load
50% Load 100% Load
No Load 50% Load
50% Load No Load
±150
-300
+300
25
500
7.0
±200
-400
+400
25
500
7.0
±200
-400
+400
25
500
7.0
mVpk
mVpk
mVpk
µs
µs
msec
Input step 17 to 40VDC
Input step 40 to 17VDC
Input step 17 to 40VDC
Input step 40 to 17VDC
VIN = 17 to 40VDC
IOUT = 0 to Full load
+180
-600
400
400
+180
-600
400
400
+180
-600
400
400
mVpk
mVpk
µs
µs
Load Fault
4
Recovery
VIN = 17 to 40VDC
0
8.0
8.0
Weight
Standard Package
Flange Package
55
58
500
14
14
300
8.0
8.0
55
58
600
14
14
300
8.0
8.0
500
14
14
mVpk
ms
ms
55
58
g
Notes to Specifications
1. Above +85°C case temperature, derate output power linearly to 0 and maximum input voltage linearly to 42V at 115°C case.
2. Recovery time is measured from the initiation of the transient to where V OUT has returned to within ±1.0% of VOUT at 50% load.
See typical waveforms.
3. Turn-on delay time measurement is for either an application of power at the input or a signal at the shutdown pin.
4. For operation at 16VDC, derate output power by 33%.
2
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AHE28XXS Series
Specifications
TCASE = -55°C to +105°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input Voltage
Power Output
5
-0.5V to +50VDC
Internally limited, 17.5W typ. for AHE2805S/ES, 22.5W typ. for AHE2812S/ES and AHE2815S/ES
Soldering Temperature 300°C for 10 seconds
Temperature Range
Parameter
1
Operating Temperature
-55°C to +125°C
Storage Case Temperature
-65°C to +135°C
Conditions
-55°C ≤ Tc ≤ +105°C
Vin = 28 Vdc ±5%,CL = 0
Unless otherwise specified
AHE2812S/ES
AHE2805S/ES
AHE2815S/ES
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Units
4.90
0.0
5.00
11.76
0.0
12.00
30
12.24
1667
60
14.70
0.0
15.00
20
5.10
3000
60
30
15.30
1333
60
VDC
mADC
mVp-p
4.95
15
5.00
5.05
11.88
20
12.00
12.12
14.85
20
15.00
15.15
VDC
W
±0.5
±0.5
±1.0
±1.0
±0.5
±0.5
±1.0
±1.0
±0.5
±0.5
±1.0
±1.0
%
28
8.0
40
18
35
50
28
8.0
40
18
35
50
28
8.0
40
18
35
50
Static Characteristic
OUTPUT
Voltage
Current
Ripple
Accuracy
Power1
REGULATION
Line
Load
INPUT
Voltage Range4
Current
Ripple Current
Efficiency
Capacitive Load
Load fault power
dissipation4
Isolation
VIN=17 to 40 VDC
IOUT=0 to Full Load
Full Load, DC to 1MHz
TCASE = 25°C, IOUT = 0
VIN = 17 to 40 VDC
IOUT = 0 to Full Load
Inhibited
No Load
Full Load
TCASE = +25°C
Half load to Full load
No effect on performance
17
20
78
500
82
Recovery2
25
79
200
83
6.0
17
25
80
200
84
6.0
VDC
mADC
mADC
mV p-p
%
µF
6.0
W
Input to Output @ 500Vdc
100
Dynamic
Characteristic
Step Load Changes
Output
Transient
17
100
100
MΩ
50% Load 100% Load
No Load 50% Load
50% Load No Load
50% Load 100% Load
No Load 50% Load
50% Load No Load
±150
-300
+300
25
500
7.0
±200
-400
+400
25
500
7.0
±200
-400
+400
25
500
7.0
mVpk
mVpk
mVpk
µs
µs
ms
Input step 17 to
Input step 40 to
Input step 17 to
Input step 40 to
+180
-600
400
400
+180
-600
400
400
+180
-600
400
400
mVpk
mVpk
µs
µs
Step Line Changes
Output
Transient
Recovery2
TURN –ON
Overshoot
Delay3
40VDC
17VDC
40VDC
17VDC
VIN = 17 to 40VDC
IOUT = 0 to Full Load
0
8.0
500
14
300
8.0
600
14
300
8.0
750
14
mVpk
ms
Load Fault Recovery4
VIN = 17 to 40VDC
8.0
14
8.0
14
8.0
14
ms
Weight
Standard Package
Flange Package
60
65
60
65
60
65
g
Notes to Specifications
1.
2.
3.
4.
5.
Above +105°C case temperature, derate output power linearly to 0 at 125°C case.
Recovery time is measured from the initiation of the transient to where V OUT has returned to within ±1.0% of V OUT at 50% load.
See typical waveforms.
Turn-on delay time measurement is for either an application of power at the input or a signal at the shutdown pin.
For operation at 16VDC, derate output power by 33%.
Above +85°C case temperature, derate maximum input voltage linearly to 33V at +125°C case.
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3
AHE28XXS Series
Specifications
TCASE = -55°C to +105°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input Voltage
Power Output
1
-0.5V to +50VDC
Internally limited, 17.5W typ. for AHE2805S/HB & CH, 22.5W typ. for AHE281XS/HB & CH
Soldering Temperature 300°C for 10 seconds
Temperature Range
Parameter
1
Operating Temperature
-55°C to +125°C
Storage Case Temperature
-65°C to +135°C
Conditions
-55°C ≤ Tc ≤ +125°C
Vin = 28 Vdc ±5%,CL = 0
Unless otherwise specified
AHE2805S/HB&CH
AHE2812S/HB&CH
AHE2815S/HB&CH
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Units
4.90
0.0
5.00
5.10
3000
60
11.76
0.0
12.00
30
12.24
1667
60
14.70
0.0
15.00
20
30
15.30
1333
60
VDC
mADC
mVp-p
4.95
15
5.00
5.05
11.88
20
12.00
12.12
14.85
20
15.00
15.15
VDC
W
Static Characteristic
OUTPUT
Voltage
Current
Ripple
Accuracy
Power1
REGULATION
Line
Load
INPUT
Voltage Range4
Current
Ripple Current
Efficiency
Capacitive Load
Load fault power
dissipation5
Isolation
Dynamic
Characteristic
Step Load Changes
Output TC =25°C
Transient
Recovery2
Step Line Changes
Output TC = 25°C
Transient
Recovery2
TURN –ON
Overshoot
Delay3
Load Fault Recovery4
Weight
VIN=17 to 40 VDC
IOUT=0 to Full Load
Full Load, DC to 1MHz
TCASE = 25°C, IOUT = 0
VIN = 17 to 40 VDC
TCASE = 25°C
IOUT = 0 to Full Load
5.0
17
Inhibited
No Load
Full Load
TCASE = +25°C
No effect on performance
Short Circuit TC =25°C
Overload TC = 25°C
Input to Output @ 500Vdc
30
35
mV
10
80
500
28
8.0
20
82
1000
50
50
40
18
35
50
17
80
200
28
8.0
25
83
1000
4.5
6.0
100
120
50
40
18
35
50
17
80
200
150
28
8.0
25
84
1000
4.5
6.0
100
40
18
35
50
4.5
6.0
100
VDC
mADC
mADC
mV p-p
%
µF
W
MΩ
50% Load 100% Load
No Load 50% Load
50% Load No Load
50% Load 100% Load
No Load 50% Load
50% Load No Load
±150
-300
+300
25
100
±300
-500
+500
70
200
5.0
±200
-400
+400
25
500
±300
-500
+500
70
1500
5.0
±200
-400
+400
25
500
±300
-500
+500
70
1500
5.0
mVpk
mVpk
mVpk
µs
µs
ms
Input step 17 to 40VDC
Input step 40 to 17VDC
Input step 17 to 40VDC
Input step 40 to 17VDC
+180
-600
400
400
+300
1000
800
800
+180
-600
400
400
+500
-1500
800
800
+180
-600
400
400
+500
-1500
800
800
mVpk
mVpk
µs
µs
0
8.0
8.0
55
58
550
10
10
300
8.0
8.0
55
58
600
10
10
300
8.0
8.0
500
10
10
55
58
mVpk
ms
ms
g
VIN = 17 to 40VDC
IOUT = 0 to Full Load
VIN = 17 to 40VDC
Standard Package
Flange Package
Notes to Specifications
1.
2.
Above +125°C case temperature, derate output power linearly to 0 at 135°C case.
Recovery time is measured from the initiation of the transient to where V OUT has returned to within ±1.0% of V OUT at 50% load.
See typical waveforms.
Turn-on delay time measurement is for either an application of power at the input or a signal at the shutdown pin.
For operation at 16VDC, derate output power by 33%.
An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit
protection and is the condition of maximum power dissipation.
3.
4.
5.
4
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AHE28XXS Series
Block Diagram
5 +Vout
+Input
1
EMI
Filter
Inhibit
Input
2
Sync
4
Output
Return
Drive 1
Pulse Width
Modulator FB
9
Error
Amp &
Ref
Drive 2
3 VADJ
Input
Return
10
Application Information
Device Synchronization
Inhibit Function
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). Intenational
Rectifier offers an option, which provides synchronization
of multiple AHE/ATW/ATO type converters, thus
eliminating this type of noise.
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 CEO.
Output Voltage Adjustment (AHE2805 only)
Typical Synchronization Connection
The output voltage of the AHE2805S converter can be
adjusted upward by connecting an appropriate resistor
between Output Adjust (Pin 3) and Output Common
(Pin 4) as shown in Table 1 below.
+ In
Return
AFC461
or
AFV461
Output
+ In
Case
Return
Return
AHE28xxS
- MSTR
Output
Return
MSTR
Table 1 Output adjustment resistor values
:
Resistance Pin 3 to 4 ( )
None
390K
145K
63K
22K
0
Output Voltage Increases (%)
0
+1%
+2%
+3%
+4%
+5%
+ In
Case
System
Bus
Return
AHE28xxD
-SLV
+Output
Return
-Output
SLV
+ In
Case
Return
AHE28xxS
-SLV
Output
Return
SLV
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5
AHE28XXS Series
To take advantage of this capability, the system designer
must assign one of the converters as the master. Then,
by definition, the remaining converters become slaves and
will operate at the masters’ switching frequency.
The user should be aware that the synchronization system
is fail-safe; that is, the slaves will continue operating should
the master frequency be interrupted for any reason. The
layout must be such that the synchronization output (pin9)
of the master device is connected to the synchronization
input (pin 9) of each slave device. It is advisable to keep
this run short to minimize the possibility of radiating the
250KHz switching frequency.
The appropriate parts must be ordered to utilize this
feature. After selecting the converters required for the
system, a MSTR suffix is added for the master converter
part number and a SLV suffix is added for slave part number.
See Part Number section.
Standard Microcircuit Drawing Equivalence Table
Standard Microcircuit
Drawing Number
5962-89683
5962-91580
5962-91625
6
Vendor Cage
Code
52467
52467
52467
IR Standard
Part Number
AHE2805S
AHE2812S
AHE2815S
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AHE28XXS Series
Mechanical Outlines
Non-Flanged
Flanged
0.050
0.800
6
10
8
7
4
5
4 X 0.400
=1.600
3
1.110
2.110
Max
2
2.560
1
2.880
Max
9
0.040 D X
0.26 L Pins
Ø 0.162
2 Holes
0.495
Max
2.110
0.495
Pin Designation
Pin #
Designation
1
+ Input
2
Inhibit Input
3
Output Adjust *
4
Output Return
5
+ Output
6
NC
7
NC
8
Case Ground
9
NC or Sync.
10
Input Return
* AHE2805S only. AHE2812S / 2815S have NC on Pin 3
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7
AHE28XXS Series
Device Screening
Requirement
MIL-STD-883 Method
Temperature Range
Element Evaluation
Non-Destructive
Bond Pull
Internal Visual
No Suffix
ES
d
-20°C to +85°C -55°C to +125°C
HB
e -55°C to +125°C
CH
-55°C to +125°C
MIL-PRF-38534
N/A
N/A
N/A
Class H
2023
N/A
N/A
N/A
N/A
2017
c
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 hrs@hi temp
Final Electrical
MIL-PRF-38534
25°C
25°C
d
160 hrs@125°C 160 hrs@125°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
c
Notes:
 Best commercial practice
‚ Sample tests at low and high temperatures
ƒ -55°C to +105°C for AHE, ATO, ATW
Part Numbering
AHE 28 15 S F /CH - MSTR
Model
Input Voltage
Nominal
Sync Option
MSTR = Master
SLV = Slave
Omit for Standard
Screening Level
(Please refer to Screening Table)
28 = 28V
No Suffix, ES, HB, CH
Output Voltage
Package Option
05 = 5V
12 = 12V
15 = 15V
Output
F = Flange
Blank = Non-Flanged
S = Single
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
8
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