Interpoint HR122-2815 Dc/dc converters 28 volt input Datasheet

FEATURES
DC/DC CONVERTERS
28 VOLT INPUT
• –40°C to +85°C operation
• 16 to 40 VDC input
(19 to 40 VDC input for
15 volt output models)
• Fully Isolated
• Optocoupler feedback
• 600 kHz typical operating frequency
• Topology – Single Ended Forward
• 50 V for up to 50 ms transient protection
• Inhibit function
• Indefinite short circuit protection
• Up to 83% efficiency
HR120 SERIES
12 WATT
MODELS
VDC OUTPUT
SINGLE
5
12
15
DUAL
±12
±15
Size (max.): 1.460 x 1.130 x 0.330 inches (37.08 x 28.70 x 8.38 mm)
See Section B8, case E1 for dimensions.
Weight:
21 grams typical.
Screening: Standard only. See Section C2 for screening description.
DESCRIPTION
The HR120 Series™ of DC/DC converters offers up to 12 watts of
power from single or dual outputs in a single package over a –40°C
to +85°C temperature range. Thick film hybrid manufacturing technology produces high levels of miniaturization, giving the HR120
Series converters a low profile (0.330 inch), small board area (1.65
square inches), and high power density (22 watt/in3).
The parts are packaged in sealed steel enclosures, making them
ideal for use in high reliability applications. Each unit is guaranteed
to pass a hermeticity test with a maximum leak rate of 0.001 atmcc/sec.
DESIGN METHODOLOGY
The HR120 converters are switching regulators which use a quasisquare wave, single ended forward converter design with a nominal
switching frequency of 600 kHz. Isolation between input and output
circuits is provided with a transformer in the forward power loop and
a temperature insensitive optical link in the feedback control loop.
Output regulation is accomplished with constant frequency pulse
width modulation. Both line and load regulation are typically within
10 mV.
On dual output models, the positive output is independently regulated and the negative output is cross-regulated. Figures 7 and 8
illustrate what effects load changes have on the negative output.
Indefinite short circuit protection and overload protection are
provided by sensing output load current and restricting the output
current to approximately 125% of full load output current. Since the
output current is sensed in the secondary stage, the result is a
predictable, constant output current control with no foldback characteristics. HR120 converters are provided with internal filtering
elements on both the input and output to help reduce the need for
external components.
WIDE VOLTAGE RANGE
The 5 and 12 volt output models provide full power operation over
the input voltage range of 16 to 40 volts (19 to 40 volts for 15 volt
output models). Operation below 16 volts (or below 19 volts for the
15 volt output models), including operation in MIL-STD-704E emergency power conditions, is possible with derated output power.
Please refer to the low voltage drop-out graphs, Figures 9 and 10.
The HR120 Series provides full power operation at case temperatures from –40°C up to +85°C. Depending on operating levels, air
flow, and ambient temperature, heat sinking may be required.
INHIBIT FEATURE
An inhibit terminal is provided that can be used to disable internal
switching, resulting in a very low quiescent input current. An open
collector TTL compatible low (≤0.8 V) is required to control the
inhibit function. This level may be supplied by an open collector gate
since the inhibit pin is provided with an internal pull-up resistor.
B4-47
HR120 SERIES
12 WATT
DC/DC CONVERTERS
ABSOLUTE MAXIMUM RATINGS
INHIBIT
TYPICAL CHARACTERISTICS
Input Voltage
• 16 to 40 VDC
• 19 to 40 VDC 15 volt outputs
Output Power
• 12 watts (10 watts HR121-2805)
Lead Soldering Temperature (10 sec per pin)
• 300°C
Storage Temperature Range (Case)
• –55°C to +125°C
Inhibit TTL Open Collector
• Logic low (output disabled)
Logic low 0.8 V max
Inhibit pin current 4 mA max
• Referenced to input common
• Logic high (output enabled)
Open collector
Output Voltage Temperature Coefficient
• 150 ppm/°C, typical
Input to Output Capacitance
• 50 pF, typical
Current Limit
• 125% of full load, typical
Isolation
• 100 megohm minimum at 500 V
Conversion Frequency
• 600 kHz typical
Inhibit Pin Voltage (unit enabled)
• 8 to 11 V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 16 to 40 VDC continuous
• 19 to 40 VDC continuous 15 volt outputs
• 50 V for 50 msec transient
Case Operating Temperature (Tc)
• –40°C to +85°C full power
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER
HR121-2805
HR121-2812
HR121-2815
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OUTPUT VOLTAGE
4.95
5.0
5.05
11.88
12
12.12
14.85
15
15.15
VDC
OUTPUT CURRENT
—
—
2.0
—
—
1.0
—
—
0.8
A
—
—
10
—
—
12
—
—
12
W
OUTPUT POWER
OUTPUT RIPPLE
CONDITIONS
MIN. TO MAX. VIN
10 kHz to 2 MHz
—
40
60
—
30
60
—
25
50
mV p-p
LINE REGULATION
MIN. TO MAX. VIN
—
10
50
—
10
50
—
10
50
mV
LOAD REGULATION
NO LOAD TO FULL
—
10
50
—
10
50
—
10
50
mV
INPUT VOLTAGE
NO LOAD TO FULL
16
28
40
16
28
40
19
28
40
TRANSIENT 50 ms
—
—
50
—
—
50
—
—
50
INPUT CURRENT
NO LOAD
—
20
30
—
20
30
—
20
30
FULL LOAD
—
—
478
—
—
548
—
—
535
INHIBITED
—
2
3
—
2
3
—
2
3
VDC
mA
INPUT RIPPLE
CURRENT
10 kHz TO 2 MHz
EFFICIENCY
LOAD FAULT1
START-UP
—
135
180
—
150
200
—
150
220
mA p-p
74
77
—
77
81
—
80
83
—
%
POWER DISSIPATION
OVERLOAD
—
—
5
—
—
5
—
—
5
SHORT CIRCUIT
—
–
3.5
—
—
2.8
—
—
2
DELAY
—
180
300
—
80
200
—
150
250
Notes
1. Indefinite short circuit protection not guaranteed above 85°C case temperature.
B4-48
W
ms
HR120 SERIES
12 WATT
DC/DC CONVERTERS
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
DUAL OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
OUTPUT RIPPLE
VOLTAGE
MIN
HR122-2815
TYP
MAX
MIN
+VOUT
11.88
12.0
12.12
14.85
15.0
15.15
– VOUT
11.82
12.0
12.18
14.77
15.0
15.23
OUTPUT CURRENT1, 2
OUTPUT POWER2
HR122-2812
TYP
MAX
CONDITION
—
0.5
1.0
—
0.4
0.8
+VOUT
—
—
10.8
—
—
10.8
– VOUT
—
—
10.8
—
—
10.8
TOTAL
—
—
12
—
—
12
10 kHz TO 2 MHz
—
30
60
—
30
60
+VOUT
—
5
50
—
5
50
MIN. TO MAX. VIN
– VOUT
—
30
150
—
30
150
LOAD REGULATION
+VOUT
—
5
50
—
10
50
NO LOAD TO FULL
– VOUT
—
30
150
—
30
150
20% TO 80% LOAD3
—
5
10
—
4
8
50% LOAD4
—
4
5
—
3
5
INPUT VOLTAGE
INPUT CURRENT
VDC
A
LINE REGULATION
CROSS REGULATION
UNITS
W
mV p-p
mV
mV
%
CONTINUOUS
16
28
40
19
28
40
TRANSIENT 50 ms
—
—
50
—
—
50
NO LOAD
FULL LOAD
INHIBITED
—
—
—
25
—
1.9
35
545
3
—
—
—
25
—
1.9
35
540
3
mA
VDC
INPUT RIPPLE
CURRENT
10 kHz TO 2 MHz
EFFICIENCY
LOAD FAULT5
START-UP
—
175
240
—
175
240
mA p-p
78
81
—
80
83
—
%
POWER DISSIPATION
OVERLOAD
—
—
2.8
—
—
2
SHORT CIRCUIT
—
—
5
—
—
5
DELAY
—
150
250
—
150
250
W
ms
Notes
1. Applies to both outputs.
2. Maximum combined output power is 12 watts. A maximum of 90% is available from either output.
3. 20% to 80% load on the positive output and 80% to 20% on the negative output. See Figure 8.
4. 50% load on the positive output and 50% to 20% load on the negative output. 50% load on the negative output and
50% to 20% load on the positive output. See Figure 7.
5. Indefinite short circuit protection not guaranteed above 85°C case temperature.
PIN OUT
Pin
1
2
3
4
5
6
7
8
Single Output
Inhibit
No connection
Output Common
Positive Output
No connection
Case Ground
Input Common
Positive Input
Dual Output
Inhibit
Positive Output
Output Common
Negative Output
No connection
Case Ground
Input Common
Positive Input
Squared corner and dot on
top of cover indicate pin one.
MODEL NUMBER KEY
HR12
2 - 28
12
Base Model
1
2
3
4
5
Number of Outputs
(1 = single, 2 = dual)
Input Voltage
BOTTOM VIEW
HR120
Output Voltage
8
7
6
See Section B8, case E1, for dimensions
FIGURE 1: PIN OUT
B4-49
DC/DC CONVERTERS
HR120 SERIES
12 WATT
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, unless otherwise specified.
90
90
90
16V
80
40V
70
28V
60
50
80
40V
70
28V
60
2
4
6
8
10
12
50
14
28V
2
6
4
10
8
12
50
14
2
4
6
8
10
12
Output Power (Watts)
Output Power (Watts)
Output Power (Watts)
HR121-2805 Efficiency
HR121-2812 Efficiency
HR121-2815 Efficiency
Negative Output Voltage Change (%)
90
19V
16V
80
80
Efficiency (%)
40V
70
28V
40V
70
28V
60
60
50
2
4
6
8
10
12
14
2
4
6
8
10
14
FIGURE 4
FIGURE 3
90
Efficiency (%)
40V
70
60
FIGURE 2
50
Efficiency (%)
Efficiency (%)
Efficiency (%)
19V
16V
80
12
Output Power (Watts)
Output Power (Watts)
HR122-2812 Efficiency
HR122-2815 Efficiency
14
10
8
6
Cond. A
2812
4
2
2815
0
2
–4
2812
–6
Cond. B
–8
–10
0
10
2
30
40
50
Output Load (%)
Condition A: 50% Load Pos. Vout, 50% to 20% Neg. Vout
Condition B: 50% Load Neg. Vout, 50% to 20% Pos. Vout
HR122 Negative Output Voltage
Cross Regulation
FIGURE 6
19
15
18
10
17
5
0
2815
–5
2812
–10
–15
–20
19
18
2815
16
15
2812
14
13
2805
0
20
40
60
80
100
HR122 Negative Output Voltage
Cross Regulation
FIGURE 8
11
17
2815
16
15
14
13
2812
12
12
Output Load (%)
Positive Output 20% to 80% Load
Negative Output 80% to 20% Load
B4-50
FIGURE 7
Input Voltage (Volts)
20
Input Voltage (Volts)
Negative Output Voltage Change (%)
FIGURE 5
11
2
4
6
8
10
12
14
2
4
6
8
10
12
14
Output Power (Watts)
50 mV Drop
Output Power (Watts)
50 mV Drop
HR121 Low Line Dropout
HR122 Low Line Dropout
FIGURE 9
21821-009-DTS Rev A
DQ# 2011
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. HR120 Series is a trademark of Interpoint.
Copyright © 1994 - 1999 Interpoint. All rights reserved.
FIGURE 10
CASES
CASE E
Squared corner and dot on top
of case indicate pin one.
CASE E
BOTTOM VIEW
See Figures 16 – 18
for pin configurations.
1.130 max
(28.70)
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover Kovar/Nickel
(SMHF Series
Cold Rolled Steel/Nickel/Gold)
Pins
#52 alloy/Gold
compression 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
1.460 max
(37.08)
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 15: CASE E MAXIMUM DIMENSIONS
BOTTOM VIEW CASE E1
MHF+ Series Single and Dual: Screening – Standard, ES, or 883
MHF Series and LIM5050 Module: Screening – Standard or ES
SMHF Series Single and Dual and SLIM5050 Module:
Screening – Space Standard, H, or K
HR120 Series: No screening options
Seam Seal
Projection Weld
Squared corner and dot on top
of case indicate pin one.
0.960
(24.38)
1
2
3
4
5
0.030 dia.
(0.76)
0.205
(5.21)
0.000
0.25 (6.35)
0.000
0.330 max
(8.38)
0.25 (6.35)
0.000
0.330 max
(8.38)
7
6
0.505
(12.83)
0.705
(17.91)
0.905
(22.99)
1.105
(28.07)
8
0.160
(4.06)
0.000
FIGURE 16: CASE E1
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.
B8-10
QA SCREENING
HR PRODUCTS
HR PRODUCTS
TEST (HR products)
PRE-CAP INSPECTION
Method 2017
FINAL ELECTRICAL TEST MIL-PRF-38534, Group A
Subgroups 1 and 4: +25°C case
HERMETICITY TESTING
Gross Leak, Dip (1 x 10-3)
FINAL VISUAL INSPECTION
Method 2009
STANDARD
yes
yes
yes
yes
Test methods are referenced to MIL-STD-883 as determined by MILPRF-38534.
Applies to the following products:
HR700 Series
HR300 Series
HR150 Series
HR120 Series
HR40 Series
C2-13
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