AHF2805D/ESPBF [INFINEON]

DC-DC Regulated Power Supply Module, 2 Output, 5.508W, Hybrid, HERMETIC SEALED PACKAGE-8;
AHF2805D/ESPBF
型号: AHF2805D/ESPBF
厂家: Infineon    Infineon
描述:

DC-DC Regulated Power Supply Module, 2 Output, 5.508W, Hybrid, HERMETIC SEALED PACKAGE-8

输出元件
文件: 总14页 (文件大小:182K)
中文:  中文翻译
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AHF2800 Series  
Hybrid - High Reliability  
DC/DC Converters  
DESCRIPTION  
The AHF Series of DC/DC converters feature  
single or dual outputs over the full military  
temperature range. No derating in output power is  
required, making them suitable for use in rugged  
military applications. The low profile, small outline  
package is ideally suited to the tight board space  
requirements of many industrial and aerospace  
applications. Designed for nominal 28VDC inputs,  
this family of converters will meet the  
requirements of MIL-STD-704D. The basic circuit  
utilizes a pulse width modulated, feed-forward  
topology at a nominal switching frequency of 550  
KHz. Input to output isolation is achieved through  
the use of transformers in the forward and  
feedback circuits.  
FEATURES  
16 - 40 VDC input range  
(28 VDC nominal)  
Single and dual outputs  
12 watts output power  
22.8 W/in3 power density  
Low input/output noise  
(50 mA/60 mV p-p max. respectively)  
Indefinite short circuit and overload  
protection  
Wideband control loop for superior  
transient characteristics  
No derating for -55°C to +125°C  
operation  
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 50 kHz, 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  
Constant switching frequency  
(550 kHz nominal)  
incorporate opto-couplers in their design.  
These converters are manufactured in a facility  
certified to MIL-PRF-38534. All processes used to  
manufacture these converters have been qualified  
to enable Lambda Advanced Analog to deliver  
compliant devices. Four screening grades are  
available to satisfy a wide range of requirements.  
The CH grade converters are fully compliant to  
MIL-PRF-38534 class H. The HB grade  
converters are processed to full MIL-PRF-38534  
screening but do not have class H element  
evaluation as required by MIL-PRF-38534. Two  
grades are fully tested and operate over the full  
military temperature range without derating of  
output power. Industrial and commercial grades  
are also available. Variations in electrical,  
mechanical and screening can be accommodated.  
Extensive computer simulation using complex  
modeling enables rapid design modification to be  
provided. Contact Lambda Advanced Analog with  
specific requirements.  
SPECIFICATIONS  
AHF2812S  
ABSOLUTE MAXIMUM RATINGS  
Input Voltage  
-0.5V to 50V  
Soldering Temperature  
Case Temperature  
300°C for 10 seconds  
Operating-55°C to +125°C  
Storage -65°C to +135°C  
TABLE II. Electrical Performance Characteristics  
Test  
Symbol  
Conditions  
-55°C £ TC £ +125°C  
Group A  
subgroups  
Device  
types  
Limits  
Unit  
VIN = 28 V dc ±5%, CL = 0 unless  
otherwise specified  
Min  
11.88  
Max  
Output voltage  
VOUT  
IOUT = 0  
1
01  
12.12  
V
2,3  
11.76  
12.24  
Output current 1/  
IOUT  
VRIP  
VIN = 16, 28, and 40 V dc,  
1,2,3  
1,2,3  
01  
01  
1000 mA  
Output ripple voltage 2/  
VIN = 16, 28, and 40 V dc,  
B.W. = 20 Hz to 2 MHz  
60 mV p-p  
Line  
regulation  
VRLINE  
VIN = 16, 28, and 40 V dc,  
IOUT = 0,500, and 1000 mA  
1,2,3  
1,2,3  
01  
01  
50 mV  
50 mV  
Load  
regulation  
VRLOAD  
VIN = 16, 28, and 40 V dc,  
IOUT = 0, 500, and 1000 mA  
Input current  
IIN  
IOUT = 0, inhibit (pin 1)  
tied to input return (pin 7)  
1,2,3  
01  
mA  
12  
50  
IOUT = 0,  
inhibit (pin 1) = open  
Input ripple current 2/  
Efficiency  
IRIP  
IOUT = 1000 mA,  
B.W. = 20 Hz to 2 MHz  
1,2,3  
01  
50 mA p-p  
EFF  
IOUT = 1000 mA,  
1
2,3  
1
01  
01  
78  
75  
%
Isolation  
ISO  
Input to output or any pin  
to case (except pin 6) at 500  
V dc, TC = +25°C  
100  
MW  
Capacitive load 3/ 4/  
CL  
PD  
No effect on dc performance,  
TC = +25°C  
4
1
01  
01  
200 µF  
Power dissipation  
load fault  
W
Overload 5/  
6
Short circuit  
1,2,3  
4,5,6  
01  
01  
2
Switching frequency  
500  
600  
FS  
IOUT = 1000 mA  
kHz  
See footnotes at end of table.  
2
AHF2812S  
TABLE II. Electrical Performance Characteristics - Continued  
Test  
Symbol  
Conditions  
-55°C £ TC £ +125°C  
Group A  
Subgroups  
Device  
types  
Unit  
Limits  
VIN = 28 V dc ±5%, CL = 0 unless  
otherwise specified  
Min  
-300  
Max  
Output response to step  
transient load changes 6/  
VOTLOAD  
500 mA to/from 1000 mA  
4
01  
+300 mV pk  
5,6  
4
-450  
-500  
-750  
+450  
0 mA to/from 500 mA  
+500  
5,6  
4,5,6  
+750  
Recovery time, step  
transient load changes  
6/ 7/  
TTLOAD  
500 mA to/from 1000 mA  
01  
01  
100 µs  
0 mA to 500 mA  
500 mA to 0 mA  
4,5,6  
4,5,6  
4,5,6  
1500  
10 ms  
Output response to  
VOTLINE  
Input step 16 V to/from  
40 V dc, IOUT = 1000 mA 4/ 8/  
01  
01  
1500 mV pk  
transient step line changes  
Recovery time transient  
step line changes  
Input step 16 V to/from 40 V dc  
IOUT = 1000 mA 4/ 7/ 8/  
TTLINE  
4,5,6  
800 µs  
Turn on overshoot  
Turn on delay  
VTonOS  
TonD  
IOUT = 0 and 1000 mA  
4,5,6  
4,5,6  
4,5,6  
01  
01  
01  
600 mV pk  
20 ms  
IOUT = 0 and 1000 mA 9/  
Load fault recovery 4/ 9/ TrLF  
Weight  
20 ms  
35 grams  
Notes:  
1/ Parameter guaranteed by line and load regulation tests.  
2/ Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.  
3/ 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.  
4/ 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.  
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/ Load step transition time between 2 and 10 microseconds.  
7/ Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1 percent of VOUT at 50 percent load.  
8/ Input step transition time between 2 and 10 microseconds.  
9/ 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 1)  
while power is applied to the input is unlimited.  
3
SPECIFICATIONS  
AHF2815S  
ABSOLUTE MAXIMUM RATINGS  
Input Voltage  
-0.5V to 50V  
Soldering Temperature  
Case Temperature  
300°C for 10 seconds  
Operating-55°C to +125°C  
Storage -65°C to +135°C  
TABLE III. Electrical Performance Characteristics  
Test  
Symbol  
Conditions  
-55°C £ TC £ +125°C  
Group A  
subgroups  
Device  
types  
Limits  
Unit  
VIN = 28 V dc ±5%, CL = 0 unless  
otherwise specified  
Min  
14.85  
Max  
Output voltage  
VOUT  
IOUT = 0  
1
All  
15.15  
V
2,3  
14.70  
15.30  
Output current 1/  
IOUT  
VRIP  
VIN = 18, 28, and 40 V dc,  
1,2,3  
1,2,3  
All  
All  
2000 mA  
Output ripple voltage 2/  
VIN = 18, 28, and 40 V dc,  
B.W. = 20 Hz to 2 MHz  
50 mV p-p  
Line  
VRLINE  
VIN = 18, 28, and 40 V dc,  
1
All  
±35 mV  
regulation  
IOUT = 0, 1000, and 2000 mA  
2,3  
±75  
Load  
regulation  
VRLOAD VIN = 18, 28, and 40 V dc,  
IOUT = 0, 1000, and 2000 mA  
1,2,3  
All  
All  
±150 mV  
Input current  
IIN  
IOUT = 0, inhibit (pin 2)  
1,2,3  
18 mA  
tied to input return (pin 10)  
IOUT = 0, inhibit (pin 2) = open  
50  
Input ripple current 2/  
Efficiency  
IRIP  
EFF  
IOUT = 2000 mA,  
B.W. = 20 Hz to 2 MHz  
1,2,3  
All  
All  
20 mA p-p  
IOUT = 2000 mA,  
1
2,3  
1
80  
77  
%
Isolation  
ISO  
Input to output or any pin  
to case (except pin 7) at 500  
V dc, TC = +25°C  
All  
100  
MW  
Capacitive load 3/ 4/  
CL  
PD  
No effect on dc performance,  
TC = +25°C  
4
1
All  
All  
200 µF  
Power dissipation  
load fault  
Overload  
5/  
12  
9
W
Short circuit  
1,2,3  
4,5,6  
All  
Switching frequency  
FS  
IOUT = 2000 mA  
01, 04  
02, 05  
03, 06  
250  
250  
275  
300 kHz  
270  
300  
See footnotes at end of table.  
4
AHF2815S  
TABLE III. Electrical Performance Characteristics - Continued  
Test  
Symbol  
Conditions  
-55°C £ TC £ +125°C  
Group A  
Subgroups  
Device  
types  
Unit  
Limits  
VIN = 28 V dc ±5%, CL = 0 unless  
otherwise specified  
Min  
-800  
-1000  
Max  
Output response to step  
transient load changes 6/  
VOTLOA 1000 mA to/from 2000 mA  
D
4,5,6  
All  
All  
+800 mV pk  
0 mA to/from 1000 mA  
4,5,6  
4
+750  
Recovery time, step  
transient load changes  
6/ 7/  
TTLOAD  
1000 mA to/from 2000 mA  
0 mA to/from 1000 mA  
100 µs  
5,6  
4
200  
All  
5
ms  
5,6  
4,5,6  
10  
Output response to  
transient step line changes  
VOTLINE Input step 18 V to/from  
40 V dc, IOUT = 2000 mA 4/ 8/  
04  
05  
06  
-1000  
+1000 mV pk  
Recovery time transient  
step line changes  
Input step 18 V to/from 40 V dc  
IOUT = 2000 mA 4/ 7/ 8/  
04  
05  
06  
TTLINE  
4,5,6  
500 µs  
Turn on overshoot  
Turn on delay  
VTonOS IOUT = 0 and 2000 mA  
4,5,6  
4,5,6  
4,5,6  
All  
All  
All  
750 mV pk  
12 ms  
TonD  
TrLF  
IOUT = 0 and 2000 mA 9/  
Load fault recovery 4/ 9/  
Weight  
12 ms  
38 grams  
Notes:  
1/ Parameter guaranteed by line and load regulation tests.  
2/ Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.  
3/ 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.  
4/ 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.  
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/ Load step transition time between 2 and 10 microseconds.  
7/ Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1 percent of VOUT at 50 percent load.  
8/ Input step transition time between 2 and 10 microseconds.  
9/ 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.  
5
SPECIFICATIONS  
AHF2812D  
ABSOLUTE MAXIMUM RATINGS  
Input Voltage  
-0.5V to 50V  
Soldering Temperature  
Case Temperature  
300°C for 10 seconds  
Operating-55°C to +125°C  
Storage -65°C to +135°C  
TABLE V. Electrical Performance Characteristics.  
Test  
Symbol  
Conditions  
-55°C £ TC £ +125°C  
Group A  
subgroups  
Device  
types  
Limits  
Unit  
VIN = 28 V dc ±5%, CL = 0 unless  
otherwise specified  
Min  
±11.88  
Max  
Output voltage  
VOUT  
IOUT = 0  
1
01  
±12.12  
±12.24  
V
2,3  
±11.76  
100  
Output current 1/ 2/  
IOUT  
VIN = 16, 28, and 40 V dc,  
each output  
1,2,3  
01  
01  
01  
01  
01  
01  
900 mA  
60 mV p-p  
30 mV  
Output ripple voltage 3/  
VRIP  
VIN = 16, 28, and 40 V dc,  
B.W. = 20 Hz to 2 MHz  
1,2,3  
1,2,3  
1,2,3  
1,2,3  
1,2,3  
Line  
regulation 4/  
VRLINE  
VRLOAD  
VRCROS  
IIN  
VIN = 16, 28, and 40 V dc,  
IOUT = 0, 500, and 1000 mA  
Load  
regulation 4/  
VIN = 16, 28, and 40 V dc,  
IOUT = 0, 500, and 1000 mA  
30 mV  
Cross  
regulation 5/  
10 percent to 90 percent  
load change  
3.0  
%
Input current  
IOUT = 0, inhibit (pin 1) tied to input  
return (pin 7)  
12 mA  
IOUT = 0,  
60  
inhibit (pin 1) = open  
Input ripple current 3/ 4/  
Efficiency 4/  
IRIP  
IOUT = 1000 mA,  
B.W. = 20 Hz to 2 MHz  
1,2,3  
1,3  
01  
01  
50 mA p-p  
IOUT = 1000 mA,  
EFF  
77  
%
TC = +25°C  
2
1
74  
Isolation  
ISO  
Input to output or any pin  
to case (except pin 6) at  
500 V dc, TC = +25°C  
01  
100  
MW  
Capacitive load 6/ 7/  
No effect on dc performance, TC =  
+25°C, total for both outputs  
CL  
PD  
4
01  
01  
200 µF  
Power dissipation  
load fault  
1,2,3  
6
3
W
Overload, TC = +25°C 8/  
Short circuit, TC = +25°C  
See footnotes at end of table.  
6
AHF2812D  
TABLE V. Electrical performance characteristics - Continued.  
Test  
Symbol  
Conditions  
-55°C £ TC £ +125°C  
Group A  
Subgroups  
Device  
types  
Limits  
Unit  
VIN = 28 V dc ±5%, CL = 0 unless  
otherwise specified  
Min  
Max  
600 kHz  
Switching frequency  
4/  
FS  
VOTLOAD  
IOUT = 1000 mA  
4,5,6  
4,5,6  
01  
01  
500  
Output response to step  
500 mA to/from 1000 mA  
-200  
-800  
+200 mV pk  
transient load changes 4/ 9/  
0 mA to/from 500 mA  
4,5,6  
4,5,6  
01  
01  
+800  
Recovery time, step transient  
load changes 4/ 9/ 10/  
TTLOAD  
500 mA to/from 1000 mA  
70 µs  
0 mA to/from 500 mA  
4,5,6  
4,5,6  
01  
01  
1000  
Output response transient step VOTLINE  
line changes 4/ 7/ 11/  
Input step from/to 16 to 40 V dc,  
IOUT = 1000 mA  
-750  
+750 mV pk  
Recovery time transient step  
line changes 4/ 7/ 10/ 11/  
Input step from/to 16 to  
40 V dc,  
TTLINE  
4,5,6  
01  
1200 µs  
IOUT = 1000 mA  
Turn on overshoot 4/  
Turn on delay 4 12/  
Load fault recovery 7/  
Weight  
VTonOS  
TonD  
IOUT = 0 and 1000 mA  
IOUT = 0 and 1000 mA  
4,5,6  
4,5,6  
4,5,6  
01  
01  
01  
600 mV pk  
25 ms  
TrLF  
25 ms  
38 grams  
Notes:  
1/ Parameter guaranteed by line load, and cross regulation tests.  
2/ Up to 90 percent of full power is available from either output provided the total output does not exceed 12 W.  
3/ Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.  
4/ Load current split equally between +VOUT and -VOUT  
.
5/ 1.2 watt load on output under test, 1.2 watt to 10.8 watt load change on other output.  
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/ Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the  
limits specified inTable V.  
8/ 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.  
9/ Load step transition time between 2 and 10 microseconds.  
10/ Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1 percent of VOUT at 50 percent load.  
11/ Input step transition time between 2 and 10 microseconds.  
12/ 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 1)  
while power is applied to the input.  
7
SPECIFICATIONS  
AHF2815D  
ABSOLUTE MAXIMUM RATINGS  
Input Voltage  
-0.5V to 50V  
Soldering Temperature  
Case Temperature  
300°C for 10 seconds  
Operating-55°C to +125°C  
Storage -65°C to +135°C  
TABLE VI. Electrical Performance Characteristics  
Test  
Symbol  
Conditions  
-55°C £ TC £ +125°C  
Group A  
subgroups  
Device  
types  
Limits  
Unit  
VIN = 28 V dc ±5%, CL = 0 unless  
otherwise specified  
Min  
Max  
Output voltage  
VOUT  
IOUT = 0  
1
01  
±14.85  
±14.70  
80  
±15.15  
±15.30  
V
2,3  
Output current 1/ 2/  
IOUT  
VRIP  
VIN = 16, 28, and 40 V dc, each output  
1,2,3  
1,2,3  
01  
01  
720 mA  
Output ripple 3/  
voltage  
VIN = 16, 28, and 40 V dc,  
B.W. = 20 Hz to 2 MHz  
60 mV p-p  
Line  
regulation 4/  
VRLINE  
VIN = 16, 28, and 40 V dc,  
IOUT = 0, 400, and 800 mA  
1,2,3  
01  
35 mV  
35 mV  
Load  
regulation 4/  
VRLOAD  
VRCROS  
VIN = 16, 28, and 40 V dc,  
IOUT = 0, 400, and 800 mA  
1,2,3  
1,2,3  
01  
01  
Cross  
regulation 5/  
10 percent to 90 percent  
load change each output  
3.0  
%
Input current  
IIN  
IOUT = 0, inhibit (pin 1) tied to input  
return (pin 7)  
1,2,3  
01  
12 mA  
55  
IOUT = 0,  
inhibit (pin 1) = open  
Input ripple current 3/ 4/  
Efficiency 4/  
IRIP  
EFF  
IOUT = 800 mA, B.W. = 20 Hz to 2 MHz  
IOUT = 800 mA  
1,2,3  
1,3  
01  
01  
50 mA p-p  
%
78  
75  
2
1
Isolation  
ISO  
Input to output or any pin  
to case (except pin 6) at  
500 V dc, TC = +25°C  
01  
100  
MW  
Capacitive load 6/ 7/  
CL  
PD  
No effect on dc performance,  
TC = +25°C, total for both outputs  
4
01  
01  
200 µF  
Power dissipation  
load fault  
1,2,3  
W
Overload 8/  
6
Short circuit  
2.5  
Switching frequency  
4/  
FS  
IOUT = 800 mA  
4,5,6  
4,5,6  
01  
01  
500  
600 kHz  
Output response to step  
transient load changes 4/  
9/  
VOTLOAD  
400 mA to/from 800 mA  
-200  
+200 mV pk  
0 mA to/from 400 mA  
4,5,6  
01  
-800  
+800  
See footnotes at end of table.  
8
AHF2815D  
TABLE VI. Electrical Performance Characteristics - Continued.  
Test  
Symbol  
Conditions  
-55°C £ TC £ +125°C  
Group A  
Subgroups  
Device  
types  
Limits  
Unit  
VIN = 28 V dc ±5%, CL = 0 unless  
otherwise specified  
Min  
Max  
Recovery time, step  
transient load changes 4/  
9/ 10/  
TTLOAD  
400 mA to/from 800 mA  
0 mA to/from 400 mA  
4,5,6  
01  
70 µs  
4,5,6  
4,5,6  
01  
01  
500  
Output response transient  
step line changes 4/ 7/  
11/  
Input step from/to 16 to 40 V dc,  
IOUT = 800 mA  
VOTLINE  
-750  
+750 mV pk  
1200 µs  
Recovery time transient  
step line changes 4/ 7/  
10/ 11/  
TTLINE  
Input step from/to 16 to  
40 V dc, IOUT = 800 mA  
4,5,6  
01  
Turn on overshoot 4/  
VTonOS  
TonD  
IOUT = 0 and 800 mA  
IOUT = 0 and 800 mA  
4,5,6  
4,5,6  
4,5,6  
01  
01  
01  
750 mV pk  
25 ms  
Turn on delay 4/ 12/  
Load fault recovery  
Weight  
7/  
TrLF  
25 ms  
38 grams  
Notes:  
1/ Parameter guaranteed by line load, and cross regulation tests.  
2/ Up to 90 percent of full power is available from either output provided the total output does not exceed 12 W.  
3/ Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.  
4/ Load current split equally between +VOUT and -VOUT  
.
5/ 1.2 watt load on output under test, 1.2 watt to 10.8 watt load change on other output.  
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/ 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 VI.  
8/ 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.  
9/ Load step transition time between 2 and 10 microseconds.  
10/ Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1 percent of VOUT at 50 percent load.  
11/ Input step transition time between 2 and 10 microseconds.  
12/ 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 1) while  
power is applied to the input.  
9
BLOCK DIAGRAM (Single Output)  
INPUT  
FILTER  
8
OUTPUT  
FILTER  
4
1
CONTROLLER  
ERROR  
AMP  
& REF  
Case  
Ground  
6
7
3
APPLICATION INFORMATION  
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 400 µA of current. The open  
circuit voltage of the inhibit input is 151. ±1 VDC.  
10  
STANDARDIZED MILITARY DRAWING  
CROSS REFERENCE  
Thermal Management  
Assuming that there is no forced air flow, the  
package termperature rise above ambient (T) may  
be calculated using the following expression:  
Model  
Drawing Number  
SMD#5962-91600  
SMD#5962-94568  
SMD#5962-94563  
SMD#5962-92111  
SMD#5962-92351  
AHF2805S/CH  
AHF2812S/CH  
AHF2815S/CH  
AHF2812D/CH  
AHF2815D/CH  
T 80 A -0.7 p 0. 85 ( °C)  
where A = the effective surface area in square  
inches (including heat sink if used;) P = power  
dissipation in watts.  
PART NUMBER  
AHF 28 xx x F/ x  
The total surface area of the AHF package is 4.9  
square inches. If a worse case full load efficiency of  
78% is assumed, then the case temperature rise  
can be calculated as follows:  
Model  
Screening (see table)  
Omit for -20°C to +85°C  
ES -55°C to +125°C  
Input Voltage  
HB— -55°C to +125°C  
CH— Class H complaint  
See table for standard  
Mlitary drawing number  
1
EFF  
1
P = POUT  
[
- 1  
]
= 12  
[
- 1 = 3.4 W  
]
Output Voltage  
05— 5V DC  
12—12V DC  
15—15V DC  
.78  
T = 80 (4.9)-0.7 (3.4)0.85 = 74°C  
Hence, if TAMBIENT = +25°C, the DC/DC converter  
case temperature will be approximately 100°C if no  
heat sink or air flow is provided.  
S—Single  
D—Dual  
Package Option  
Omit For Standard  
F-Flange  
To calculate the heat sink area required to maintain  
a specific case temperature rise, the above equa-  
tion may be manipulated as follows:  
A HEAT SINK = [ T  
80P 0.85  
]
-1.43 - A PKG  
As an example, if a maximum case temperature  
rise of 50°C above ambient is desired, then the  
required effective heat sink area is:  
A
HEAT SINK = [ 50  
80 (3.4) 0.85  
]
-1.43 -4.9 = 3.75 in.2  
Available Screening Levels and Process Variations for AHF Series  
MIL-STD-883  
Method  
No  
Suffix  
ES  
Suffix  
HB  
Suffix  
CH  
Suffix  
Requirement  
Temperature Range  
Element Evaluation  
Internal Visual  
-20 to +85°C  
*
-55°C to +125°C -55°C to +125°C -55°C to +125°C  
MIL-PRF-38534  
2017  
1010  
2001  
1015  
Yes  
Cond B  
500g  
Yes  
Cond C  
Yes  
Cond C  
Temperature Cycle  
Constant Acceleration  
Burn-in  
Cond A  
Cond A  
96hrs @ 125°C  
96hrs @ 125°C  
25°C  
160hrs @ 125°C  
160hrs @ 125°C  
Final Electrical (Group A) MIL-PRF-38534  
25°C  
-55, +25, +125°C -55, +25, +125°C  
Seal, Fine & Gross  
External Visual  
1014  
2009  
*
*
Cond A, C  
Yes  
Cond A, C  
Yes  
Cond A, C  
Yes  
*
Per Commercial Standards  
11  
MECHANICAL OUTLINE  
0.03 DIA. 8 Pins  
(0.76)  
0.205  
(5.21)  
0.505  
(12.83)  
1
8
0.705  
(17.91)  
0.905  
(22.99)  
2
3
4
5
1.105  
(28.07)  
1.450  
(36.83)  
7
6
0.800  
(20.32)  
0.09 R Typ  
(2.29)  
0.26  
(6.60)  
0.330  
(8.38)  
MAX  
1.120  
(28.45)  
Tolerances: .xx =±0.010, .xxx= ±0.005  
PIN DESIGNATION  
AHF2805S  
AHF2812S  
AHF2815S  
Pin1 Inhibit input  
Pin2 N/C  
Pin8 Positive input  
Pin3 Output common  
Pin4 Positiveoutput  
Pin5 N/C  
Pin7 Input common  
Pin6 Caseground  
1
8
2
3
4
5
TOP  
VIEW  
7
6
AHF2805D  
AHF2812D  
AHF2815D  
Pin1 Inhibit input  
Pin8 Positive input  
Pin7 Input common  
Pin6 Case Ground  
Pin2 Positiveoutput  
Pin3 Output common  
Pin4 Negative output  
Pin5 N/C  
12  
NOTES  
13  
NOTES  
The information in this data sheet has been carefully checked and is believed to be accurate, however,  
no responsibility is assumed for possible errors. The specifications are subject to change without notice.  
©Lambda Advanced Analog  
9847  
2270 Martin Avenue  
Santa Clara CA 95050-2781  
(408) 988-4930 FAX (408) 988-2702  
MIL-PRF-38534  
Certified  

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