Quick Start Procedure - Linear Technology DC1729A Demo Manual

DEMO MANUAL DC1729A

QUICK START PROCEDURE

Demonstration circuit 1729A is easy to set up to evalu-
ate the performance of the LT3086. 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
ripple by touching the probe tip directly across the ter-
minals of the input or output capacitors. See Figure 2 for
proper scope probe technique.
1. Use JP1 to set the desired output voltage.
2. With power off, connect the input power supply to VIN
and GND.
2
3. Turn on the power at the VIN.
Note: Make sure that the VIN voltage does not exceed 40V.
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 or
is shorted.
5. Once the proper output voltages are established, adjust
the loads within the operating range and observe
the output voltage regulation, efficiency and other
parameters.
Note: Make sure that the power dissipation is limited
below the thermal limit.
Figure 1. DC1729A Proper Equipment Setup
V OR V GND
IN OUT
Figure 2. Measuring Input or Output Ripple
dc1729af