APW7120
Operating Waveforms (Cont.)
(Refer to the typical application circuit, VBIAS=VIN=+12V supplied by an ATX Power Supply)
6. OCSET Voltage RC Delay
No Connecting a shutdown MOSFET
at OCSET Pin
Connecting a shutdown MOSFET
(2N7002) at OCSET Pin
VOCSET
VOCSET
IL
IL
OCP
OCP
1,2
1,2
CProber=8pF
C2N7002=44pF (measured)
CProber=8pF
Ch1 : VOCSET, 0.5V/Div, DC Ch2 : IL, 10A/Div, DC
Ch1 : VOCSET, 0.5V/Div, DC
Ch2 : IL, 10A/Div, DC
BW = 20 MHz
BW = 20 MHz
Time : 2mS/Div
Time : 2m S/Div
7. Short-Circuit Test
6. OCSET Voltage RC Delay (Cont.)
Connecting a shutdown MOSFET
(APM2322) at OCSET Pin
Shorted by a wire
IL
OCP
OCP
OCP
OCP
VOUT
1
UVP
VOCSET
IL
OCP
1,2
2
CProber=8pF
CAPM2322=89pF (measured)
Ch1 : VOCSET, 0.5V/Div, DC Ch2 : IL, 10A/Div, DC
Ch1 : VOUT, 1V/Div, DC
Time : 5mS/Div
Ch2 : IL, 10A/Div, DC
BW = 20 MHz
BW = 20 MHz
Time : 2mS/Div
Copyright ã ANPEC Electronics Corp.
11
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Rev. A.4 - Jan., 2006
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
