recommended operating conditions

inhibit

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

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

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

derating output power/current

• Linearly from 100% at 85°C to 0% at 115°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

Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.

Notes

1.Indefinite short circuit protection not guaranteed above 85°C case temperature.

DUAL OUTPUT mODeLs

HR122-2812

HR122-2815

units

paRaMeteR

ConDitions

Min

typ

MaX Min typ MaX

output Voltage

11.88 12.0 12.12

11.82 12.0 12.18

14.85 15.0 15.15

14.77 15.0 15.23

VDC

output CuRRent1, 2

—

0.5

1.0 —

0.4

0.8

A

output poWeR2

—

—

10.8

—

—

10.8

—

—

12

—

—

10.8

—

—

10.8

—

—

12

W

total

output Ripple

—

30

60 —

30

60

mV p-p

line Regulation

—

5

50

—

30

150

—

5

50

—

30

150

mV

loaD Regulation

no loaD to Full

—

5

50

—

30

150

—

5

50

—

30

150

mV

CRoss Regulation

—

5

10

—

4

5

—

4

8

—

3

5

%

input Voltage

Continuous

16

28

32

—

—

50

16

28

32

—

—

50

VDC

tRansient

50 ms

input CuRRent

no loaD

—

25

35

—

—

545

—

1.9

3

—

25

35

—

—

540

—

1.9

3

mA

Full loaD

inhibiteD

input Ripple CuRRent

—

175

240 —

175

240

ma p-p

eFFiCienCy

78

81

— 80

83

—

%

loaD Fault5

poWeR Dissipation

oVeRloaD

—

—

2.8

—

—

5

—

—

2

—

—

5

W

shoRt CiRCuit

staRt

Delay

—

150

250 —

150

250

ms

HR120

SERIES

12 WATT

www.interpoint.com

Page 2 of 6

HR120 Rev C - 20090904