MAXREFDES113 datasheet(4/7 Pages) MAXIM

4 / 7 page

VSTART = (R5 + R6 + R7)/(R6 + R7) × 1.21 (V)

VOVI = (R5 + R6 + R7)/R7 × 1.21 (V)

If R5 = 280kΩ, R6 = 13kΩ, and R7 = 10kΩ, then:

VSTART = 15.94V, VOVI = 36.66V.

Quick Start

Required equipment

•

MAXREFDES113# board

•

One 24V DC power supply

•

One electronic load

•

1 voltmeter

•

1 ammeter

Procedure

The MAXREFDES113# board is fully assembled and tested. Use the following steps to verify board

operation.

1. Turn off the power supply.

2. Connect the positive terminal of the power supply to the VIN pin of the MAXREFDES113# board.

3. Connect the negative terminal of the power supply to the PGND pin of the MAXREFDES113# board.

4. Connect the VOUT connector of the MAXREFDES113# board to the positive terminal of the electronic

load.

5. Connect the negative terminal of the electronic load to the positive terminal of the ammeter.

6. Connect the negative terminal of the ammeter to the GNDO connector of the MAXREFDES113# board.

7. Connect the voltmeter across the VOUT and the GNDO connectors of the MAXREFDES113# board.

8. Turn on the power supply.

9. Set the electronic load to a constant current between 0mA to 1.6A.

10. Verify the second voltmeter reading is 12V ±0.6V.

Lab Measurements

The MAXREFDES113# design was verified and tested under full input range and different output load

conditions.

The power efficiency vs. load current is illustrated in Figure 2.

MAXREFDES113 데이터시트(PDF) 4 Page - Maxim Integrated Products