Rev:20130814A

Page 5 of 7

Isolated DC-DC Converters

BUC20W Series -- 20 Watt

PRELIMINARY

Test Configurations

All specifications are typical at nominal input, full load and 25°C unless otherwise stated.

◎DC Power Supply:

It offers a wide voltage and current range precisely.

◎Current meter (A): Accuracy

200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits)

2000mA ~ 20A 2 ranges+(0.3% rdg + 2 digits).

◎Voltage meter (V): Accuracy

+(0.03% rdg + 4 digits).

◎ Load: At full load.

◎ ◎Wires: The resistance of the wires must be small.

EX: Narrow input voltage range（±10%）

5V nominal input

4.5~5.5V

12V nominal input

10.8~13.2V

24V nominal input

21.6~26.4V

Wide input voltage range 2:1

5V nominal input

4.5~9V

12V nominal input

9~18V

24V nominal input

18~36V

48V nominal input

36~75V

Wide input voltage range 4:1 (W)

24V nominal input

9~36V

48V nominal input

18~75V

Pin = Vin x Iin

Vin：Input voltage

Iin：Input current

Pout = Vout x Iout

Vout：Output voltage

Iout：Output current

Pout: Output power

Pin: Input power

Vout：Output voltage

Vout(nominal)：Nominal output voltage

DC

Power Supply

A

V

Load

DC/DC

converter

V

A

DC

Power Supply

A

V

Load

DC/DC

converter

V

A

│

│

│

│Vout-Vout(nominal)│

│

│

│

Vout

x100%

Efficiency =

x100%

Pout

Pin

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