2

dc2348aabf

DEMO MANUAL

DC2348A-A/DC2348A-B

Quick start proceDure

performance summary

DemonstrationcircuitDC2348Ahasvoltageregulation(CV)

and current regulation (CC) modes that can be evaluated.

RefertoFigure1forpropermeasurementequipmentsetup

and follow the procedure below:

NOTE: When measuring the input or output voltage

ripple, care must be taken to avoid a long ground lead

on the oscilloscope probe. Measure the input or output

voltage ripple by touching the probe tip directly across

the VHIGH or VLOW and GND terminals or directly

across relevant capacitor. See Figure 2 for proper scope

probe technique.

1. Place jumpers in the following positions:

JP1

ILIM

OPEN

JP2

PHASE1

OPEN

JP3

MODE

FCM

JP4

RUN

OFF

JP6

PHASE2

GND

S1

BUCK/BOOST

BUCK

2. With the power off, connect the input power supply

to VHIGH and GND. Connect the load to VLOW and

GND. The load current should be less than 60A for

DC2348A-A and less than 30A for DC2348A-B.

3. Connect the SETCUR turret according to the BUCK/

BOOST setting:

Buck:

SETCUR = V5 (JP1 pin 2)

Boost:

SETCUR = GND

4. Turn on the power at the input.

NOTE: Make sure that the input voltage is between

30V and 75V.

5. Change the JP4 to ON position.

to 12.2V).

NOTE: If there is no output, temporarily disconnect

the load to make sure that the load is not set too high.

7. Once the proper output voltage is established, adjust

the loads within the operating range and observe the

output voltage regulation, ripple voltage, efficiency

and other parameters.

DC2348-B (2-Phase)

Buck Mode

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Range

30

75

V

Output Voltage

11.8

12

12.2

V

Output Current

30

A

Operating Frequency

110

kHz

Efficiency

48V to 12V at 30A

97

%

Boost Mode

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Range

10

13

V

Output Voltage

47

48

49

V

Output Current

7.5

A

Operating Frequency

110

kHz

Efficiency

12V to 48V at 7.5A

97

%