IRF AHE2812D Hybrid-high reliability dc/dc converter Datasheet

PD-94555B
AHE28XXD SERIES
28V Input, Dual Output
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
Description
The AHE 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 dual
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.
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. Contact IR Santa Clara for special
requirements.
www.irf.com
AHE
Features
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
17V to 40VDC Input Range
28VDC Nominal Input
± 5V, ±12V and ±15V Outputs Available
Indefinite Short Circuit and Overload
Protection
3
12.9W/in Power Density
15W Output Power
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 82%
Shutdown from External Signal
Military Screening
314,000 hour MTBF at 85°C (AUC)
Standard Microcircuit Drawings Available
1
01/08/07
AHE28XXD Series
Specifications
AHE2805D
Absolute Maximum Ratings
Input voltage
-0.5V to +50VDC
Soldering temperature
300°C for 10 seconds
Operating case temperature
-55°C to +125°C
Storage case temperature
-65°C to +135°C
Table I. Electrical Performance Characteristics
Test
Output voltage
Output current
9, 11
Output ripple voltage
Output power
9
Line
10
Regulation
Load
9
Regulation
8, 9
4, 9, 11
Symbol
Conditions
-55°C ≤ Tc ≤+125°C
Vin = 28 Vdc ±5%, CL = 0
Unless otherwise specified
VOUT
IOUT = 0
IOUT
VIN = 17, 28, and 40 V dc
VRIP
VIN = 17, 28, and 40 V dc,
B.W. = DC to 2MHz
VIN =17,28, and 40 V dc
VIN = 17, 28, and 40 V dc,
Iout = 0, ±313, and ±625mA
VIN = 17, 28, and 40 V dc,
IOUT = 0, ±313,and ±625
mA
IOUT = 0, inhibit (pin 2)
tied to input return (pin 10)
IOUT = 0,
inhibit (pin 2) = open
IOUT = ±625mA
B.W. = DC to 2MHz
POUT
VRLINE
VRLOAD
Input current
IIN
Input ripple current
8
IRIP
PD
IOUT = ±625mA
TC = +25°C
Input to output or any pin
to case (except pin 8)
at 500V dc Tc = +25ºC
No effect on dc
performance,
Tc = +25ºC
3
Overload, TC = +25°C
FS
Short circuit, TC = +25°C
IOUT = ±625mA
VOTLOAD
50% load to/from100%load
Efficiency
EFF
Isolation
ISO
Capacitive load
6, 12
CL
Power dissipation
load fault
Switching frequency
9
Output response to step
7
transient load changes
No load to/from 50% load
Group A
Subgroups
Device
Types
Limits
1
2,3
1,2,3
All
All
1,2,3
All
1,2,3
1
2,3
1,2,3
All
All
All
25
50
110
1,2,3
All
18
Min
±4.95
±4.90
0.0
Unit
Max
±5.05
±5.10
±625
mA
60
mVp-p
15
V
W
mV
mV
mA
40
1,2,3
All
1
All
80
%
1
All
100
MΩ
4
All
200
µF
1
All
6.0
W
1
4,5,6
4
5,6
4
5,6
50
01
02
03
All
225
225
250
-300
6.0
275
245
275
+300
All
-450
-500
-750
+450
+500
+750
mAp-p
KHz
mVpk
For Notes to Specifications, refer to page 3
2
www.irf.com
AHE28XXD Series
Table I. Electrical Performance Characteristics - continued
Test
Symbol
Conditions
-55° ≤Tc ≤+125°C
Vin = 28 Vdc ±5%, CL= 0
unless otherwise
specified
TTLOAD
50% load to/from 100%
load
AHE2805D
Group A
Subgroups
Device
Types
Limits
4
All
Max
70
5,6
4,5,6
4,5,6
4,5,6
All
All
All
100
1500
5.0
1200
ms
mVpk
Min
Recovery time step
transient load
1, 7
changes
Unit
µs
Output response
transient step line
5, 12
changes
VOTLINE
No load to 50% load
50% load to no load
Input step 17 to 40V dc
Recovery time
transient step
1, 5, 12
line changes
TTLINE
Input step 40 to 17V dc
Input step 17 to 40V dc
4,5,6
4,5,6
All
All
-1500
4.0
ms
VTonOS
TonD
Input step 40 to 17V dc
IOUT = 0 and ±625mA
IOUT = 0 and ±625mA
4,5,6
4,5,6
4,5,6
All
All
All
4.0
600
10
mVpk
ms
4,5,6
All
10
ms
Turn on overshoot
2, 9
Turn on delay
9
Load fault recovery
12
TrLF
Notes to Specifications
1 Recovery time is measured from the initiation of the transient to where V OUT has returned to within ±0.1 % of V OUT at 50 % load.
2 Turn on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the
inhibit pin (pin 2) while power is applied to the input.
3 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.
4 Total power at both outputs. For operation at 16V dc input, derate output power by 33 %.
5 Input step transition time between 2.0µs and 10µs.
6 Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess
of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry,
appearing as a short circuit during turn-on.
7 Load step transition time between 2.0µs and 10µs.
8 Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz.
9 Tested at each output.
10 When operating with unbalanced loads, at least 25 % of the load must be on the positive output to maintain regulation.
11 Parameter guaranteed by line and load regulation tests.
12 Parameter shall be tested as part of design characterization and after design or process changes. Thereafter parameters shall be
guaranteed to the limits specified in Table I.
www.irf.com
3
AHE28XXD Series
Specifications
AHE2812D
Absolute Maximum Ratings
Input voltage
-0.5V to +50VDC
Soldering temperature
300°C for 10 seconds
Operating case temperature
-55°C to +125°C
Storage case temperature
-65°C to +135°C
Table II. Electrical Performance Characteristics
Test
Output voltage
Output current
9, 11
Output ripple voltage
Output power
9
Line
10
Regulation
Load
9
Regulation
8, 9
4, 9, 11
Symbol
Conditions
-55°C ≤ Tc ≤+125°C
Vin = 28 Vdc ±5%, CL = 0
Unless otherwise specified
VOUT
IOUT = 0
IOUT
VIN = 17, 28, and 40 V dc
VRIP
VIN = 17, 28, and 40 V dc,
B.W. = DC to 2MHz
VIN =17,28, and 40 V dc
VIN = 17, 28, and 40 V dc,
Iout = 0, ±313, and ±625mA
VIN = 17, 28, and 40 V dc,
IOUT = 0, ±313,and ±625
mA
IOUT = 0, inhibit (pin 2)
tied to input return (pin 10)
IOUT = 0,
inhibit (pin 2) = open
IOUT = ±625mA
B.W. = DC to 2MHz
POUT
VRLINE
VRLOAD
Input current
IIN
Input ripple current
8
IRIP
PD
IOUT = ±625mA
TC = +25°C
Input to output or any pin
to case (except pin 8)
at 500V dc Tc = +25ºC
No effect on dc
performance,
Tc = +25ºC
3
Overload, TC = +25°C
FS
Short circuit, TC = +25°C
IOUT = ±625mA
VOTLOAD
50% load to/from100%load
Efficiency
EFF
Isolation
ISO
Capacitive load
6, 12
CL
Power dissipation
load fault
Switching frequency
9
Output response to step
7
transient load changes
No load to/from 50% load
4
Group A
Subgroups
Device
Types
1
2,3
1,2,3
All
All
1,2,3
All
1,2,3
1
2,3
1,2,3
All
All
1,2,3
Limits
Min
±11.88
±11.70
0.0
Unit
Max
±12.12
±12.24
±625
mA
60
mVp-p
15
V
W
mV
All
30
60
120
mV
All
18
mA
40
1,2,3
All
1
All
80
%
1
All
100
MΩ
4
All
200
µF
1
All
6.0
W
1
4,5,6
4
5,6
4
5,6
50
01
02
03
All
225
225
250
-300
6.0
275
245
275
+300
All
-450
-500
-750
+450
+500
+750
mAp-p
KHz
mVpk
www.irf.com
AHE28XXD Series
Table II. Electrical Performance Characteristics - continued
Test
Symbol
Conditions
-55° ≤Tc ≤+125°C
Vin = 28 Vdc ±5%, CL= 0
unless otherwise
specified
TTLOAD
50% load to/from 100%
load
AHE2812D
Group A
Subgroups
Device
Types
Limits
4
All
Max
70
5,6
4,5,6
4,5,6
4,5,6
All
All
All
100
1500
5.0
1200
ms
mVpk
Min
Recovery time step
transient load
1, 7
changes
Unit
µs
Output response
transient step line
5, 12
changes
VOTLINE
No load to 50% load
50% load to no load
Input step 17 to 40V dc
Recovery time
transient step
1, 5, 12
line changes
TTLINE
Input step 40 to 17V dc
Input step 17 to 40V dc
4,5,6
4,5,6
All
All
-1500
4.0
ms
VTonOS
TonD
Input step 40 to 17V dc
IOUT = 0 and ±625mA
IOUT = 0 and ±625mA
4,5,6
4,5,6
4,5,6
All
All
All
4.0
600
10
mVpk
ms
4,5,6
All
10
ms
Turn on overshoot
2, 9
Turn on delay
9
Load fault recovery
12
TrLF
Notes to Specifications
1 Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±0.1% of V OUT at 50 % load.
2 Turn on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the
inhibit pin (pin 2) while power is applied to the input.
3 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.
4 Total power at both outputs. For operation at 16V dc input, derate output power by 33 %.
5 Input step transition time between 2.0µs and 10µs.
6 Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess
of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry,
appearing as a short circuit during turn-on.
7 Load step transition time between 2.0µs and 10µs.
8 Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz.
9 Tested at each output.
10 When operating with unbalanced loads, at least 25 % of the load must be on the positive output to maintain regulation.
11 Parameter guaranteed by line and load regulation tests.
12 Parameter shall be tested as part of design characterization and after design or process changes. Thereafter parameters shall be
guaranteed to the limits specified in Table II.
www.irf.com
5
AHE28XXD Series
Specifications
AHE2815D
Absolute Maximum Ratings
Input voltage
-0.5V to +50VDC
Soldering temperature
300°C for 10 seconds
Operating case temperature
-55°C to +125°C
Storage case temperature
-65°C to +135°C
Table III. Electrical Performance Characteristics
Test
Output voltage
Output current
9, 11
Output ripple voltage
8, 9
4, 9, 11
Output power
Line
9, 10
Regulation
Load
9
Regulation
Symbol
Conditions
-55°C ≤ Tc ≤+125°C
Vin = 28 Vdc ±5%, CL = 0
Unless otherwise specified
VOUT
IOUT = 0
IOUT
VIN = 17, 28, and 40 V dc
VRIP
VIN = 17, 28, and 40 V dc,
B.W. = dc to 2 mHz
VIN =17,28, and 40 V dc
VIN = 17, 28, and 40 V dc,
Iout = 0, ±250, and ±500mA
VIN = 17, 28, and 40 V dc,
IOUT = 0, ±250,and ±625
mA
IOUT = 0, inhibit (pin 2)
tied to input return (pin 10)
IOUT = 0,
inhibit (pin 2) = open
IOUT = ±500mA
B.W. = DC to 2MHz
POUT
VRLINE
VRLOAD
Input current
IIN
Input ripple current
8
IRIP
PD
IOUT = ±500mA
TC = +25°C
Input to output or any pin
to case (except pin 8)
at 500V dc Tc = +25°C
No effect on dc
performance, Tc = +25°C
3
Overload, TC = +25°C
FS
IOUT = ±500mA
VOTLOAD
50% load to/from100%load
Efficiency
EFF
Isolation
ISO
Capacitive load
6, 12
Power dissipation
load fault
9
Switching frequency
Output response to
step transient load
7
changes
CL
No load to/from 50% load
Refer Notes to Specifications, refer to page 5
6
Group A
Subgroups
Device
Types
1
2,3
1,2,3
All
1,2,3
All
1,2,3
1
2,3
1,2,3
All
All
1,2,3
All
Limits
Min
±14.85
±14.70
0.0
Unit
Max
±15.15
±15.30
±500
mA
60
mVp-p
15
V
W
mV
All
35
75
150
mV
All
18
mA
40
1,2,3
All
1
All
80
%
1
All
100
MΩ
4
All
200
µF
1
All
6.0
W
4,5,6
01
02
03
All
225
225
250
-300
275
245
275
+300
KHz
-450
-500
-750
+450
+500
+750
mVpk
All
4
5,6
4
5,6
50
mAp-p
www.irf.com
AHE28XXD Series
Table III. Electrical Performance Characteristics - continued
Test
Symbol
AHE2815D
Conditions
-55°C ≤Tc ≤+125°C
Vin = 28 Vdc ±5%, CL = 0
unless otherwise specified
Group A
Subgroups
Device
Types
TTLOAD
50% load to/from 100% load
4
All
Max
70
µs
Output response
transient step
5, 12
line changes
VOTLINE
No load to 50% load
50% load to no load
Input step 17 to 40V dc
5,6
4,5,6
4,5,6
4,5,6
All
All
All
100
1500
5.0
1500
ms
mV pk
Recovery time
transient
step line
1, 5, 12
changes
TTLINE
Input step 40 to 17V dc
Input step 17 to 40V dc
4,5,6
4,5,6
All
All
-1500
4.0
ms
Turn on
9
overshoot
2, 9
Turn on delay
VTonOS
Input step 40 to 17V dc
IOUT = 0 and ±500mA
4,5,6
4,5,6
All
All
4.0
600
mV pk
TonD
IOUT = 0 and ±500mA
4,5,6
All
10
ms
4,5,6
All
10
ms
Limits
Min
Recovery time
step transient
1, 7
load changes
Load fault
12
recovery
TrLF
Unit
Notes to Specifications
1 Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±0.1 % of VOUT at 50 % load.
2 Turn on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the
inhibit pin (pin 2) while power is applied to the input.
3 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.
4 Total power at both outputs. For operation at 16Vdc input, derate output power by 33 %.
5 Input step transition time between 2.0µs and 10µs.
6 Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess
of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry,
appearing as a short circuit during turn-on.
7 Load step transition time between 2.0µs and 10µs.
8 Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz.
9 Tested at each output.
10 When operating with unbalanced loads, at least 25 % of the load must be on the positive output to maintain regulation.
11 Parameter guaranteed by line and load regulation tests.
12 Parameter shall be tested as part of design characterization and after design or process changes. Thereafter parameters shall be
guaranteed to the limits specified in Table III.
www.irf.com
7
AHE28XXD Series
Block Diagram
3 +Vout
+Input
1
EMI
Filter
4 Output
Return
Inhibit
Input
Regulator
2
Sync
5 -Vout
Drive 1
Pulse Width
Modulator FB
9
Error Amp
& Reference
Drive 2
Input
Return
10
Application Information
International Rectifier offers an option that provides
synchronization of multiple AHE/ATW converters, thus
eliminating this type of noise.
Inhibit Function
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 optional EMI filter (AFC461) will reduce the input ripple
current to levels below the limits imposed by MIL-STD-461
CEO3.
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).
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 (pin 9) 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.
Typical Synchronization Connection
+ In
Return
AFC461
or
AFV461
Output
+ In
Case
Return
Output
AHE28xxS
Return
Return
MSTR
System
Bus
+ In
AHE28xxS Output
or Other
Return Compatable Return
Case
SLV
Output
+ In
Case
AHE28xxS
Return
Return
SLV
8
www.irf.com
AHE28XXD Series
Mechanical Outlines
Flanged
Ø 0.162
2 Holes
Non-Flanged
0.050
0.800
6
10
8
7
4
5
4 X 0.400
=1.600
3
2.110
Max
2
2.560
1
2.880
Max
9
0.040 D X
0.26 L Pins
2.110
0.495
1.110
0.495
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
NC or Sync.
10
Input Return
Standard Microcircuit Drawing Equivalence Table
Standard Microcircuit
Drawing Number
5962-92040
5962-91575
www.irf.com
Vendor Cage
Code
52467
52467
IR Standard
Part Number
AHE2812D
AHE2815D
9
AHE28XXD Series
Device Screening
Requirement
MIL-STD-883 Method
Temperature Range
No Suffix
ES
d
-20°C to +85°C -55°C to +125°C
Element Evaluation
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
Internal Visual
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
PIND
2020
N/A
N/A
N/A
N/A
48 hrs@hi temp
Non-Destructive
Bond Pull
Burn-In
1015
N/A
Final Electrical
MIL-PRF-38534
25°C
( Group A )
& Specification
25°C
d
160 hrs@125°C 160 hrs@125°C
-55°C, +25°C,
-55°C, +25°C,
+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
External Visual
2009
c
N/A
N/A
N/A
Yes
Yes
Yes
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 D F /CH - MSTR
Model
Input Voltage
Nominal
28 = 28V
Output Voltage
05 = ±5V
12 = ±12V
15 = ±15V
Sync Option
MSTR = Master
SLV = Slave
Omit for Standard
Screening Level
(Please refer to Screening Table)
No Suffix, ES, HB, CH
Package Option
F = Flange
Blank = Non-Flanged
Output
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
10
www.irf.com