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dc1807af

DEMO MANUAL DC1807A

QUICK START PROCEDURE

Figure 1. Proper Measurement Equipment Setup

Demonstration circuit 1807A is easy to set up to evaluate

the performance of the LTC3869EUFD. Refer to Figure 1

for proper measurement equipment setup 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

probe technique.

1. Make sure jumpers are in the following positions:

JUMPER

POSITION

JP1

ON

JP2

ON

JP3

CCM

and GND. Connect active loads to outputs.

3. Turn on the power at the input.

NOTE. Make sure that the input voltage does not exceed

28V.

4. Check for the proper output voltages.

NOTE. If there is no output, temporarily disconnect the

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

5. Once the proper output voltages are established, adjust

the loads within the operating range and observe the

output voltage regulation, ripple voltage, efficiency and

other parameters.

6. Different operating modes can be evaluated by chang-

ing position of jumper JP3.

A

V

POWER

SUPPLY

V

OUT1

Load

A

V

V

OUT2

Load

A

V