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