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参数资料
| 型号： | APW7004KC-TU |
| 厂商： | Anpec Electronics Corporation |
| 英文描述： | Synchronous-Rectifier PWM Controller for Pentium II Microprocessor |
| 中文描述： | 同步整流PWM控制器，微处理器的奔腾II |
| 文件页数： | 4/10页 |
| 文件大小： | 100K |
| 代理商： | APW7004KC-TU |
Copyright
ANPEC Electronics Corp.
Rev. P.4 - Mar., 2001
APW 7004
www.anpec.com.tw
4
APW7004
Typ.
Symbol
Parameter
Test Conditions
Min.
Max.
Unit
Gate Drivers
R
UG, SOURCE
Upper Gate Source
R
UG, SINK
Upper Gate Sink
R
LG, SOURCE
Lower Gate Source
R
LG, SINK
Lower Gate Sink
Protection
Over-Voltage Trip (V
SEN
/DACOUT)
I
OCSET
OCSET Current Source
I
OVP
OVP Souring Current
I
SS
Soft Start Current
Power Good
Upper Threshold (V
SEN
/DACOUT)
Lower Threshold (V
SEN
/DACOUT)
V
BOOT-
V
PHASE
=12V
V
BOOT-
V
PHASE
=12V
V
CC
=12V
V
CC
=12V
8.3
5
8.3
5
115
200
30
10
120
230
%
μ
A
mA
μ
A
V
OCSET
=4.5V
DC
V
SEN
=5.5V ,V
OVP
=0V
170
V
SEN
Rising
V
SEN
Rising
Upper and Lower
Threshold
I
PGOOD
= -5mA
110
90
%
%
Hysteresis (V
SEN
/DACOUT)
2
%
V
PGOOD
PGOOD Voltage Low
0.5
V
Electrical Characteristics
CONT.
VSEN (pin 1)
Connect this pin to the converter’s voltage output.
The PGOOD and OVP comparator circuits monitor
output voltage status and act over voltage protection
by using this signal.
OCSET(pin 2)
Connect a resistor(R
) from this pin to the drain
of the upper MOSFET. An internal 200mA current
source (I
), R
OCSET
, and the upper MOSFET’s on-
resistance (R
) set the converter over-current
(OC) trip point according to the following equation:
I
= I
′ R
/R
An over-current trip resets the soft-start function.
SS (Pin 3)
Connect a capacitor from this pin to ground. This
capacitor, along with an internal 10mA current source,
Pin Function Description
sets the soft-start interval of the converter.
VID0-4 (Pins 4-8)
VID0-4 are the input pins to the 5-bit DAC. The states
of these five pins decide the internal voltage refer-
ence (DACOUT). The level of DACOUT sets the con-
verter output voltage and also sets the PGOOD and
OVP thresholds. Table 1 specifies DACOUT for the
32 combinations of DAC inputs.
COMP (pin 9) and FB (pin 10)
COMP and FB are the accessiable pins of the error
amplifier. FB pin is the inverting input of the error
amplifier and COMP pin is output of the error amplifier.
These pins provide the compensation for the volt-
age-control feedback loop of the converter.
GND (Pin 11)
GND is signal ground of the IC. All voltage levels are
measured with respect to this pin.
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