IRF ATR2812TF/CH

PD-94551D
ATR28XXT SERIES
28V Input, Triple Output
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
Description
The ATR28XXT Series of DC/DC converters provide
30W of output power over the full military temperature
range with no derating. These devices are pin
compatible with the ATO series converters but offer
twice the maximum output power in a lower profile
package. A custom CMOS ASIC pulse width modulator
operating at a nominal switching frequency of 550KHz
combined with a unique magnetic feedback reduces
circuit complexity for enhanced reliability. These
converters provide 500V input to output isolation and
operate in highly efficient single forward mode.
The advanced feedback design and high operating
frequency provide an extremely wide bandwidth control
loop with high gain and phase margin. This results in
fast dynamic line and load response as well as superior
audio rejection. The control loop is compensated to
provide optimum performance over the full military
temperature range and over the 16V to 40V input voltage
range.
ATR
Features
n
n
n
n
n
n
n
n
n
n
30W Output Power
Flexible Output Loading
-55°C to +125°C Operation
Pin Compatible with ATO
0.410” Maximum Height
16V to 40VDC Input Range
500V Input to Output Isolation
High Audio Rejection
MIL-STD-704 Compatible
Load Fault Protection - Short Circuit and
Overload
n TTL level Compatible Synchronization
n Standard Microcircuit Drawings Available
These converters are protected against both continuous
output short circuits and output overload. Either load
fault condition will result in operating in a low power
dissipation foldback mode. The converters will shut
down for approximately 15ms, then attempt to restart.
This cycle will continue indefinitely unless the load fault
is corrected. Recovery to normal operation is automatic
upon removal of the load fault.
Manufactured in a facility full 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 limited
accomodated. Contact IR Santa Clara with specific
requirements.
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1
08/06/07
ATR28XXT Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input voltage
Power Output
Lead temperature
-0.5V to +50VDC
Internally limited, 37.5W typical
300°C
-65°C to +135°C
Storage temperature
Test
STATIC CHARACTERISTICS
OUTPUT
Voltage1
Current 1,2,3,4
Ripple
1,5
V RIP
VR LINE
1,3
VR LOAD
INPUT
Current
Ripple Current
V OUT
I OUT
REGULATION
Line 1,3
Load
Symbol
I IN
4
EFFICIENCY
ISOLATION
I RIP
E FF
ISO
Load Fault Power Dissipation 3
PD
Switching Frequency
SYNC Frequency Range
FS
F SYNC
Inhibit Open Circuit Voltage
Output Response to
Step transient
Load changes 7
Recovery Time Step
Step transient
Load changes 7,8
V OI
VO TLOAD
TT LOAD
Conditions
-55°C ≤ TC ≤ +125°C,
V IN = 28 V DC ±5%, C L =0,
unless otherwise specified
IOUT = 0 (main) +25°C
over temp. range
IOUT = 0 (dual)1 +25°C
over temp. range
V IN = 16, 28, and 40VDC
(main)
V IN = 16, 28, and 40VDC
(dual)1
V IN = 16, 28, and 40VDC
(dual)
BW = 20Hz to 2MHz (main)
V IN = 16, 28, and 40 VDC
BW = 20Hz to 2 MHz (dual)
ATR2812T
Min
Max
Min
Max
Units
4.95
4.90
±11.88
±11.76
100
5.05
5.10
±12.12
±12.24
4000
4.95
4.90
±14.85
±14.70
100
5.05
5.10
±15.15
±15.30
4000
V DC
V DC
V DC
V DC
mA
0.0
±625
0.0
±500
mA
60
60
mVp-p
40
40
mVp-p
V IN = 16, 28, and 40 VDC
P OUT = 0.5, 7.5, 15W (main)
V IN = 16, 28, and 40VDC
(dual)
P OUT = 1.2/1.5, 7.5 and 15W
(dual)
V IN = 16, 28, and 40 VDC
P OUT = 0.5, 7.5, 15W (main)
V IN = 16, 28, and 40 VDC
P OUT = 1.2/1.5, 7.5, and 15W
(dual)
IOUT = 0, inhibit (pin 8)
Tied to input return (pin 10)
IOUT = 0, inhibit (pin 8) =
open
IOUT = 3000mA (main)
P OUT = 15W (dual)
BW = 20Hz to 2MHz
IOUT = 3000mA (main) +25°C
P OUT = 15W (dual)
over temp. range
Input to output or any pin to
case
(except pin 8)at 500
TC=+25°C
Overload
Short circuit
50% load to/from 100% load
no load to/from 50% load
50% load to/from 100% load
No load to/from 50% load
50% load to/from 100% load
No load to 50% load
50% load to no load
ATR2815T
±25
±25
±60
±75
±50
±50
±60
±75
mV
15
75
15
75
mA
mA
50
50
mAp-p
75
75
72
72
100
100
500
500
14
9.0
600
700
9.0
-500
-1000
%
MΩ
500
500
14
9.0
600
700
W
KHz
KHz
13
9.0
13
V
+500
+1000
200
5.0
10
-500
-1000
+500
+1000
200
5.0
10
mVpk
µs
ms
ms
For Notes to Specifications, refer to page 3
2
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ATR28XXT Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
Absolute Maximum Ratings
Input voltage
Power Output
Soldering temperature
Temperature Range
-0.5V to +50VDC
Internally limited, 37.5W typical
300°C for 10 seconds
Operating case temperature
Storage case temperature
6
Test
Output Response to
Transient step9
Line changes10
Symbol
VOTLINE
Recovery Time8
Transient step9
Line changes10
Turn on Overshoot1
TTLINE
Turn on Delay 1, 11
TonD
Load Fault Recovery10
Device weight
TRLF
VTonOS
Conditions
-55°C ≤ TC ≤ +125°C,
VIN = 28 VDC ±5%, CL=0,
unless otherwise specified
Input step 16 from/to 40 VDC
IOUT = 3000mA (main)
POUT = 15W (dual)
Input step 16 from/to 40 VDC
IOUT = 3000mA (main)
POUT = 15W (dual)
IOUT = 0, and 3000mA (main)
POUT = 0, 15W (dual)
IOUT = 0, 3000mA (main)
POUT = 0, 15W (dual)
-55°C to +135°C
-65°C to +135°C
ATR2812T
Min
Max
ATR2815T
Min
Max
Units
±1500
±1500
mV pk
10
10
ms
1000
1000
mV pk
25
25
65
25
25
65
ms
ms
g
Notes to Specifications
1.
2.
3.
Tested at each output.
Parameter guaranteed byline and load regulation tests.
Although operation with no load is permissible, light loading on the main (+5V) output may cause the output voltage of the auxiliary
outputs (±12V or ±15V) to drop out of regulation. It is therefore recommended that at least 100mA or 20% of the output power,
whichever is greater, be taken from the main (+5V) output and at least 50mA (or ±12V: 1.2W, ±15V: 1.5W) of the output power is
taken from the auxiliary (±12V or ±15V) .
4. Total combined output power –30W.
5. Bandwidth guaranteed by design. Tested for 20KHz to 2MHz.
6. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the overload protection
circuit and is the condition of maximum power dissipation.
7. Load step transition time between 2.0µs and 10µs.
8. 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.
9. Input step transition time between 2.0µs to 10µs.
10. 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 the table.
11. 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 8) while power is applied to the input.
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3
ATR28XXT Series
Block Diagram
5 +Vout
+Input
1
Enable Input
8
Case
7
Sync Input
9
EMI
Filter
Tracking
Regulator
4 -Vout
Primary
Housekeeping
Supply
2
3 Output
Return
Drive
Error
Amp &
Ref
Pulse Width
FB
Modulator
CS
+5Vdc
Output
Input Return
10
Standard Microcircuit Drawing Equivalence Table
Standard Microcircuit
Drawing Number
5962-92159
5962-93158
4
Vendor Cage
Code
52467
52467
IR Standard
Part Number
ATR2815T
ATR2812T
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ATR28XXT Series
Mechanical Outlines
1.000
0.05
10
8
3
7
2
4
6
1
9
0.040 D X
0.26 L Pins
5
4 X 0.400
=1.600
1.95
2.700
Max
2.360
0.410
Max
1.350
Max
Pin Designation
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Pin #
Designation
1
+ Input
2
+5Vdc Output
3
Output Return
4
- Dual Output
5
+ Dual Output
6
NC
7
Case Ground
8
Enable Input
9
Sync Input
10
Input Return
5
ATR28XXT Series
Device Screening
Requirement
MIL-STD-883 Method
Temperature Range
Element Evaluation
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
Non-Destructive
Bond Pull
Internal Visual
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
d
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
c
Notes:
 Best commercial practice
‚ Sample tests at low and high temperatures
ƒ -55°C to +105°C for AHE, ATO, ATW
Part Numbering
ATR 28 15 T F /CH
Model
Screening Level
Input Voltage
Nominal
No Suffix, ES, HB, CH
28 = 28V
Output Voltage
12 = 5V ±12V
15 = 5V ±15V
(Please refer to Screening Table)
Package Style
F = Flange
Blank = Non-Flanged
Output
T = Triple
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. 08/2007
6
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