Interpoint HR700 Â 40â°c to 85â°c operation 50 v for 50 ms transient protection Datasheet

DC/DC Converters
28 Volt Input
hr700
Series 70 Watt
NOT RECOMMENDED FOR NEW DESIGNS
Features
•
–40°C to + 85°C operation
•
50 V for 50 ms transient protection
•
•
•
•
dual
Fully isolated
±12
±15
Fixed frequency
TRIPLE
+5 & ±12
+5 & ±15
Remote sense on single models
•
Inhibit/sync function
•
Up to 84% efficiency
•
models VDC Output
19 to 40 VDC input
Indefinite short circuit protection
Size (max.): 3.20 x 2.46 x 0.595 inches (81.3 x 62.5 x 15.11 mm)
See case L for dimensions.
Weight: 140 grams typical
Screening: Standard only. See screening table for more information.
description
HR700 Series DC/DC converters offer up to 70 watts of power from
single, dual, or triple outputs in one package. The 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
The HR700 converters are manufactured using techniques that
provide very small size and low profile components. Each converter
uses less than eight square inches of board areas and is 0.595 inches
high or less. The overall power density is 20 watts per cubic inch.
high reliability
Assembled using thick-film technology, the HR700 parts use the
same manufacturing procedures and quality controls that we apply
to converters designed for commercial airliners, the space shuttle,
advanced fighter aircraft, and other high reliability applications. The
steel cases are hermetically sealed in a dry nitrogen environment and
are guaranteed a maximum leak rate of less than 10-3 atm-cc/sec. All
devices are 100% electrically tested.
high performance
The HR700 series parts are high efficiency, low noise, pulse-width
modulated converters which use a quasi-square wave forward
converter design with a nominal switching frequency of 245 kHz.
Isolation between input an output is provided with a transformer in the
forward power loop and a wide band, temperature insensitive, optical
link in the feedback control loop. Short circuit protection is
Crane Aerospace & Electronics
Electronics Group (Interpoint Brand)
PO Box 97005 • Redmond WA 98073-9705
425.882.3100 • [email protected]
www.interpoint.com
provided by detecting peak primary switching current on a cycle basis
and limiting it to approximately 130% of the full load input current. This
method results in quick and positive current limiting under short circuit
conditions.
HR700 Series DC/DC converters are designed to provide full power
operation over the input voltage range of 19 to 40 VDC. Operation
below an input of 19 volts is possible with derated output power.
Outputs are available as 5, 12, and 15 VDC single, dual and triple
outputs. The converters typically provide greater than 80% efficiency
over the entire input range. Line regulation is typically within 0.1% and
load regulation within 0.2%.
low noise
The HR700 Series converters offer low noise on both the input and
output lines. A two section, four pole, LC input filter is included to
provide very low reflected line ripple current. Output ripple is maintained at less than 50 mV p-p for single and dual models and 85 mV
p-p for triple output models.
inhibit/sync feature
An inhibit/sync pin is standard on all models of the HR700 Series
converters. The pin serves as both an output inhibit and as a synchronization input. In the inhibit mode an open collector TTL compatible
low (<0.8 V) will disable internal switching thereby inhibiting the unit’s
output. Inhibiting in this manner results in an extremely low quiescent
current.
Page 1 of 7
HR700 Rev C - 20100212
DC/DC Converters
absolute maximum ratings
sync and inhibit
Output Power
• 60 to 70 watts depending on model
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –55°C to +125°C
Sync In (245 to 370 kHz.)
• Duty cycle 70% min, 98% max.
• Logic low 0.8V max
• Logic high 4.5 V min
• Referenced to input common
• If sync is not used, leave unconnected
Inhibit TTL Open Collector
• Logic low (output disabled)
Inhibit pin current 1 mA max
• Referenced to input common
• Logic high (output enabled)
V = ≥ 4.5V
recommended operating conditions
Input Voltage Range
• 19 to 40 VDC continuous (see Derating)
Case Operating Temperature (Tc)
• –40°C to +85°C full power
derating Output Power/Current and input voltage
Temperatures are referenced to the temperature at the converter’s baseplate
• Linearly derate output power/current from 100% at 85°C to 0% at 125°C.
• Above 105°C linearly derate steady state input voltage to 33 volts at 125°C.
• Indefinite short circuit protection is not guaranteed above 85°C case.
• Operation below an input voltage of 19 volts, including operation in MILSTD-704E emergency power conditions, is possible with derated output
power. See Figures 10 and 11.
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hr700
series 70 Watt
Page 2 of 7
HR700 Rev C - 20100212
typical characteristics
Output Voltage Temperature Coefficient
• 150 ppm/°C, typical
Input to Output Capacitance
• 160 pF, typical
Isolation
• 100 megohm minimum at 500 V
Conversion Frequency
• Free run mode 245 kHz, typical
Inhibit Pin Voltage (unit enabled)
• 4.5 to 5.5 V
DC/DC Converters
hr700
series 70 Watt
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
dual and triple output models
PARAMETER
CONDITIONS
output voltage
output
current1,2
line regulation
cross
regulation4
TYP
MAX
— 4.90
5.05
5.15
4.95
5.10
main
—
—
—
—
—
2.92
main
—
—
±dual
—
total
—
main
—
dual
—
—
—
30
5.5 —
—
—
66.5
—
70
—
—
—
100 —
—
—
—
4.0
2.33
4.4
—
1.67
—
—
—
20
66.5
—
70
—
—
100
35
—
—
30
10.0
4.90
4.2 —
4.0
10.0
1.33
3.33
50
50
—
20
20
50
—
20
50
—
60
—
—
60
—
50
100
—
50
100
—
50
100
—
50
100
2
25
—
2
25
100
225
—
100
225
5
30
—
5
30
main
—
—
— —
—
— —
dual
—
10
30 —
10
30
main
—
—
— —
—
— —
dual
—
25
50 —
25
50
—
300
600
—
300
600
—
1.5
3.0
—
1.5
3.0
—
—
—
—
—
—
—
2.0
4.0
—
2.0
3.5
—
—
— —
—
—
—
—
— —
—
— —
2.3
6.0
—
2.3
5.0
—
—
— —
—
—
—
5.4
9.0
—
5.0
7.0
19
28
40
19
28
40
19
28
40
19
28
40
100
—
100
—
115
—
dual
main +po = 33 w
dual
+po = 3 w to 27 w
-po = 27 w to 3 w
main +po = 3 w to 30 w
dual
±po = 15 w
input voltage
input refl. ripple
MAX MIN
dual
+po = 3 w to 35 w
-po = 35 w
input current
TYP
±15.05 ±15.30 ±15.75
+po = 20 w to 50 w
-po = 50 w to 20 w
cross
regulation5
hr703-28515
MIN
±11.50 ±11.80 ±12.10
—
—
hr703-28512
MAX
±14.75 ±15 ±15.25
35
— —
TYP
±11.75 ±12 ±12.25
vin =
19 to 40
no load
to full
MIN
—
full load
bw ≤ 2 MHz
—
hr702-2815
MAX
main
vin =
19 to 40
load regulation3
TYP
dual
full
load
output power1,2
output ripple
hr702-2812
MIN
75
75
—
no load
—
inhibited
85
85
115
—
25
35
—
25
35
—
30
35
—
30
35
full load
bw ≤ 10 MHz
—
15
50
—
15
50
—
15
50
—
15
50
UNITS
VDC
A
W
mV p-p
mV
mV
%
%
VDC
mA
mA p-p
efficiency
80
83
—
80
83
—
79
84
—
79
84
—
%
startup delay
—
15
25
—
15
25
—
6
10
—
6
10
ms
Notes
1. On dual output models the maximum combined output power is 70 watts.
A maximum of 95% (66.5 W) is available from any single output.
2. On triple output models the maximum combined output power is 60 watts.
A maximum of 50 watts is available from a single output.
3. Balanced loads
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4. Regulation effect on the negative dual output during the defined
conditions.
5. Regulation effect on both dual outputs during the defined conditions.
Page 3 of 7
HR700 Rev C - 20100212
DC/DC Converters
Thermal Management
Calculating Maximum Ambient Temperature
The HR700 Series of DC/DC converters has an upper operating
temperature of + 85°C at the baseplate of the case. The degree of
heat sinking required to remain within this limit may be determined
from Figure 1 which shows the maximum allowed internal power dissipation (PDISS vs. ambient temperature for various heat sink thermal
resistances. PDISS may be calculated as:
PDISS = POUT / efficiency – POUT
The efficiency for all combinations of POUT and VIN for the various
models may be obtained from the graphs on the preceding pages.
Example: Converter = HR702-2815, TAMB = 70°C,
VIN = 28 VDC, POUT = 45 watts
Efficiency = 85% (From Figure 7)
PDISS = (45 / 85) – 45 = 7.95 watts
From Figure 1 we can see that this situation will require thermal resistance of approximately 4.5°C / watt.
Conversely we may also find the maximum ambient temperature
which can be tolerated if we know the heat sink thermal resistance.
Example: Converter = HR701-2805, VIN = 28 VDC, POUT = 45 W.
Thermal Resistance = 3°C / watt.
Efficiency = 83.5% (From Figure 3)
PDISS = (45 / 0.835) – 45 = 8.89 watts.
hr700
series 70 Watt
From Figure 1 we can see that the maximum allowed am­bient temperature is ap­prox­imately 75°C.
Heat Sink Recommendations
An MFW Series converter in still air (other than convective currents)
and with no conductive cooling paths other than through electrical
connections at the pins will exhibit a thermal resistance of approximately 4°C / watt. In cases where this value proves to be too high it is
recommended that additional heat sinking be supplied. The simplest
method of accomplishing this is to firmly attach the converter to a PCB
thereby providing a conductive thermal path. Secondly it is recommended that airflow be provided over the converter. Although each
situation requires a thorough thermal analysis these two measures
can reduce the thermal resistance to as low as 2°C / watt. If calculations indicate further heat sinking is required it is recommended that
additional thermal mass be provided either under the base plate or on
top of the converter’s mounting flanges or both.
PIN OUT
20
W
/W C/W °C/W °C/
4°CU=3° U=2 U=0
U=
Watts
15
10
5
PinDual OutputTriple Output
1
Positive Input
Positive Input
2
Case Ground
Case Ground
3
Input Common
Input Common
4
Inhibit/Sync In
Inhibit/Sync In
5
Negative Output
Neg. Aux. Output
6
Positive Output
Positive Aux. Output
7, 8 Output Common
Output Common
9, 10 No Connection
Main (+5) Output
Squared corner indicates pin one.
20° 40° 60° 80° 100° 120° 140°
Degrees Centigrade
Internal Power Dissipation (max)
vs. Ambient Temperature
Figure 1
1
2
3
4
BOTTOM VIEW
MFW
See case L for dimensions.
9
7
5
10
8
6
Figure 2: Pin Out
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Page 4 of 7
HR700 Rev C - 20100212
DC/DC Converters
hr700
series 70 Watt
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
87
19 V
85
83
83
83
81
79
28 V
77
75
40 V
81
79
28 V
77
75
40 V
73
71
EFFICIENCY (%)
85
73
30
40
50
60
10
20
30
40
50
60
75
40 V
20
HR702-2815
EFFICIENCY VS. LINE & LOAD
40
50
60
70
HR703-28512
EFFICIENCY VS. LINE & LOAD
Figure 4
Figure 3
30
OUTPUT POWER (WATTS)
HR702-2812
EFFICIENCY VS. LINE & LOAD
Figure 5
19
83
81
28 V
77
75
40 V
INPUT VOLTAGE (VOLTS)
19 V
85
73
28 V
77
10
OUTPUT POWER (WATTS)
79
79
70
OUTPUT POWER (WATTS)
87
81
71
70
HR702-2815
18
HR701-2815
INPUT VOLTAGE (VOLTS)
20
19 V
73
71
10
EFFICIENCY (%)
87
19 V
85
EFFICIENCY (%)
EFFICIENCY (%)
87
17
HR701-2812
16
HR701-2815
15
18
HR702-2812
17
HR703-28512
HR703-28515
16
15
71
10
20
30
40
50
60
10
70
20
30
40
50
60
70
10
OUTPUT POWER (WATTS)
OUTPUT POWER (WATTS)
Figure 6
model numbering key
Base Model
HR70
2 - 28
Number of Outputs
(2 = dual, 3 = triple)
Input Voltage
Output Voltage
(Main and aux. Vout for triple models)
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40
50
60
Figure 8
Figure 7
Figure 9
30
70
LOW LINE DROPOUT VS LOAD
(50mV DROP)
LOW LINE DROPOUT VS
LOAD (50mV DROP)
HR703-28515
EFFICIENCY VS. LINE & LOAD
20
OUTPUT POWER (WATTS)
Page 5 of 7
HR700 Rev C - 20100212
12
DC/DC Converters
hr700
series 70 Watt
CASE L
Squared corner indicates pin one
Solder Seal
3.20 max (81.3)
0.141
dia. x 6
(3.58)
2.850 (72.39)
1
.0.040 +0.005/-0.002
(1.02 +0.13/-0.05)
2
3
4
BOTTOM VIEW
1.600 (40.64)
Solder Tip-off
9
7
5
10
8
6
0.550 (13.97)
0.350 (8.89)
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
Materials
Header Cold Rolled Steel/Nickel/Tin
Cover Cold Rolled Steel/Nickel/Tin
Pins
#52 alloy pins 1-4, and 9-10
#52 alloy with copper core pins 5-8, ceramic seal
Case L, Rev C, 20060803
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 9: Case l
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Page 6 of 7
HR700 Rev C - 20100212
2.280 (57.91)
2.460 max (62.50)
1.625 (41.28)
1.325 (33.66)
1.425 (36.20)
1.025 (26.04)
0.825 (20.96)
0.625 (15.88)
0.00
0.180 (4.57)
0.250 +0.05/-0.00
(6.35 +1.3/-0.0)
0.000
0.040 +0.007/-0.000
(1.02 +0.18/-0.00)
0.595 max
(15.11)
0.000
DC/DC Converters
hr700
series 70 Watt
HR INDUSTRIAL (STANDARD, NON-QML) PRODUCTS
ENVIRONMENTAL SCREENING
hr industrial
standard
nOn-Qml1
test perFOrmed
Pre-cap Inspection
Method 2017, 2032
yes
Final Electrical Test MIL-PRF-38534, Group A
Subgroups 1 and 4: +25°C case
yes
Hermeticity Test
Gross Leak, Dip (1 x 10-3)
yes
Final visual inspection
Method 2009
yes
Test methods are referenced to mIL-STD-883 as determined by mIL-PRF-38534.
Notes:
1. Standard, non-QmL products, do not meet all of the requirements of mIL-PRF-38534.
HR700 Series DC/DC Converter, HR700 Rev C - 20100212. This revision supersedes all previous releases. 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. HR700 Series is a trademark of Interpoint. Copyright © 1999 - 2010 Interpoint Corporation. All rights reserved. www.interpoint.com
Page 7 of 7
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