HR121-2812 Datasheet, PDF (2/6 Pages) Crane Aerospace & Electronics. – DC/DC CONVERTERS 28 VOLT INPUT

HR120 SERIES
12 WATT
DC/DC CONVERTERS
ABSOLUTE MAXIMUM RATINGS
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
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
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
TYPICAL CHARACTERISTICS
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
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER
CONDITIONS
OUTPUT VOLTAGE
OUTPUT CURRENT
OUTPUT POWER
OUTPUT RIPPLE
MIN. TO MAX. V_IN
10 kHz to 2 MHz
LINE REGULATION
LOAD REGULATION
MIN. TO MAX. V_IN
NO LOAD TO FULL
INPUT VOLTAGE
NO LOAD TO FULL
TRANSIENT 50 ms
INPUT CURRENT
NO LOAD
FULL LOAD
INHIBITED
INPUT RIPPLE
CURRENT
10 kHz TO 2 MHz
EFFICIENCY
LOAD FAULT¹
POWER DISSIPATION
OVERLOAD
SHORT CIRCUIT
START-UP
DELAY
HR121-2805
MIN TYP MAX
4.95 5.0 5.05
—
— 2.0
—
— 10
—
40
60
—
10
50
—
10
50
16
28
40
—
—
50
—
20
30
—
— 478
—
2
3
— 135 180
74 77 —
—
—
5
—
–
3.5
— 180 300
Notes
1. Indefinite short circuit protection not guaranteed above 85°C case temperature.
HR121-2812
MIN TYP MAX
11.88 12 12.12
—
— 1.0
—
— 12
—
30 60
—
10 50
—
10 50
16
28 40
—
— 50
—
20 30
—
— 548
—
2
3
— 150 200
77
81 —
—
—
5
—
— 2.8
—
80 200
HR121-2815
MIN TYP MAX
14.85 15 15.15
—
— 0.8
—
— 12
—
25 50
—
10 50
—
10 50
19
28 40
—
— 50
—
20 30
—
— 535
—
2
3
UNITS
VDC
A
W
mV p-p
mV
mV
VDC
mA
— 150 220 mA p-p
80
83 —
%
—
—5
W
—
—2
— 150 250
ms
B4-48