Quick Start Procedure - Analog Devices Linear Technology DC2328A Demo Manual

DEMO MANUAL DC2328A

Quick start proceDure

Demonstration circuit 2328A is easy to set up to evaluate
the performance of the LTM4651Y. 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
(12V to 34V) and GND (input return).
2. Connect the – 24V output load between V
GND (+) (Initial load: no load).
3. Connect the DVMs to the input and output. Set the
default jumper position, JP2: ON.
4. Turn on the input power supply and check for the
proper output voltages. V
–
V
IN
12V TO 34V
+
SHUNT
10m
I
IN
+
–
2
( – ) and
OUT
should be –24V ±2%.
OUT
–
V
IN
+
Figure 1. Proper Measurement Equipment Setup
+
V
OUT
Figure 2. Measuring Output Voltage Ripple
5. Once the proper output voltages are established, adjust
the loads within the operating range and observe the
output voltage regulation, ripple voltage and other
parameters.
Note: When measuring the output or input voltage
IN
ripple, do not use the long ground lead on the oscil-
loscope probe. See Figure 2 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.
–
C
OUT
GND
–
LOAD
V
OUT
+
SHUNT
10m
I
OUT
+
–
DC2328 F01
dc2328af