TYPICAL CHARACTERISTICS

SYNC AND INHIBIT

RECOMMENDED OPERATING CONDITIONS

ABSOLUTE MAXIMUM RATINGS

Input Voltage

• 16 to 50 VDC

Output Power

• 15 watts (10 watts MHV283R3S)

Lead Soldering Temperature (10 sec per lead)

• 300°C

Storage Temperature Range (Case)

• –65°C to +150°C

2

MHV SERIES

15 WATT

Output Voltage Temperature Coefficient

• 100 ppm/°C typical

Undervoltage Lockout

• 7 V input typical

Current Limit

• 130% of full load typical at 25°C

Isolation

• 100 megohm minimum at 500 V

Audio Rejection

• 30 dB typical

Conversion (Switching) Frequency

• Free run mode 300 kHz

typical 245 kHz. min, 355 kHz. max

Clock Frequency

• External sync range 500 to 700 kHz.

Inhibit Pin Voltage (unit enabled)

• 11 V typical

Input Voltage Range

• 16 to 50 VDC continuous

• Transient: see Electrical Characteristics tables

Case Operating Temperature (Tc)

• –55°C to +125°C full power

• –55°C to +130°C absolute

Derating Output Power/Current

• Linearly from 100% at 125°C to 0% at 130°C

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

Sync In (500 to 700 kHz)

• Duty cycle 40% min, 60% max

• Logic low 0.8 V max

• Logic high 4.5 V min, 10 V max

• Referenced to input common

• If not used, leave unconnected

Inhibit TTL Open Collector

• Logic low (output disabled)

Logic low voltage

≤0.8 V

Inhibit pin current

8.4 mA typical, 10 mA maximum

• Referenced to input common

• Logic high (output enabled)

Open collector

Unconnected or 11.5 to 50 V

SINGLE OUTPUT MODELS

MHV283R3S

MHV2805S

MHV2812S

MHV2815S

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

OUTPUT VOLTAGE

3.27

3.30

3.33

4.95

5.00

5.05

11.88

12.00 12.12

14.85 15.00

15.15

VDC

OUTPUT CURRENT

0

—

3.03

0

—

3.0

0

—

1.25

0

—

1.0

A

OUTPUT POWER

0

—

10

0

—

15

0

—

15

0

—

15

W

OUTPUT RIPPLE

10 kHz - 2 MHz

VOLTAGE

Tc = –55°C to +125°C

—

5

60

—

10

60

—

7

60

—

5

60

mV p-p

LINE REGULATION

—

0

20

—

0

20

—

0

20

—

0

20

mV

LOAD REGULATION

NO LOAD TO FULL

—

15

45

—

15

40

—

5

35

—

5

40

mV

INPUT VOLTAGE

CONTINUOUS

16

28

50

16

28

50

16

28

50

16

28

50

VDC

NO LOAD TO FULL

TRANSIENT 120 ms

—

—

80

—

—

80

—

—

75

—

—

60

V

INPUT CURRENT

NO LOAD

—

23

45

—

29

52

—

26

51

—

28

57

mA

FULL LOAD

—

489

518

—

687

724

—

638

678

—

638

687

mA

INHIBITED

—

8.4

10

—

8.4

10

—

8.4

10

—

8.4

10

mA

INPUT RIPPLE

10 kHz - 20 MHz

Tc = –55°C to +125°C

—

10

50

—

10

50

—

10

50

—

10

50

mA pp

EFFICIENCY

69

73

—

74

78

—

79

84

—

78

84

—

%

POWER DISSIPATION

—

—

9.5

—

—

11

—

—

11

—

—

10.5

W

RECOVERY

—

—

20

—

—

20

—

—

20

—

—

20

ms

OUTPUT CURRENT

TRIP POINT

3.97

—

—

3.93

—

—

1.64

—

—

1.31

—

—

A

STEP LOAD

50% – 100% – 50%

TRANSIENT

—

—

250

—

—

300

—

—

300

—

—

350

mV pk

RECOVERY

—

—

700

—

—

1500

—

—

900

—

—

700

µs

START-UP

DELAY

—

5

20

—

5

20

—

5

20

—

5

20

ms

OVERSHOOT

—

50

100

—

0

50

—

0

120

—

0

150

mV pk

Notes

1. Lin = 5.5 µH.

2. Load fault is a short circuit (<50 m

Ω). Recovery is into a resistive load.

3. Load step transition

≥ 10 µs. Recovery = time to settle to within 1% of Vout final value.

4. Input step transition

≥ 10 µs. Recovery = time to settle to within 1% of Vout final value.