HR301-2812 [CRANE]
DC/DC CONVERTERS 28 VOLT INPUT; DC / DC转换器， 28伏特的输入
| 型号： | HR301-2812 |
| 厂家： | 
Crane Aerospace & Electronics. |
| 描述： | DC/DC CONVERTERS 28 VOLT INPUT |
| 文件： | 总7页 (文件大小：152K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FEATURES
• –40° to +85°C operation
• 18 to 36 VDC input
(19 to 36 VDC input HR301-2805)
• Fully Isolated
HR300 SERIES
30 WATT
DC/DC CONVERTERS
28 VOLT
INPUT
MODELS
• Optocoupler feedback
VDC OUTPUT
• Fixed frequency, 240 to 300 kHz typical
• Topology – Push-Pull Forward
• 50 V for up to 50 ms transient protection
• Inhibit function
SINGLE
DUAL
±12
5
12
15
±15
• Indefinite short circuit protection
• Remote sense on HR301-2805 model
• Up to 86% efficiency
Size (max.): 2.720 x 1.350 x 0.505 inches (69.09 x 34.29 x 12.83 mm)
See Section B8, case J5, for dimensions.
Weight:
60 grams max.
Screening: Standard only. See Section C2 for screening description.
Short circuit protection is provided through foldback current limiting.
When the output current reaches approximately 125% of the full
rated load, the output voltage begins to reduce to protect the
converter. The converter can sustain a true short circuit condition
indefinitely. The HR300’s flanged case facilitates removal of heat
and provides for mechanically secure mounting. If full power opera-
tion or indefinite short circuit protection is a system requirement, the
HR300 converter should be mounted with an efficient heat sink in
contact with the mounting flange.
DESCRIPTION
HR300 Series™ DC/DC converters combine the small size and high
reliability of hybrid-based components, the high efficiency of
switching regulators, and the isolation, regulation, and low noise
characteristics of linear regulators.
SMALL SIZE AND RELIABILITY
HR300 DC/DC converters use thick-film hybrid manufacturing tech-
niques for smaller size, lighter weight and higher reliability than
converters produced with other circuit techniques. With a footprint of
less than 3.7 square inches and a 0.5 inch height, the HR300
converters reach power densities up to 22 watts per cubic inch.
Internal filters in all HR300 converters provide low noise on both
the input and outputs. On HR301 models, two-section
L-C filters limit output ripple voltage and reflected input ripple
current. On HR302 models, single-section L-C filters perform the
same function.
The HR300 parts use the same manufacturing procedures and
quality controls that Interpoint applies to converters built for aero-
space and military applications. The converters are hermetically
sealed in metal packages that are guaranteed a maximum leak rate
For maximum output regulation, the HR301-2805 is provided with
external output voltage remote sense pins. Connecting the remote
sense pins to the load provides a four-terminal voltage mode which
eliminates the adverse effects of line resistance voltage drops.
Remote sense pins may be left unconnected, but see cautions in
this data sheet. For normal operation, remote sense pins should be
connected to the respective output pins.
-3
of less than 10 atm-cc/sec.
HIGH PERFORMANCE
HR300 converters use a constant frequency pulse-width modulated
switching regulator design operating in the forward mode with a
clock switching frequency of 240 to 300 kHz. Isolation is achieved
through the use of a transformer in the forward power circuit and an
optocoupler in the feedback control loop. The full load output power
of 30 watts is available over the entire 18 to 36 VDC input range (19
to 36 HR301-2805). On dual output models, up to 90% of full power
is available from either output up to a combined total of 30 watts.
INHIBIT FUNCTION
An inhibit is provided to allow a logic input to shut down the
converter. An open circuit on the inhibit pin (pin 2 or 8) allows normal
operation. A connection between the inhibit pin and the input
common (pin 10) disables the internal oscillator, shutting down the
output. The inhibit pin has an open circuit voltage of 11 to 16 V on
single output models, 8 to 12 V on HR302-2812 and 10 to 14 V on
HR302-2815. In the inhibit mode, approximately 1 mA must be sunk
from the inhibit pin. An active low open collector is required to acti-
vate the inhibit function.
The HR300’s high efficiency is maintained over the entire input
voltage range and from approximately 25% of full load to full load
(see typical efficiency curves).
B4-39
HR300 SERIES
DC/DC CONVERTERS
30 WATT
INHIBIT
TYPICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Inhibit TTL Open Collector
• Logic low (output disabled)
Inhibit pin current 1 mA typical
• Referenced to input common
• Logic high (output enabled)
Open collector
Input Voltage
• 18 to 36 VDC (19 to 36 VDC HR301-2805)
Output Power
• 30 watts
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –55°C to +125°C
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
Input to Output Capacitance
• 80 pF typical single output models
• 70 pF typical HR302-2812
• 60 pF typical HR302-2815
Current Limit
• 125% of full load, typical
Isolation
• 100 megohm minimum at 500 V
Conversion Frequency
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 18 to 36 VDC continuous
19 to 36 VDC HR301-2805
• 50 V for 50 msec transient
Case Operating Temperature (Tc)
• –40°C to +85°C full power
• 240 to 300 kHz
Inhibit Pin Voltage (unit enabled)
• 11 to 16 V single output models
• 8 to 12 V HR302-2812
• 10 to 14 V HR302-2815
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER
HR301-2805
HR301-2812
TYP MAX
HR301-2815
TYP MAX
CONDITIONS
MIN
4.95
—
TYP
5.0
—
—
30
7
MAX
MIN
11.88
—
MIN
14.85
—
UNITS
VDC
A
OUTPUT VOLTAGE
OUTPUT CURRENT
OUTPUT POWER
OUTPUT RIPPLE
5.05
6.0
30.0
60
12
—
—
30
10
10
28
—
20
—
—
12.12
2.5
30.0
70
15
—
—
30
10
10
28
—
20
—
—
15.15
2.0
30.0
75
–40°C TO +85°C
BW ≤ 2 MHz
—
—
—
W
—
—
—
mV p-p
mV
1
LINE REGULATION
MIN. TO MAX. V
—
25
—
40
—
40
IN
2
LOAD REGULATION
NO LOAD TO FULL
NO LOAD TO FULL
TRANSIENT 50 ms
NO LOAD
—
5
25
—
40
—
40
mV
INPUT VOLTAGE
–40°C TO +85°C
INPUT CURRENT
19
—
28
—
15
—
—
36
18
—
36
18
36
VDC
mA
50
50
—
50
—
20
—
35
—
35
FULL LOAD
—
1370
15
—
1400
22
—
1400
22
INHIBITED
—
—
—
INPUT RIPPLE
CURRENT
BW ≤ 2 MHz
—
79
—
—
5
15
—
—
—
—
80
—
—
10
84
25
—
—
—
—
82
—
—
10
86
25
—
—
—
mA p-p
%
EFFICIENCY
START-UP
82
2
DELAY
15
30
40
ms
OVERSHOOT
500
1200
1500
mV
Notes
1. For HR301-2805, with the remote sense pins connected to the load and no resistance between the output pins and load.
2. A low output impedance power source is required on the input to realize this start-up time. If less than full surge current is available, start-up time
will be longer
CAUTION
Permanent damage to the HR301-2805 will result if pin 6 is shorted to ground. Damage may also result if pin 4 or pin 5 is disconnected from the load
during operation with the remote sense leads connected to the load. If remote sense pins are not connected to the load, the output voltage of the
HR301-2805 will rise to approximately 6.2 VDC measured across pins 4 and 5.
B4-40
HR300 SERIES
30 WATT
DC/DC CONVERTERS
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODELS
PARAMETER
HR302-2812
TYP
HR302-2815
CONDITION
MIN
11.88
11.88
—
MAX
MIN
14.85
14.85
—
TYP
15.0
15.0
—
MAX
UNITS
OUTPUT VOLTAGE
+V
12.0
12.0
—
12.12
12.12
2.5
15.15
15.15
2.0
OUT
VDC
– V
OUT
1
OUTPUT CURRENT
A
1
OUTPUT POWER
–40°C to +85°C
—
—
30.0
—
—
30.0
W
OUTPUT RIPPLE
VOLTAGE
BW ≤ 2 MHz
—
—
50
10
90
30
—
—
50
10
90
40
mV p-p
mV
LINE REGULATION
LOAD REGULATION
V
= 18 TO 36
IN
NO LOAD TO FULL
—
—
—
18
—
20
2.5
2.5
28
60
3.5
3.5
36
—
—
—
18
—
20
2.2
2.2
28
60
3.2
3.2
36
mV
%
2
CROSS REGULATION
+V
OUT
– V
OUT
INPUT VOLTAGE
–40°C to +85°C
INPUT CURRENT
CONTINUOUS
VDC
mA
TRANSIENT 50 ms
—
50
—
50
NO LOAD
FULL LOAD
INHIBITED
—
—
—
35
—
—
50
1350
24
—
—
—
45
—
—
60
1400
24
INPUT RIPPLE
CURRENT
BW ≤ 2 MHz
—
80
—
—
15
84
60
—
—
—
—
81
—
—
15
85
60
—
—
—
mA p-p
%
EFFICIENCY
START-UP
3
DELAY
60
60
ms
OVERSHOOT
1500
1500
mV
Notes
1. Up to 90% of full power is available from either output providing the total power does not exceed 30 watts.
2. The effect on the output voltage of either output (held at 3 watts) when the other output is varied from 3 to 27 watts.
3. A low output impedance power source is required on the input to realize this start-up time. If less than full surge
current is available, start-up time will be longer
PIN OUT
Squared corner and dot on
top of cover indicate pin one.
Pin
1
HR301-2805
Positive Input
Inhibit
Single Output
Positive Input
Inhibit
Dual Output
Positive Input
No connection
Positive Output
2
3
Sense Return
No connection
1
2
3
4
5
6
4
Output Common Output Common Output Common
5
Positive Output
Positive Sense
Case Ground
No connection
No connection
Input Common
Positive Output
No connection
Case Ground
No connection
No connection
Input Common
Negative Output
No connection
Case Ground
Inhibit
BOTTOM VIEW
HR300
6
See Section B8, case J5, for dimensions.
7
8
10
9
8
7
9
Input Common
Input Common
10
FIGURE 1: PIN OUT
MODEL NUMBERING KEY
HR30
2 - 28 12
Base Model
Number of Outputs
(1 = single, 2 = dual)
Input Voltage
Output Voltage
B4-41
HR300 SERIES
30 WATT
DC/DC CONVERTERS
Typical Performance Curves: 25°C Tc
88
86
88
86
84
82
80
78
76
74
72
70
68
88
18 V
86
19 V
84
82
80
78
76
74
72
70
68
84
82
18 V
28 V
28 V
28 V
80
36 V
78
36 V
76
36 V
74
72
70
68
5
10 15 20 25 30
Output Power (Watts)
5
10 15 20 25 30
5
10 15 20 25 30
Output Power (Watts)
Output Power (Watts)
HR301-2805 Efficiency
HR302-2812 Efficiency
HR301-2812 Efficiency
FIGURE 2
FIGURE 3
FIGURE 4
88
18
17
16
18
18 V
86
84
82
80
78
76
74
72
70
68
28 V
17
16
15
HR302-2815
HR301-2812
HR302-2812
HR301-2815
36 V
15
14
14
5
10 15 20 25 30
5
10 15 20 25 30
Output Power (Watts)
5
10 15 20 25 30
Output Power (Watts)
Output Power (Watts)
HR302-2815 Efficiency
HR301-2812 and HR301-2815
Low Line Dropout
HR302-2812 and HR302-2815
Low Line Dropout
FIGURE 5
FIGURE 6
FIGURE 7
24421-009-DTS Rev A
DQ# 2009
All technical information is believed to be accurate, but no responsibility is assumed
for errors or omissions. Interpoint reserves the right to make changes in products
B4-42
or specifications without notice. HR300 Series is
a trademark of Interpoint.
Copyright © 1991 - 1999 Interpoint. All rights reserved.
CASE J
CASES
Dot on top of case indicates pin one
CASE J
BOTTOM VIEW
See Figures 36 - 40
for pin configuration
1.350 max
(34.29)
2.720 max
(69.09)
Flange Thickness:
Cases J1 and J5
0.060 (1.52)
Case J2
0.073 (1.85) max
Cases J3 and J4
0.067 +0.005/-0.007 (1.70 +0.13/-0.8)
Materials
Header Case J1
Cold Rolled Steel/Nickel/Gold
Cases J2 - J5
Cold Rolled Steel/Nickel/Tin
Cover Case J1
Kovar/Nickel
Case J2 - J5
Cold Rolled Steel/Nickel/Tin
#52 alloy (all cases)
Pins
Case J1
MHV Series Triple – compression glass seal
MTR Series Triple – ceramic seal
Cases J2 - J5
compression glass seal
Case dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places
±0.01 (0.2) for two decimal places
unless otherwise specified
CAUTION
Heat from reflow or wave soldering may damage
the device. Solder pins individually with heat
application not exceeding 300°C for 10 seconds
per pin.
FIGURE 35: CASE J MAXIMUM DIMENSIONS
Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer
to the numerical dimensions for accuracy.
B8-22
CASE J
CASES
BOTTOM VIEW CASE J4 (Rev B)
Flanged cases: Designator required in Case Option position of model number.
FMD28-461 EMI Filter (down-leaded): Screening – Standard or ES
Squared corner and dot on top
of case indicate pin one.
Solder Seal
1.173
(29.79
1
2
3
0.040 dia.
(1.02)
0.162 dia
(4.11)
0.673
(17.09)
Solder Tip-off
5
4
0.173
(4.39)
0.000
FIGURE 39: CASE J4
BOTTOM VIEW CASE J5 (Rev B)
Flanged cases: Designator required in Case Option position of model number
for MHL Series and MTO Series only.
MHL Series, MTO Series, MTW Series: Screening – Standard or ES
HR300 Series: no screening options
Squared corner and dot on top
of case indicate pin one.
Solder Seal
1.173
(29.79
1
2
9
3
8
4
7
5
6
0.040 dia.
(1.02)
0.162 dia
(4.11)
0.673
(17.09)
Solder Tip-off
10
0.173
(4.39)
0.000
FIGURE 40: CASE J5 mounting hole dimension corrected to 2.150 (rev 20060626)
®
B8-25
QA SCREENING
HR PRODUCTS
HR PRODUCTS
TEST (HR products)
PRE-CAP INSPECTION
Method 2017
STANDARD
yes
yes
yes
yes
FINAL ELECTRICAL TEST MIL-PRF-38534, Group A
Subgroups 1 and 4: +25°C case
HERMETICITY TESTING
-3
Gross Leak, Dip (1 x 10 )
FINAL VISUAL INSPECTION
Method 2009
Test methods are referenced to MIL-STD-883 as determined by MIL-
PRF-38534.
Applies to the following products:
HR700 Series
HR300 Series
HR150 Series
HR120 Series
HR40 Series
C2-13
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