APW7120
Operating Waveforms (Cont.)
(Refer to the typical application circuit, VBIAS=VIN=+12V supplied by an ATX Power Supply)
4. Enabling and Shutting Down
Enabling by Releasing OCSET Pin
Shutting Down by Pulling OCSET Low
VOCSET
VUGATE
3
2
3
2
VOCSET
VUGATE
VOUT
VOUT
1
1
IOUT=2A
Ch1 : VOUT, 1V/Div, DC
Ch2 : VUGATE, 20V/Div, DC
Ch1 : VOUT, 1V/Div, DC
Ch2 : VUGATE, 20V/Div, DC
Ch3 : VOCSET, 2V/Div, DC Time : 2mS/Div
BW = 20 MHz
Ch3 : VOCSET, 2V/Div, DC Time : 2mS/Div
BW = 20 MHz
5. Over-Current Protection
No Connecting a shutdown MOSFET
at OCSET Pin
Connecting a shutdown MOSFET
(2N7002) at OCSET Pin
ROCSET=15k
APM2512
ROCSET=15k
APM2512
VOUT
VOUT
1
1
IL
IL
2
2
Ch1 : VOUT, 1V/Div, DC
Time : 5mS/Div
Ch2 : IL, 10A/Div, DC
BW = 20 MHz
Ch1 : VOUT, 1V/Div, DC
Time : 5mS/Div
Ch2 : IL, 10A/Div, DC
BW = 20 MHz
Copyright ã ANPEC Electronics Corp.
10
www.anpec.com.tw
Rev. A.4 - Jan., 2006
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
