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International Rectifier Electronic Components Datasheet



AFL270XXD

ADVANCED ANALOG HIGH RELIABILITY HYBRID DC/DC CONVERTERS


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PD - 94461B
ADVANCED ANALOG
HIGH RELIABILITY
HYBRID DC/DC CONVERTERS
Description
The AFL Series of DC/DC converters feature high power
density with no derating over the full military tempera-
ture range. This series is offered as part of a complete
family of converters providing single and dual output
voltages and operating from nominal +28 or +270 volt
inputs with output power ranging from 80 to 120 watts.
For applications requiring higher output power, indi-
vidual converters can be operated in parallel. The inter-
nal current sharing circuits assure equal current distri-
bution among the paralleled converters. This series in-
corporates Advanced Analog’s proprietary magnetic
pulse feedback technology providing optimum dynamic
line and load regulation response. This feedback sys-
tem samples the output voltage at the pulse width modu-
lator fixed clock frequency, nominally 550 KHz. Multiple
converters can be synchronized to a system clock in the
500 KHz to 700 KHz range or to the synchronization
output of one converter. Undervoltage lockout, primary
and secondary referenced inhibit, soft-start and load
fault protection are provided on all models.
These converters are hermetically packaged in two en-
closure variations, utilizing copper core pins to mini-
mize resistive DC losses. Three lead styles are avail-
able, each fabricated with Advanced Analog’s rugged
ceramic lead-to-package seal assuring long term
hermeticity in the most harsh environments.
Manufactured in a facility fully qualified to MIL-PRF-
38534, these converters are available in four screening
grades to satisfy a wide range of requirements. The CH
grade is fully compliant to the requirements of MIL-H-
38534 for class H. The HB grade is processed and
screened to the class H requirement, but may not nec-
essarily meet all of the other MIL-PRF-38534 require-
ments, e.g., element evaluation and Periodic Inspection
(P.I.) not required. Both grades are tested to meet the
complete group “A” test specification over the full mili-
tary temperature range without output power deration.
Two grades with more limited screening are also avail-
www.irf.com
AFL270XXD SERIES
270V Input, Dual Output
AFL
Features
n 160 To 400 Volt Input Range
n ±5, ±12, and ±15 Volts Outputs Available
n High Power Density - up to 70 W / in3
n Up To 100 Watt Output Power
n Parallel Operation with Power Sharing
n Low Profile (0.380") Seam Welded Package
n Ceramic Feedthru Copper Core Pins
n High Efficiency - to 87%
n Full Military Temperature Range
n Continuous Short Circuit and Overload
Protection
n Output Voltage Trim
n Primary and Secondary Referenced
Inhibit Functions
n Line Rejection > 60 dB - DC to 50KHz
n External Synchronization Port
n Fault Tolerant Design
n Single Output Versions Available
n Standard Military Drawings Available
able for use in less demanding applications. Varia-
tions in electrical, mechanical and screening can
be accommodated. Contact Advanced Analog for
special requirements.
1
09/11/02



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AFL270XXD pdf
AFL270XXD Series
Specifications
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Soldering Temperature
Case Temperature
-0.5V to 500V
300°C for 10 seconds
Operating
Storage
-55°C to +125°C
-65°C to +135°C
Static Characteristics -55°C < TCASE < +125°C, 160V< VIN < 400V unless otherwise specified.
Parameter
Group A
Subgroups
Test Conditions
Min Nom Max Unit
INPUT VOLTAGE
OUTPUT VOLTAGE
AFL27005D
AFL27012D
AFL27015D
AFL27005D
AFL27012D
AFL27015D
OUTPUT CURRENT
AFL27005D
AFL27012D
AFL27015D
OUTPUT POWER
AFL27005D
AFL27012D
AFL27015D
1
1
1
1
1
1
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
Note 6
VIN = 270 Volts, 100% Load
Positive Output
Negative Output
Positive Output
Negative Output
Positive Output
Negative Output
Positive Output
Negative Output
Positive Output
Negative Output
Positive Output
Negative Output
VIN = 160, 270, 400 Volts - Notes 6, 11
Either Output
Either Output
Either Output
Total of Both Outputs. Notes 6,11
160
4.95
-5.05
11.88
-12.12
14.85
-15.15
4.90
-5.10
11.76
-12.24
14.70
-15.30
270 400
5.00
-5.00
12.00
-12.00
15.00
-15.00
5.05
-4.95
12.12
-11.88
15.15
-14.85
5.10
-4.90
12.24
-11.76
15.30
-14.70
12.8
6.4
5.3
80
96
100
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
W
W
W
MAXIMUM CAPACITIVE LOAD
Each Output Note 1
5,000
µfd
OUTPUT VOLTAGE
TEMPERATURE COEFFICIENT
VIN = 270 Volts, 100% Load - Notes 1, 6
-0.015
+0.015 %/°C
OUTPUT VOLTAGE REGULATION
Line
Load
1, 2, 3
1, 2, 3
Note 10
No Load, 50% Load, 100% Load
VIN = 160, 270, 400 Volts.
-0.5
-1.0
+0.5
+1.0
%
%
Cross
AFL27005D
1, 2, 3
AFL27012D 1, 2, 3
AFL27015D 1, 2, 3
VIN = 160, 270, 400 Volts. Note 12
Positive Output
Negative Output
Positive Output
Negative Output
Positive Output
Negative Output
-1.0
-8.0
-1.0
-5.0
-1.0
-5.0
+1.0
+8.0
+1.0
+5.0
+1.0
+5.0
%
%
%
%
%
%
For Notes to Specifications, refer to page 4
2
www.irf.com



Part Number AFL270XXD
Description ADVANCED ANALOG HIGH RELIABILITY HYBRID DC/DC CONVERTERS
Maker International Rectifier - International Rectifier
Total Page 10 Pages
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