Quick Start Procedure - Linear Technology DC1731A-A Demo Manual

DEMO MANUAL
DC1731A-A/DC1731A-B

QUICK START PROCEDURE

Demonstration circuit 1731A is an easy way to evaluate
the performance of the LTC3646/LTC3646-1. Please refer
to Figure 1 for proper measurement equipment setup and
follow the procedure below:
1. Place jumpers in the following positions for a typical
application:
MODE
FCC
2. With power off, connect the input power supply, load
and meters as shown in Figure 1. Preset the load to 0A
and V supply to be 0V.
IN
2
Arrow.com. Arrow.com.
Downloaded from Downloaded from
EXTVCC RUN
GND ON
Figure 1. Proper Measurement Equipment Setup
3. Turn on the power at the input. Increase V
not hot-plug the input supply or apply more than the
rated maximum voltage of 40V to the board or the
part may be damaged). The output voltage should be
regulated and deliver the selected output voltage ±2%.
4. Vary the input voltage from 4V to 40V and adjust the
load current from 0A to 1A. Observe the output voltage
V SELECT
OUT
regulation, ripple voltage, efficiency, and other param-
3.3V
eters.
5. To measure input or output ripple, please refer to Figure 2
for proper measurement setup.
+
– +
LOAD
– +
to 12V (Do
IN
+
+
+
V
IN
–
–
dc1731aabf