MHF2812S 参数 Datasheet PDF下载

MHF SERIES

12 WATT

ABSOLUTE MAXIMUM RATINGS

Input Voltage

• 16 to 40 VDC (19 to 40 VDC 15 volt output)

Output Power

• 12 watts (10 watts MHF2805S)

Lead Soldering Temperature (10 sec per lead)

• 300°C

Storage Temperature Range (Case)

• –55°C to +135°C

DC/DC C

ONVERTERS

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

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

RECOMMENDED OPERATING CONDITIONS

Input Voltage Range

• 16 to 40 VDC continuous

• 19 to 40 VDC 15 volt outputs continuous

• 50 V for 50 msec transient

Case Operating Temperature (Tc)

• –55°C to +125°C full power

• –55°C to +110°C full power for MHF2805S

• –55°C to +135°C absolute

• –55°C to +130°C absolute for MHF2805S

Derating Output Power/Current

• Linearly from 100% at 125°C to 0% at 135°C

• Linearly from 100% at 110°C to 0% at 130°C

for MHF2805S

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

SINGLE OUTPUT MODELS

PARAMETER

OUTPUT VOLTAGE

OUTPUT CURRENT

OUTPUT POWER

OUTPUT RIPPLE

LINE REGULATION

LOAD REGULATION

INPUT VOLTAGE

MIN. TO MAX. V

IN

10 kHz to 2 MHz

MIN. TO MAX. V

IN

NO LOAD TO FULL

CONTINUOUS

TRANSIENT 50 ms

INPUT CURRENT

NO LOAD

FULL LOAD

INHIBITED

INPUT RIPPLE

CURRENT

EFFICIENCY

LOAD FAULT

1

POWER DISSIPATION

OVERLOAD

SHORT CIRCUIT

START-UP

DELAY

—

—

—

—

–

180

5

3.5

300

—

—

—

—

—

80

5

2.8

200

—

—

—

—

—

150

5

2

250

ms

W

10 kHz TO 2 MHz

—

74

135

77

180

—

—

77

150

81

200

—

—

80

150

83

220

—

mA p-p

%

CONDITIONS

MIN

4.95

—

—

—

—

—

16

—

—

—

—

MHF2805S

TYP

5.0

—

—

40

10

10

28

—

20

—

2

MAX

5.05

2.0

10

60

50

50

40

50

30

483

3

MIN

11.88

—

—

—

—

—

16

—

—

—

—

MHF2812S

TYP

12

—

—

30

10

10

28

—

20

—

2

MAX

12.12

1.0

12

60

50

50

40

50

30

557

3

MHF2815S

MIN

14.85

—

—

—

—

—

19

—

—

—

—

TYP

15

—

—

25

10

10

28

—

20

—

2

MAX

15.15

0.8

12

50

50

50

40

50

30

535

3

mA

UNITS

VDC

A

W

mV p-p

mV

mV

VDC

V

Notes

1. Indefinite short circuit protection not guaranteed above 125°C case temperature (110°C case for MHF2805S).

B2-78