8/1/2011 - 1 - www.onsemi.com
Test Procedure for the NCP3170BGEVB Evaluation Board
V
COM
1000V 750V MAX
10A
100 mA
FLUKE 45Dual Display Multimeter
V A OHM
V A FREQ AUTO
REL
HOLD dB
MIN 2ND
RATE
POWER
1 A
V
COM
1000V 750V MAX
10A
100 mA
FLUKE 45Dual Display Multimeter
V A OHM
V A FREQ AUTO
REL
HOLD dB
MIN 2ND
RATE
POWER
2.5 V
Agilent E3646A Dual Output DC Power Supply
0-8V,3A/0-20V, 1.5A
12 V 0.2A
1 2
Track
LOW High OV DL
RCL Store View I/O
< VoL >
OUT
LOAD
MODE SET RANGESLEW OPP RCLENTER
SHIFT C B A LEVEL FREQ SW ON
LOCAL
KIKUSUI ELECTRONIC LOAD PLZ164WA
165W 0-150V 0-33A
2.5 V 1.2 A
POWER
The following steps describe the test procedure for all these boards:
Suggested Equipment:
Current limited DC Power Supply (e.g. AGILENT 6645A) ……… 1pc DC Volt-Meter able to measure up to 60 V DC (e.g. KEITHLEY 2000) ……… 2pcs DC Amp-Meter able to measure up to 2 A DC (e.g. KEITHLEY 2000) ………. 1pc DC Amp-Meter able to measure up to 5 A DC (e.g. FLUKE 89 IV)……… 1pc DC Electronic Load (e.g. AGILENT 6060B) ……… 1pc
Test Procedure:
1. Connect the test setup as shown in Figure 1 2. Apply an input voltage, VIN = 5.0-18 Vdc 3. Apply IOUT(load) = 0 A
4. Ensure the EN SIP Header is not shorted 5. Check that VOUT = 0V Vdc
6. Short EN SIP Header with provided jumper
7. Observe Soft and PG signal proper behavior as shown in Figure 2 8. Check that VOUT = 3.3 + 5% Vdc
9. Set IOUT to desired level, 0A - 3A, and measure voltage and current - the efficiency should be similar to that shown in Figure 3 and 4
10. Check that VOUT = 3.3 + 5%Vdc under desired operating condition 11. Turn off the load
12. Turn off VIN
13. End of the test
8/1/2011 - 2 - www.onsemi.com Figure 2: NCP3170B Startup and Regulation with PG Indication
Figure 3: NCP3170 Efficiency at 5V Input and 1.2V, 1.8V, and 3.3V Output
8/1/2011 - 3 - www.onsemi.com Figure 4: NCP3170 Efficiency at 12V Input and 1.2V, 1.8V, and 3.3V Output
