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參數(shù)資料
| 型號： | HR703-28512 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 2/9頁 |
| 文件大小： | 120K |
| 代理商： | HR703-28512 |
SYNC AND INHIBIT
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
B4-34
HR700 SERIES
70 WATT
DC/DC C
ONVERTERS
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 MIL-
STD-704E emergency power conditions, is possible with derated output
power. See Figures 10 and 11.
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
19 to 40 VDC continuous (see Derating)
Case Operating Temperature (Tc)
–40°C to +85°C full power
ABSOLUTE MAXIMUM RATINGS
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
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
SINGLE OUTPUTS
PARAMETER
OUTPUT
VOLTAGE
HR701-2805
MIN
TYP
HR701-2812
MIN
TYP MAX
HR701-2815
MIN.
TYP
CONDITION
MAX
MAX
UNITS
FULL LOAD
4.90
5.00
5.10
11.75 12.00 12.25
14.75 15.00 15.25
VDC
OUTPUT
CURRENT
OUTPUT
POWER
V
IN
= 19 TO 40
—
—
12.00
—
—
5.83
—
—
4.67
A
Tc = –55°C TO +85°C
—
—
60
—
—
70
—
—
70
W
OUTPUT
RIPPLE
FULL LOAD BW
≤
2 MHz
—
30
100
—
30
100
—
30
100
mV p-p
LINE
REGULATION
V
IN
= 19 TO 40
—
10
30
—
10
30
—
10
30
mV
LOAD
REGULATION
INPUT
VOLTAGE
INPUT
CURRENT
NO LOAD TO FULL
—
10
30
—
10
30
—
10
30
mV
19
28
40
19
28
40
19
28
40
VDC
NO LOAD
INHIBITED
—
—
75
30
100
35
—
—
70
30
100
35
—
—
70
30
100
35
mA
INPUT REFL.
RIPPLE
EFFICIENCY
FULL LOAD
BW
≤
10 MHz
—
10
50
—
10
50
—
10
50
mA p-p
77
80
—
80
83
—
80
83
—
%
STARTUP
DELAY
WITH LOW
IMPEDANCE SOURCE
—
5
10
—
8
10
—
8
10
ms
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
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