NCP6324GEVB
http://onsemi.com
6
Test Procedure of Evaluation Board
1. Prepare equipments as below list.
a. DC power supply
b. Electronic load
c. Multimeters
d. Oscilloscope
2. Check jumper setup to make sure it is a right default
configuration for the device under test.
3. Set the power supply to 3.6 V with a current limit
higher than 1 A, and then disable the output of the
power supply.
4. Connect the power supply to the evaluation board’s
connectors Vin+ and Vin
−
.
5. Disable output of the electronic load and connect it
to the evaluation board’s connectors Vo+ and Vo
−
.
6. Enable the output of the power supply and check the
1.8 V output voltage of the evaluation board.
7. Set the electronic load to 10 mA and enable its
output. Typical input supply current is about 6 mA.
8. Monitor the output voltage and SW node signal
using an oscilloscope. The converter should operate
in DCM with similar waveforms as shown in
Figure 5(a).
9. Increase the electronic load to 1.0 A. Typical input
supply current is about 565 mA.
10. Monitor the output voltage and SW node signal
using the oscilloscope. The converter should operate
in CCM with similar waveforms as shown in
Figure 5(b). The switching frequency is about
3 MHz.
11. After the test is done, make sure to disable the output
of power supply before remove power connectors to
protect the device from damage caused by possible
high voltage spike in input.
(a) Io = 10 mA
(b) Io = 1000 mA
Figure 5. Typical Operation Waveforms of NCP6324B/C Evaluation Board