TYPICAL CHARACTERISTICS

SYNC IN AND INHIBIT (INH1, INH2)

RECOMMENDED OPERATING CONDITIONS

ABSOLUTE MAXIMUM RATINGS

Input Voltage

• 19 to 40 VDC

Power Dissipation (Pd)

• 20 watts

Output Power

• 80 to 100 watts depending on model

Lead Soldering Temperature (10 sec per lead)

• 300°C

Storage Temperature Range (Case)

• –65°C to +150°C

B2-20

MFLHP SERIES

100 WATT

Output Voltage Temperature Coefficient

• 100 ppm/°C typical

Input to Output Capacitance

• 150 pF typical

Isolation

• 100 megohm minimum at 500 V

Audio Rejection

• 50 dB typical

Conversion Frequency

• Free run mode 600 kHz typical

550 kHz min, 650 kHz. max

• External sync range 525 to 675 kHz

Inhibit Pin Voltage (unit enabled)

• INH1 = 9 to12 V, INH2 = 6 to 9 V

Input Voltage Range

• 19 to 40 VDC continuous

• 80 V for 50 msec transient

Case Operating Temperature (Tc)

• –55 to +100°C full power

• –55 to +135°C absolute

Derating Output Power/Current

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

Electrical Characteristics: –50°C to +100°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.

Sync In (525 to 675 kHz)

• Duty cycle 40% min, 60% max

• Logic low 0.8 V max

• Logic high 4.5 V min

• Referenced to input common

• If not used, connect to input common

Sync Out - Referenced to input common

Inhibit (INH1, INH2) TTL Open Collector

• Logic low (output disabled)

Current –10 to –5 mA

INH1 referenced to input common

Logic low 0.8 V max

INH2 referenced to output common

Logic low 0.5 V max

• Logic high (output enabled)

Open collector

Notes

1. Unit will shut down above approximately 45V but will be undamaged and

will restart when voltage drops into normal range.

2. Indefinite short circuit protection not guaranteed above 100°C case.

3. Recovery time is measured from application of the transient to point at

which Vout is within 1% of final value.

4. Transition time

≥ 10 µs.

SINGLE OUTPUT MODELS

MFLHP2805S

MFLHP2812S

MFLHP2815S

PARAMETER

CONDITION

MIN

TYP MAX

MIN

TYP MAX

MIN

TYP MAX

UNITS

OUTPUT VOLTAGE

25°C

4.95

5.00

5.05

11.88 12.00 12.12

14.85 15.00 15.15

VDC

OUTPUT CURRENT

0

—

16

0

—

7.5

0

—

6.67

A

OUTPUT POWER

0

—

80

0

—

90

0

—

100

W

OUTPUT RIPPLE

Tc = 25°C

—

15

35

—

30

75

—

30

85

VOLTAGE 10 k - 2 MHz

Tc = –55°C to +100°C

—

30

75

—

45

125

—

45

150

mV p-p

LINE REGULATION

—

0

20

—

0

20

—

0

20

mV

LOAD REGULATION

NO LOAD TO FULL

—

0

20

—

0

20

—

0

20

mV

INPUT VOLTAGE

CONTINUOUS

19

28

40

19

28

40

19

28

40

VDC

NO LOAD TO FULL

—

—

80

—

—

80

—

—

80

V

INPUT CURRENT

NO LOAD

—

70

120

—

50

80

—

50

80

mA

FULL LOAD

—

3.6

3.73

—

3.8

3.95

—

4.2

4.40

A

INHIBITED - INH1

—

9

14

—

9

14

—

9

14

mA

INHIBITED - INH2

—

35

70

—

35

70

—

35

70

INPUT RIPPLE

CURRENT

10 kHz - 10 MHz

—

15

50

—

15

50

—

15

50

mA pp

EFFICIENCY

Tc = 25°C

77

80

—

83

86

—

84

87

—

%

POWER DISSIPATION

Tc = 25°C

SHORT CIRCUIT

—

15

20

—

15

20

—

15

20

W

RECOVERY

—

1.5

4

—

1.5

4

—

1.5

4

ms

STEP LOAD RESP.

50% – 100% – 50%

TRANSIENT

—

350

450

—

450

700

—

450

700

mV pk

—

1.5

3.0

—

1.5

3.0

—

1.5

3.0

ms

STEP LINE RESP.

19 – 40 – 19 VDC

—

250

400

—

250

400

—

250

400

mV pk

—

200

300

—

200

300

—

200

300

µs

START-UP

DELAY

—

3.5

6

—

3.5

6

—

3.5

6

ms

OVERSHOOT

—

0

25

—

0

50

—

0

50

mV pk

PINS NOT USED

TR1, Master, and Slave

If not used, leave unconnected