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HR41-2812 Datasheet(PDF) 2 Page - Crane Aerospace & Electronics.

Part No. HR41-2812
Description  DC/DC CONVERTERS 28 VOLT INPUT
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Manufacturer  CRANE [Crane Aerospace & Electronics.]
Direct Link  http://www.craneae.com
Logo CRANE - Crane Aerospace & Electronics.

HR41-2812 Datasheet(HTML) 2 Page - Crane Aerospace & Electronics.

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SINGLE AND DUAL OUTPUT EXTERNAL CAPACITORS
OPERATION WITHOUT EXTERNAL CAPACITORS WILL RESULT IN DAMAGE TO THE INTERNAL CIRCUITRY.
TYPICAL CHARACTERISTICS
RECOMMENDED OPERATING CONDITIONS
INHIBIT
Required
Minimum
Model
Connection
Capacitor Value1
Single Output
Positive Output (12 & 13) to
HR41-2805
Output Common (8 & 9)
220 µF, 10 V
Positive Output (10) to
Dual Outputs2
Output Common (8)
100 µF, 25 V
HR42-2812
External Capacitor (14) to
100 µF, 25 V
and
Output Common (8)3
HR42-2815
Negative Output (12) to
10 µF, 25 V
Output Common (8)
B4-52
HR40 SERIES
4 WATT
DC/DC CONVERTERS
ABSOLUTE MAXIMUM RATINGS
SINGLE AND DUAL OUTPUT MODELS
HR41-2805
HR42-2812
HR42-2815
PARAMETER1
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OUTPUT VOLTAGE
POUT = 2 W
4.90
5.0
5.10
±11.88
±12
±12.12
±14.85
±15
±15.15
VDC
OUTPUT CURRENT
18 TO 32 VIN
700
±167
±133
mA
OUTPUT POWER2
Tc = –40°C TO +85°C
3.5
4.0
4.0
W
OUTPUT RIPPLE
BW = 1 MHz
75
150
75
150
75
150
mV p-p
LINE REGULATION
18 - 32 VIN, POUT = 2 W
5
10
10
20
10
20
mV
LOAD REGULATION
NO LOAD TO FULL
25
50
12
24
12
24
mV
INPUT VOLTAGE
Tc = –40°C TO +85°C
16
28
32
16
28
32
16
28
32
VDC
TRANSIENT 50 ms
40
40
40
V
INPUT CURRENT
NO LOAD
7
10
10
15
10
15
FULL LOAD
192
213
213
mA
INHIBITED
15
15
15
EFFICIENCY
FULL LOAD
68
72
70
75
70
75
%
Input Voltage
• 16 to 32 VDC
Output Power
• 3.2 to 4 watts depending on model
Lead Soldering Temperature (10 sec)
• 300°C
Storage Temperature Range (Case)
• –40°C to +125°C
Output Voltage Temperature Coefficient
• HR41-2805 100 ppm/°C typ, 200 max.
• HR42-28XX 50 ppm/°C typ.
• HR43-28XX 100 ppm/°C typ.
Input to Output Capacitance
• 60 pF typical
Isolation
• 100 megohm minimum at 500 V
Conversion Frequency
• Single and dual output models, 80 kHz at
full load typical, variable frequency
• Triple output models, 200 kHz typical
fixed frequency
Inhibit Pin Voltage (unit enabled)
• 12 to 28 V
Input Voltage Range
• 16 to 32 VDC continuous
• 40 V for 50 ms transient
Case Operating Temperature (Tc)
• –40°C to +85°C full power
• –40°C to +105°C absolute
Derating Output Power/Current
• Linearly from 100% at 85°C to 0% at 105°C
Inhibit TTL Open Collector
• Logic low (output disabled)
≤ 0.8 V
• Referenced to input common
• Logic high (output enabled)
≥ 12 V
Notes
1. External capacitors required to prevent damage to internal circuitry (see
Table 1 for specifications).
2. Dual output models deliver up to 4 watts total for balanced or unbalanced
loads, however, the positive output should carry at least 25% of the total load.
FEEDBACK
LOGIC
TIMING
CONTROL
SWITCH
10
POSITIVE
OUTPUT
8
12
1, 2
POSITIVE
INPUT
15
INHIBIT
17, 18
INPUT
COMMON
14
NEGATIVE
OUTPUT
OUTPUT
COMMON
EXTERNAL
CAPACITOR
TERMINAL
100
µF
10
µF
100
µF
+
+
+
EXTERNAL
CAPACITORS
VOLTAGE
REGULATOR
FIGURE 1: DUAL OUTPUT EXTERNAL CAPACITOR CONNECTIONS
Table 1 Notes
1. Capacitors should be high quality, low ESR components —
solid tantalum is recommended.
2. See Figure 1 for connection diagram
3. Place positive side of capacitor toward pin 8.
TABLE 1: EXTERNAL CAPACITOR REQUIREMENTS
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
WARNING:EXTERNAL CAPACITORS REQUIRED


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