17

CHARACTERISTIC

DA T A

40

50

60

70

80

90

100

0

0.5

1

1.5

2

9.0V

10.0V

15.0V

Vin

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

9

121518

21242730

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

9

1215

182124

2730

Note 1:

All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.

Note 2:

Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Notes.)

Efficiency vs Output Current

Ripple vs Output Current

(See Note 2)

Power Dissipation vs Output Current

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Vin-(Volts)

0

0.5

1

1.5

2

2.5

0

0.5

1

1.5

2

28.0V

24.0V

18.0V

15.0V

12.0V

9.0V

Vin

40

50

60

70

80

90

100

00.5

11.5

2

9.0V

12.0V

15.0V

18.0V

24.0V

28.0V

Vin

0

20

40

60

80

100

120

00.5

11.5

2

28.0V

24.0V

18.0V

15.0V

12.0V

9.0V

Vin

PT78HT200 Series

Efficiency vs Output Current

Ripple vs Output Current

(See Note 2)

Power Dissipation vs Output Current

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Vin-(Volts)

50°C

60°C

70°C

85°C

0

20

40

60

80

100

120

00.5

11.5

2

26.0V

20.0V

15.0V

10.0V

9.0V

Vin

50°C

60°C

70°C

85°C

0

0.5

1

1.5

2

2.5

00.5

11.5

2

26.0V

20.0V

15.0V

10.0V

9.0V

Vi n