TYPICAL CHARACTERISTICS

SYNC AND INHIBIT (INH1, INH2)

RECOMMENDED OPERATING CONDITIONS

ABSOLUTE MAXIMUM RATINGS

Input Voltage

• 16 to 40 VDC

Power Dissipation (Pd)

• 14 watts (16 watts MFL2805S, MFL2805D)

Output Power

• 50 to 65 watts depending on model

Lead Soldering Temperature (10 sec per lead)

• 300°C

Storage Temperature Range (Case)

• –65°C to +150°C

2

MFL SERIES

65 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

• 16 to 40 VDC continuous

• 50 V for 120 msec transient

Case Operating Temperature (Tc)

• –55°C to +125°C full power

• –55°C to +135°C absolute

Derate Output Power/Current

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

Sync In (525 to 675 kHz)

• Duty cycle 40% min, 60% max

• Logic low 0.8 V max

• Logic high 4.5 V min, 9 V max

• 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)

INH1 referenced to input common

Logic low 0.8 V max

Inhibit pin current 10 mA max

INH2 referenced to output common

Logic low 0.5 V max

Inhibit pin current 5 mA max

• Logic high (output enabled)

Open collector

Notes

1. MFL2828S specifiications are at 25°Tc, contact your Interpoint repre-

sentative for more information.

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

will restart when voltage drops into normal range.

3. Indefinite short circuit protection not guaranteed above 125°C case.

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

which Vout is within 1% of final value.

5. Transition time

≥ 10 µs.

SINGLE OUTPUT MODELS

MFL2805S

MFL2812S

MFL2815S

PARAMETER

CONDITION

MIN

TYP MAX

MIN

TYP MAX

MIN

TYP MAX

MIN

UNITS

OUTPUT VOLTAGE

Tc = 25°C

4.95

5.00

5.05

11.88 12.00 12.12

14.85 15.00 15.15

27.72 28.00 28.28

VDC

OUTPUT CURRENT

0

—

10

0

—

5

0

—

4.33

0

—

2.32

A

OUTPUT POWER

0

—

50

0

—

60

0

—

65

0

—

65

W

OUTPUT RIPPLE

Tc = 25°C

—

15

35

—

30

75

—

30

85

—

100

200

VOLTAGE 10 k - 2 MHz

Tc = –55°C to +125°C

—

30

50

—

45

100

—

45

110

—

—

—

mV p-p

LINE REGULATION

—

0

20

—

0

20

—

0

20

—

20

60

mV

LOAD REGULATION

NO LOAD TO FULL

—

0

20

—

0

20

—

0

20

—

20

75

mV

INPUT VOLTAGE

CONTINUOUS

16

28

40

16

28

40

16

28

40

16

28

40

VDC

NO LOAD TO FULL

—

—

50

—

—

50

—

—

50

—

—

50

V

INPUT CURRENT

NO LOAD

—

70

120

—

50

80

—

50

80

—

60

100

mA

FULL LOAD

—

—

2.5

—

—

2.8

—

—

3.0

—

—

2.8

A

INHIBITED - INH1

—

9

14

—

9

14

—

9

14

—

9

14

mA

INHIBITED - INH2

—

35

70

—

35

70

—

35

70

—

35

70

INPUT RIPPLE

CURRENT

10 kHz - 10 MHz

—

15

50

—

15

50

—

15

50

—

20

50

mA pp

EFFICIENCY

Tc = 25°C

77

80

—

83

86

—

84

87

—

83

86

—

%

POWER DISSIPATION

SHORT CIRCUIT

Tc = 25°C

—

12.5

16

—

10

14

—

10

14

—

7

14

A

RECOVERY

—

1.5

4

—

1.5

4

—

1.5

4

—

1.0

4

ms

STEP LOAD RESP.

50% – 100% – 50%

TRANSIENT

—

250

350

—

450

600

—

500

600

—

800

1400

mV pk

—

1.5

3.0

—

1.5

3.0

—

1.5

3.0

—

1.5

3.0

ms

STEP LINE RESP.

16 – 40 – 16 VDC

—

250

300

—

250

400

—

250

400

—

250

800

mV pk

—

200

300

—

200

300

—

200

300

—

200

400

µs

START-UP

DELAY

—

3.5

6

—

3.5

6

—

3.5

6

—

3.5

6

ms

OVERSHOOT

—

0

25

—

0

50

—

0

50

—

0

100

mV pk

PINS NOT USED

TR1, Master, and Slave

If not used, leave unconnected