AHF2815T/CH [INFINEON]
HYBRID-HIGH RELIABILITY DC/DC CONVERTER; 混合高可靠性DC / DC转换器
| 型号： | AHF2815T/CH |
| 厂家： | 
Infineon |
| 描述： | HYBRID-HIGH RELIABILITY DC/DC CONVERTER |
| 文件： | 总5页 (文件大小：144K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PD - 94542A
AHF2815T SERIES
28V Input, Triple Output
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
Description
The AHF2815T Series of DC/DC converters provide
8W of power and an extended temperature range for
use in military and industrial applications. Designed to
the nominal input requirements of MIL-STD-704, these
devices have nominal 28VDC inputs with +5V and ±15V
triple outputs to satisfy a wide range of requirements.
The basic circuit utilizes a pulse width modulated, feed
forward topology at a nominal switching frequency of
550KHz. Input to output isolation is achieved through
the use of transformers in the forward and feedback
circuits.
AHF
Features
ꢀ 16V to 40VDC Input Range (28VDC Nominal)
ꢀ 5V, ±15V Output
ꢀ Infinite Short Circuit and Overload Protection
ꢀ 8W 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
ꢀ Efficiency Up to 75%
ꢀ Shutdown from External Signal
ꢀ 400,000 Hour MTBF at 85%
The proprietary magnetic feedback circuit provides for
an extremely wide bandwidth control loop with a high
phase margin. The closed loop frequency response of
this converter family extends to approximately 50KHz,
resulting in superior line and load transient characteristics.
This feedback method is also inherently temperature
and radiation insensitive. This gives the AHF Series
an important advantage over converters that incorporate opto-
couplers in their design.
ꢀ Constant Switching Frequency (550KHz Nominal)
ꢀ Standard Microcircuit Drawing Available
Manufactured in a facility 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.
Contact IR Santa Clara for special requirements.
www.irf.com
1
01/10/07
AHF2815T Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified 7
Typical Characteristics
Conversion frequency
Temperature Range1
550KHz
Recommended Operating temperature
Storage case temperature
-55°C to +125°C
-65°C to +135°C
Test
Symbol
Conditions
Unit
-55°C Tc +125°C
AHF2815T
Limits
≤
≤
Vin = 28 Vdc ±5%, CL = 0
unless otherwise specified7
Min
Max
STATIC
CHARACTERISTICS
Output voltage1
VOUT
IOUT = 0 (main)
IOUT = 0 (dual)1
TC = 25°C
Over Temp
TC = 25°C
Over Temp
4.95
4.90
±14.50
14.35
120
0.0
5.05
5.10
V
V
V
±15.50
V
15.65
±
±
Current1,2,3
IOUT
VRIP
VIN = 16, 28, and 40 Vdc (main)
VIN = 16, 28, and 40 Vdc (dual)
VIN = 16, 28, and 40 Vdc
BW = DC to 2 MHz (main)
VIN = 16, 28, and 40 VDC
BW = DC to 2 MHz (dual)
VIN = 16, 28, and 40 Vdc (main)
(+dual)
mA
mA
mV p-p
1200
66.7
60
±
Ripple Voltage1,4
mV p-p
80
Power1,2,3
POUT
W
W
W
W
5.0
1.5
1.5
8.0
(-dual)
(total)
REGULATION
Line1,3
VRLINE
VIN = 16, 28, and 40 VDC
IOUT = 120, 600,1200 mA (main)
25
IOUT = 0, 33.4, 66.7 mA (dual)
TC = 25 C
Over Temp
35
±
±
±
°
mV
mA
±75
Load1,3
VRLOAD
VIN = 16, 28, and 40 VDC
IOUT = 120, 600, 1200mA (main)
50
±75
15
IOUT = 0, 33.4, 66.7 mA (dual)
±
±
Input current
IIN
IOUT = 0, inhibit (pin 1)
tied to input return (pin 7)
IOUT = 0, inhibit (pin 1) = open
IOUT = 1200mA (main)
50
50
mA
mA p-p
Ripple current4
IRIP
IOUT
= 66.7 mA (dual)
±
BW = DC to 2MHz
POUT = Full load
Efficiency
Isolation
EFF
ISO
TC
=
25 C
68
100
%
MΩ
±
°
Input to output or any pin
to case (except pin 6) at 500
V dc Tc = +25°C
TC = ±25°C
Load fault power
dissipation3
PD
Overload, TC
Short Circuit, TC = ±25°C
=
25 C5
TC
=
25 C
°
8.0
6.0
±
°
±
W
Switching frequency
Inhibit Open
FS
VOI
500
9.0
600
13
KHz
V
Circuit Voltage
Weight
35
g
For Notes to Specifications, refer to page 3
2
www.irf.com
AHF2815T Series
Notes to Specifications
1. Tested at each output.
2. Parameter guaranteed by line and load regulation tests.
3. At least 20percent of the total output power should be taken from the (+5.0 volt) main output.
4. Bandwidth guaranteed by design. Tested for 20KHz to 2.0MHz.
5. 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.
6. Above 125°C case temperature, derate output power linearly to 0 at 135°C case.
7.
TCASE = -55°C to 85°C for non screened grade.
Block Diagram
2
+Vout
+Input
8
Filter
&
Regulator
EMI
Filter
-Vout
4
5
Case
6
+5Vout
Primary
Housekeeping
Supply
Output
Return
3
Drive
Inhibit Input
1
Pulse Width
Modulator
Error
Amp &
Ref
FB
CS
Input Return
7
Application Information
The total surface area of the AHF package is 4.9 square
inches. If a worse case full load efficiency of 75% is
assumed, then the case temperature rise can be
calculated as follows:
Inhibit Function
Connecting the inhibit input (Pin 1) to input common (Pin 7)
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.
⎡
⎤
1
1
⎡
⎤
P = P
−1 = 8
−1 = 2.66W
OUT
⎢
⎣
⎥
⎢
⎣
⎥
Eff
.78
⎦
⎦
Thermal Management
∆T = 80 (4.9) -0.7 (2.66) 0.85 = 60.4°C
Assuming that there is no forced air flow, the package
temperature rise above ambient (∆T) may be calculated
using the following expression:
Hence, if TAMBIENT = +25°C, the DC/DC converter case
temperature will be approximately 85°C if no heat sink or air
flow is provided.
∆T = 80 A –0.7 p 0.85 (°C)
where A = the effective surface area in square inhes (including
heat sink if used), P = power dissipation in watts.
Standard Microcircuit Drawing Equivalence Table
Standard Microcircuit
Drawing Number
5962-94623
Vendor Cage
IR Standard
Part Number
AHF2815T
Code
52467
www.irf.com
3
AHF2815T Series
Mechanical Outlines
Standard
0.205
(5.21)
0.030 dia., 8 pins
(0.760)
0.505
(12.83)
8
1
0.705
(17.91)
0.905
(22.99)
2
3
4
5
1.105
(28.07)
7
6
1.450
(36.83)
0.800
(20.32)
0.090 R Typ
(2.290)
0.260
(6.600)
1.120
(28.45)
0.330
(8.380)
MAX
Flanged
Pin Designation
Designation
Pin #
1
2
3
4
5
6
7
8
Inhibit Input
+ Dual Output
+5V Output Return
- Dual Output
+5V Output
Case Ground
Input Return
+Input
4
www.irf.com
AHF2815T Series
Device Screening
Requirement
MIL-STD-883 Method No Suffix
ES ꢀ
HB
CH
ꢀ
Temperature Range
Element Evaluation
Non-Destructive
Bond Pull
-20°C to +85°C -55°C to +125°C
-55°C to +125°C -55°C to +125°C
MIL-PRF-38534
2023
N/A
N/A
N/A
Class H
N/A
N/A
N/A
N/A
ꢁ
Internal Visual
Temperature Cycle
Constant Acceleration
PIND
2017
1010
Yes
Cond B
500 Gs
N/A
Yes
Cond C
3000 Gs
N/A
Yes
Cond C
3000 Gs
N/A
N/A
N/A
N/A
N/A
25°C
2001, Y1 Axis
2020
Burn-In
1015
48 hrs@hi temp 160 hrs@125°C 160 hrs@125°C
ꢂ
Final Electrical
( Group A )
MIL-PRF-38534
& Specification
MIL-PRF-38534
1014
25°C
-55°C, +25°C,
+125°C
N/A
-55°C, +25°C,
+125°C
10%
PDA
N/A
Cond A
N/A
N/A
Cond A, C
N/A
Seal, Fine and Gross
Radiographic
External Visual
Cond A, C
N/A
Cond A, C
N/A
2012
ꢁ
2009
Yes
Yes
Yes
Notes:
ꢀ Best commercial practice
ꢁ Sample tests at low and high temperatures
ꢂ -55°C to +105°C for AHE, ATO, ATW
Part Numbering
AHF 28 15 T F /CH
Screening Level
Model
(Please refer to Screening Table)
No Suffix, ES, HB, CH
Input Voltage
Package Options
F = Flange
Nominal
28 = 28V
Blank = Non-Flanged
Output Voltage
15 = 5V,±15V
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. 01/2007
www.irf.com
5
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