Analog Devices Linear Technology DC2708A Demo Manual page 2

DEMO MANUAL
DC2708A
QUICK START PROCEDURE
Refer to Figure 1 for proper measurement equipment
setup and follow the procedure below:
NOTE: When measuring the output voltage during switch-
ing transitions, care must be taken to avoid a long ground
lead on the oscilloscope probe. Measure the output volt-
age ripple by touching the probe tip and ground ring
directly across the output capacitor as shown in Figure 2.
1. With input power supply set to zero volt and power off,
connect the input power supply to +V
2. With power off, connect load from +V
3. Set V supply to zero volt and power off, connect
CC
V supply to V
CC
+
V
IN
–
2
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and GND.
IN
OUT
and GND.
CC
I
IN
+
–
+
POWER
SUPPLY
–
Figure 1. Proper Measurement Equipment Setup
4. Turn on V
to 10V.
5. Turn on the input power supply and increase the input
voltage slowly to 9V. The input range is up to 135V
but hot-plugging with long leads may result in input
voltages in excess of 135V.
6. Connect a signal source across INPUT and GND.
Apply a signal with 2.2V or higher will turn-on the high
side switch.
to GND. 7. Check for the proper output voltage using a voltmeter.
Output voltage should be close to input voltage.
8. Once the proper output voltage is established, adjust
the load.
+
V
CC
SIGNAL
POWER
SOURCE
SUPPLY
–
supply and increase the voltage slowly
CC
I
OUT
+
–
+
LOAD
–
+
V
OUT
–
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