HR701-285 データシートの表示（PDF） - Unspecified
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HR701-285 Datasheet PDF : 9 Pages
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HR700 SERIES
70 WATT
DC/DC CONVERTERS
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
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 19 to 40 VDC continuous (see Derating)
Case Operating Temperature (Tc)
• –40°C to +85°C full power
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
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
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.
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUTS
PARAMETER
CONDITION
OUTPUT
VOLTAGE
FULL LOAD
OUTPUT
CURRENT
VIN = 19 TO 40
OUTPUT
POWER
Tc = –55°C TO +85°C
OUTPUT
RIPPLE
FULL LOAD BW ≤ 2 MHz
LINE
REGULATION
VIN = 19 TO 40
LOAD
REGULATION
INPUT
VOLTAGE
INPUT
CURRENT
NO LOAD TO FULL
NO LOAD
INHIBITED
INPUT REFL.
RIPPLE
EFFICIENCY
FULL LOAD
BW ≤10 MHz
STARTUP
DELAY
WITH LOW
IMPEDANCE SOURCE
HR701-2805
MIN TYP MAX
4.90 5.00 5.10
— — 12.00
— — 60
— 30 100
— 10 30
— 10 30
19 28 40
— 75 100
— 30 35
— 10 50
77 80 —
—5
10
HR701-2812
MIN TYP MAX
11.75 12.00 12.25
— — 5.83
— — 70
— 30 100
— 10 30
— 10 30
19 28 40
— 70 100
— 30 35
— 10 50
80 83 —
— 8 10
HR701-2815
MIN. TYP MAX
14.75 15.00 15.25
— — 4.67
— — 70
— 30 100
— 10 30
— 10 30
19 28 40
— 70 100
— 30 35
— 10 50
80 83 —
— 8 10
UNITS
VDC
A
W
mV p-p
mV
mV
VDC
mA
mA p-p
%
ms
B4-34
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