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参数资料
| 型号： | APW6020K-TR |
| 厂商： | Anpec Electronics Corporation |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Advanced Dual PWM and Dual Linear Power Controllers |
| 中文描述： | 先进的双PWM和双线性功率控制器 |
| 文件页数： | 6/13页 |
| 文件大小： | 128K |
| 代理商： | APW6020K-TR |
Copyright
ANPEC Electronics Corp.
Rev. A.2 - May, 2001
APW 6020
www.anpec.com.tw
6
power-on reset (POR) purposes.
GND (Pin 17)
Signal ground for the IC. All voltage levels are mea-
sured with respect to this pin.
DRIVE3 (Pin 18)
Connect this pin to the gate of an external MOSFET.
This pin provides the drive for the 1.5V regulator’s
pass transistor.
VSEN3 (Pin 19)
Connect this pin to the output of the 1.5V linear
regulator. This pin is monitored for under-voltage
events.
COMP1 and FB1 (Pins 20 , and 21)
COMP1 and FB1 are the available external pins of
the synchronous PWM regulator error amplifier. The
FB1 pin is the inverting input of the error amplifier.
Similarly , the COMP1 pin is the error amplifier output.
These pins are used to compensate the voltage-mode
control feedback loop of the synchronous PWM
converter.
VSEN1 (Pin 22)
This pin is connected to the synchronous PWM
converters’s output voltage. The PGOOD and OVP
comparator circuits use this signal to report output
voltage status and for over-voltage protection.
OCSET1 (Pin 23)
Connect a resistor (R
) from this pin to the drain
of the synchronous PWM converter’s upper MOSFET.
R
, an internal 200
μ
A current source (I
) ,
and the MOSFET’s on-resistance(r
) set the con-
verter over-current (OC) trip point according to the
following equation :
I
PEAK
=
An over-current trip cycles the soft-start function. The
voltage at OCSET1 pin is monitored for power-on
reset (POR) purposes.
PGND (Pin 24)
This is the power ground connection. Tie the syn-
chronous PWM converter’s lower MOSFET source
to this pin.
LGATE1 (Pin 25)
Connect LGATE1 to the synchronous PWM
converter’s lower MOSFET gate. This pin provides
the gate drive for the lower MOSFET.
PHASE1 (Pin 26)
Connect the PHASE1 pin to the synchronous PWM
converter’s upper MOSFET source. This pin is used
to monitor the voltage drop across the upper MOSFET
for over-current protection.
UGATE1 (Pin 27)
Connect UGATE1 pin to the synchronous PWM
converter’s upper MOSFET gate. This pin provides
the gate drive for the upper MOSFET.
VCC (Pin 28)
Provide a 12V bias supply for the IC to this pin. This
pin also provides the gate bias charge for all the
MOSFETs controlled by the IC. The voltage at this
pin is monitored for Power-On Reset (POR) purposes.
Functional Pin Description Cont.
I
OCSET
* R
OCSET
r
DS(ON)
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