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dc2317af
DEMO MANUAL
DC2317A
QUICK START PROCEDURE
Figure 1. Proper Measurement Equipment Setup
Refer to Figure 1 for proper measurement equipment
setup and follow the procedure below.
Note:
When measuring the output voltage ripple, care
must be taken to avoid a long ground lead on the oscil-
loscope probe. Measure the output voltage ripple by
touching the probe tip and ground ring directly across
the last output capacitor as shown in Figure 1.
1. Place SW1 to ON position.
2. With power off, connect the input power supply to
+VIN_EMI and GND. If the EMI/EMC performance is
not important, the input EMI filter can be bypassed by
connecting the input power supply to +V
IN
and GND.
3. With power off, connect loads from +V
OUT
to GND.
4. Turn on the power at the input. Make sure that the input
voltage does not exceeds 100V.
5. Check for the proper output voltage using a voltmeter.
Output voltage should be within 5.0V ± 0.1V.
Note:
If there is no output, temporarily disconnect the
load to make sure that the load is not set too high.
6. Once the proper output voltage is established, adjust
the load within the operating ranges and observe the
output voltage regulation, ripple voltage, efficiency and
other parameters.
7. An external clock can be added to the CLKIN terminal
when SYNC mode is used (JP1 on the SYNC position).
See the data sheet Frequency Selection and Phase-
Locked Loop section for details.
+
–
+
–
LOAD
I
OUT
V
OUT
I
IN
V
IN
+
–
+
–
+
–
+
–
POWER
SUPPLY
dc2017a F01