6/24/2014 - 1 - www.onsemi.com
Test Procedure for the NCP1422GEVB Evaluation Board
1. Connect the test setup as shown above.
2. TURN OFF the JP; (enable the device).
3. Set the Power Supply to 3.0V and apply to TP1, TP2, (T1, T2).
4. Apply 500mA loading form the electric load.
5. Check the input current (I
IN
), output voltage (V
OUT
) and output ripple;
For V
OUT
= 3.3V; JP2 OFF
I
IN
= 590.7mA ~ 608.7mA
V
OUT
= 3.267 ~ 3.367V
V
RIPPLE
≤ 35mV
For V
OUT
= 5V; JP2 ON
I
IN
= 931.07mA ~ 957.4mA
V
OUT
= 4.859 ~ 5.0075V
V
RIPPLE
≤ 40mV
6. Check the switching waveform at scope CH1 to see whether it is a normal
continuous conduction mode switching node waveform and switching ON time
(T
ON
) is between 0.46 µs ~ 1.15 µs
