APW7098
Operating Waveforms (Cont.)
External Step-Up Reference by VREFIN/EN
External Step-Down Reference by VREFIN/EN
VREFIN/EN
VREFIN/EN
1
1
2
VFB
VSS
VFB
VSS
IOUT
2
3
IOUT
3
4
4
CH1: VREFIN/EN (1V/div)
CH2: VFB (500mV/div)
CH3: VSS (1V/div)
CH4: IOUT (10A/div)
Time: 200ms/div
CH1: VREFIN/EN (1V/div)
CH2: VFB (500mV/div)
CH3: VSS (1V/div)
CH4: IOUT (10A/div)
Time: 200ms/div
Power On Without VIN2 Voltage
Under-Voltage Protection (UVP)
VOUT
VFB
1
2
3
4
1
VPHASE1
VPHASE1
2
VPHASE2
VPHASE2
3
Vss
Vss
4
CH1: VOUT (1V/div)
CH2: VPHASE1 (10V/div)
CH3: VPHASE2 (2V/div)
CH4: VSS (2V/div)
Time: 5ms/div
CH1: VFB (500mV/div)
CH2: VPHASE1 (10V/div)
CH3: VPHASE2 (10V/div)
CH4: VSS (2V/div)
Time: 200ms/div
Copyright ã ANPEC Electronics Corp.
9
www.anpec.com.tw
Rev. A.6 - Oct., 2009
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
