APW7108
Operating Waveforms (Cont.)
UVP, PWM Mode (CH2)
UVP, PWM Mode (CH1)
1
2
1
2
3
4
3
4
CH1: VPHASE1 (20V/div)
CH2: VOUT1 (2V/div)
CH3: IL1 (5A/div)
CH1: VPHASE2 (20V/div)
CH2: VOUT2 (2V/div)
CH3: IL2 (5A/div)
CH4: VOUT1 (2V/div)
Time: 200ms/div
CH4: VOUT2 (2V/div)
Time: 100ms/div
Input Step-Down Transient at PFM Mode
Input Step-Up Transient at PFM Mode
IOUT1 = 80m A
IOUT1 = 80m A
1
1
2
2
3
3
CH1: VIN (10V/div)
CH1: VIN (10V/div)
CH2: VOUT1 (AC, 100mV/div)
CH3: VOUT2 (AC, 50mV/div)
Time: 50ms/div
CH2: VOUT1 (AC, 100mV/div)
CH3: VOUT2 (AC, 100mV/div)
Time: 50ms/div
Copyright ã ANPEC Electronics Corp.
8
www.anpec.com.tw
Rev. A.4 - Jan., 2009
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
