APW7108
Operating Waveforms (Cont.)
Current-Limit and UV Protections (CH2)
Current-Limit and UV Protections (CH1)
IOUT2 rises with
slow slew rate
IOUT1 rises with
slow slew rate
1
2
1
2
3
3
4
4
CH1: VPHASE1 (20V/div)
CH1: VPHASE2 (20V/div)
CH2: VOUT1 (2V/div)
CH3: IL2 (10A/div)
CH4: VOUT2 (2V/div)
Time: 1ms/div
CH2: VOUT1 (2V/div)
CH3: IL1 (10A/div)
CH4: VOUT2 (2V/div)
Time: 2ms/div
Short Circuit Test
Operating at Light Load of 100mA (CH1)
In PFM Operation
1
2
1
2
3
4
3
4
CH1: VOUT1 (AC, 100mV/div)
CH2: VPHASE1 (20V/div)
CH3: IL1 (2A/div)
CH1: VPHASE1 (20V/div)
CH2: VOUT1 (2V/div)
CH3: IL1 (5A/div)
CH4: VOUT2 (AC, 100mV/div)
Time: 10ms/div
CH4: VOUT2 (2V/div)
Time: 10ms/div
Copyright ã ANPEC Electronics Corp.
11
www.anpec.com.tw
Rev. A.4 - Jan., 2009
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
