Analog Devices DC2910A Demo Manual page 2

DEMO MANUAL DC2910A
QUICK START PROCEDURE
Demonstration circuit 2910A is easy to set up to evaluate
the performance of the LTM4691. Refer to Figure 1 for
the proper measurement equipment setup and follow the
procedure below.
1. With power off, connect the input power supply to V
(2.35V-3.6V) and GND (input return).
2. Connect the output loads between V
(Initial load: no load). Refer to Figure 1.
3. Connect the DVMs to the input and output.
4. Check the default jumper position: JP2 (RUN1): OFF;
JP3 (RUN2): OFF .
5. Turn on the input power supply and adjust voltage to
2.35V – 3.6V;
NOTE: Make sure that the input voltage does not exceed
4.0V.
6. Change the following jumpers' position: JP2: ON; JP3: ON.
2
7. Check for the proper output voltages from V
turrets.
8. Once the proper output voltage is established, adjust
the loads within the operating range and measure the
efficiency, output ripple voltage and other parameters.
IN
9. After completing all tests, adjust the load to 0A, power
and GND off the input power supply.
OUT
NOTES:
1. When measuring the output or input voltage ripple, do
not use the long ground lead on the oscilloscope probe.
See Figure 3 for the proper scope probe technique. Short,
stiff leads need to be soldered to the (+) and (−) terminals
of an output capacitor. The probe's ground ring needs to
touch the (−) lead and the probe tip needs to touch the
(+) lead.
to GND
OUT
Rev. 0