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Version: 4-Oct-02

DC-DC Converter UNIT

SIMPLIFIED SCHEMATIC

TYPICAL

APPLICATIONS

-Vin

+Vout

+Vin

OSCILLATOR

DRIVER

-Vout

REGULATOR

LOAD

INPUT

+Vin

OUTPUT

-Vout

+Vout

-Vin

DC-DC

CONVERTER

TYPICAL PERFORMANCE CUREVES

EFFICIENCY VS LOAD

DERATING CURVE

0.0

20.0

40.0

60.0

80.0

0

2040

6080

100

% OF RATED LOAD(%)

0.0

0.4

0.8

1.2

1.6

2.0

-25

0

25

50

70

100

TA(degree C)

HR SERIES APPLICATION NOTES:

EXTERNAL CAPACITANCE REQUIREMENTS:

No external capacitance is required for operation of the HR series.

To meet the reflected ripple requirements of the converter, an input impedance of less than 0.5 ohm

from DC to 100KHz is required.

External output capacitance is not required for operation, however it is recommended that 10uF

tantalum and 0.1uF ceramic capacitance be selected for reduced system noise.

Additional output capacitance may be added for increased filtering, but should not exceed 220uF.

SAFE

OPERATING

AREA