APW7057K 데이터 시트보기 (PDF) - Anpec Electronics
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APW7057K Datasheet PDF : 14 Pages
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APW7057
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over VCC=5V, VBOOT=12V and TA= 0~70 oC. Typical
values are at TA=25oC.
Symbol
Parameter
Test Conditions
PWM CONTROLLER GATE DRIVERS
UGATE Source
VUAGTE=1V
UGATE Sink
VUGATE=1V
LGATE Source
VLGATE=1V
LGATE Sink
VLGATE=1V
TD Dead Time
PROTECTION
IOCSET OCSET Sink Current
VOCSET=4.5V
UVFB FB Under-Voltage Level FB falling
FB Under-Voltage
Hysteresis
SOFT-START AND SHUTDOWN
TSS Soft-Start Interval
Shutdown Threshold
VOCSET Falling
OCSET Shutdown
Hysteresis
APW7057
Unit
Min Typ Max
0.6
A
7.3
Ω
0.6
A
1.8
Ω
50
nS
34 40 46 µA
0.5
V
15
mV
2
mS
1.25
V
20
mV
Functional Pin Description
BOOT (Pin 1)
This pin provides the supply voltage to the high side
MOSFET driver. A voltage no greater than 13V can
be connected to this pin as a supply to the driver.
For driving logic level N-channel MOSEFT, a boot-
strap circuit can be use to create a suitable driver’s
supply.
UGATE (Pin 2)
This pin provides gate drive for the high-side
MOSFET.
LGATE (Pin 4)
This pin provides the gate drive signal for the low
side MOSFET.
VCC (Pin 5)
This is the main bias supply for the controller and
its low side MOSFET driver. Must be closely
decoupled to GND (Pin 3). DO NOT apply a
voltage greater than 5.5V to this pin.
GND (Pin 3)
Signal and power ground for the IC. All voltage lev-
els are measured with respect to this pin. Tie this
pin to the ground plane through the lowest imped-
ance connection available.
FB (Pin 6)
This pin is the inverting input of the error amplifier
and it receives the feedback voltage from an exter-
Copyright ANPEC Electronics Corp.
5
Rev. A.3 - Oct., 2003
www.anpec.com.tw
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