Crane DCH0512D Dc/dc converters 5 or 28 volt input Datasheet

DCH SERIES
3 WATT
DC/DC CONVERTERS
5 OR 28 VOLT INPUT
Features
•
NOT RECOMMENDED FOR NEW DESIGNS
–55°C to 100°C
•
5 or 28 VDC input
•
Fully isolated
•
Output regulated from input side
•
100 kHz typical switching frequency
•
Topology – Push-Pull DC/DC Converter
•
Up to 75% efficiency
•
No minimum load
•
Output capacitor suggested
Size (max.):
Weight:
Screening:
MODELS
VDC OUTPUT
SINGLES
DUALS
5
12
±12
±15
0.975 x 0.800 x 0.350 inches (24.77 x 20.32 x 8.89 mm)
See case A3 for dimensions.
20 grams typical
Standard or ES. See “100°C Non-QML Products
– Environmental Screening (Standard & ES)” screening table for
screening options.
DESCRIPTION
The DCH Series™ offers isolated, unregulated DC/DC converters
with up to 3 watts of output power in a low profile (0.350 max.) metal
package. Single and dual output models are available with input voltages of 5 or 28 VDC. DCH Series converters operate over a –55°C to
+100°C temperature range.
Figure 1 shows a standard connection scheme for a dual output
model. Users may also elect to use a dual output device to provide a
single output at double the rated output voltage. The double voltage
connection is achieved by leaving the normal output common pin (Pin
15) unconnected and using either the positive or negative Vout pin for
the output common connection.
DCH Series converters use a non-saturating core circuit operating at
a frequency of approximately 100 kHz, which reduces reflected input
ripple and minimizes EMI/RFI problems. For applications requiring
MIL-STD-461C, CEO3, reflected input ripple levels, refer to Section B5
or contact your Interpoint representative for matching EMI filters.
On all DCH Series models, a tantalum capacitor with a minimum
value of 22 μF and an appropriate voltage rating should be connected
between the output common and the output line(s) to minimize output
ripple.
FIGURE 1:
DUAL DCH CONVERTER
WITH EXTERNAL CAPACITORS
Positive
Input
28 V
Positive
Output
+
Output Common
+
Input
Common
Negative
Output
Load
Load
Typical Performance Curves: 25°C Tc, nominal Vin
Efficiency
DCH2805S
FIGURE 2
Output Current vs Output Voltage
DCH2805S
FIGURE 3
1
DCH SERIES
3 WATT
DC/DC CONVERTERS
ABSOLUTE MAXIMUM RATING
TYPICAL CHARACTERISTICS
Output Power
• 3 watts
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –55°C to +125°C
Output Voltage Tolerance (Full Load)
• 5 volt output models ±0.25
• 15 volt output models ±0.5
Line Regulation
• Output is directly proportional to input voltage.
Output Voltage Temperature Coefficient
• 0.02%/°C maximum
Converter Frequency
• 100 kHz typical
Isolation
• 100 megohm minimum at 500 V
RECOMMENDED OPERATING CONDITION
Input Voltage Range (VDC)
• 5 volt input models
4.0 to 6.5
• 28 volt input models
20.0 to 32.0
Case Operating Temperature (Tc)
• –55°C to +100°C full power
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
OUTPUT
CURRENT
NOMINAL VDC
OUTPUT
CURRENT
NOMINAL VDC
TC = -55°C TO
+100°C MAX
TC = -55°C TO
+100°C MAX
mA
W
EFFICIENCY
FULL LOAD
LOAD
REGULATION
50% TO FULL
LOAD
TYP
mV
INPUT
CURRENT2
10% LOAD
OUTPUT
RIPPLE
MAX
mA
MAX
mV-pp
INPUT
VOLTAGE
OUTPUT
VOLTAGE
MODEL
NUMBER
NOMINAL
VDC
NOMINAL
VDC
DCH0505S
5
5
400
2.0
67
470
220
300
DCH0512S
5
12
208
2.5
72
830
250
200
DCH0512D
5
±12
±104
2.5
72
830
250
100
DCH0515D
5
±15
±83
2.5
72
830
250
100
DCH2805S
28
5
500
2.5
68
450
50
300
DCH2812S
28
12
250
3.0
75
375
50
200
DCH2812D
28
±12
±125
3.0
75
375
50
100
DCH2815D
28
±15
±100
3.0
75
375
50
100
MIN
%
Notes
1. Nominal output voltage is correct only for nominal input voltage. Output voltage changes in proportion to input voltage.
2. Output ripple results require the connection of a tantalum capacitor (22 μF minimum) across each output.
PIN OUT
Pin
1
2
3
8
9
14
15
16
Designation
Positive Input
No Connection
Input Common
No Connection
Case
Negative Output1
Output Common1
Positive Output
Note
1. Pins 14 and 15 are connected internally on single output models.
MODEL NUMBERING KEY
Dot on top of cover
indicates pin one.
DCH
1 2 3
8
BOTTOM VIEW
DCH
16 15 14
9
See case A3 for dimensions
FIGURE 6: PIN OUT
28 12
D / ES
Base Model
Input Voltage
Output Voltage
Number of Outputs
(S = single, D = dual)
Screening
(Standard screening has no designator
in this position.)
2
DCH SERIES
3 WATT
DC/DC CONVERTERS
BOTTOM VIEW CASE A3
Seam Seal
Projection Weld
Dot on top of case
indicates pin one.
0.805 max (20.45)
0.697 (17.70)
1 2 3
8
16 15 14
9
Seal hole: 0.056 ±0.002 (1.42 ±0.05)
0.835 (21.21)
0.980 max (24.89)
0.000
0.27 ±0.02
(6.9 ±0.5)
0.000
0.350 max
(8.89)
0.27 ±0.02
(6.9 ±0.5)
0.000
0.350 max
(8.89)
0.097
(2.46)
0.000
0.135 (3.43)
0.235 (5.97)
0.335 (8.51)
0.018 ± 0.002 dia.
(0.46 ± 0.05)
Case dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places
±0.01 (0.3) for two decimal places
unless otherwise specified
Materials
Header
Kovar/Nickel
Cover
Kovar/Nickel
Pins
Kovar/Nickel/Gold, matched glass seal
Case dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places
±0.01 (0.3) 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.
Case A3, Rev C, 20060731
Please refer to the numerical dimensions for accuracy. All information is believed to be accurate,
but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make
changes in products or specifications without notice.
Copyright © 1999-2006 Interpoint Corp. All rights reserved.
FIGURE 7: CASE A3
3
DCH SERIES
3 WATT
DC/DC CONVERTERS
100°C NON-QML PRODUCTS—
ENVIRONMENTAL SCREENING (STANDARD & ES)
TEST
100°C
100°C
STANDARD
1
/ES
non QML
non QML1
yes
yes
no
yes
no
yes
no
yes
yes
yes
Fine Leak, Method 1014, Cond. A
no
yes
Gross Leak, Method 1014, Cond. C
no
yes
yes
no
yes
yes
Pre-cap Inspection
Method 2017, 2032
Temperature Cycle (10 times)
Method 1010, Cond. B, -55°C to 125°C ambient
Constant Acceleration
Method 2001, 500 g
Burn-In
96 hours, typical case temperature 100°C case
2
Final Electrical Test MIL-PRF-38534, Group A
Subgroups 1 and 4: +25°C case
Hermeticity Test
-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.
Notes:
1. Non-QML products do not meet all of the requirements of MIL-PRF-38534
2. Burn-in is still air with an ambient temperature designed to bring the case temperature to
100°C
24600-001-DTS Rev B
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 or specifications without notice. DCH Series is a trademark of Interpoint.
Copyright © 1991 - 2006 Interpoint. All rights reserved.
4
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