APW7158 Ver la hoja de datos (PDF) - Anpec Electronics
Número de pieza
componentes Descripción
Fabricante
APW7158 Datasheet PDF : 24 Pages
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APW7158
Pin Description
PIN
NO.
NAME
FUNCTION
1
FB1
These pins are the inverting inputs of the error amplifiers of their respective regulators. They are used to
set the output voltage and the compensation components.
2
COMP1
These pins are the outputs of error amplifiers of their respective regulators. They are used to set the
compensation components.
3
COMP2
These pins are the outputs of error amplifiers of their respective regulators. They are used to set the
compensation components.
4
FB2
These pins are the inverting inputs of the error amplifiers of their respective regulators. They are used to
set the output voltage and the compensation components.
5
REFIN
This pin is the reference input voltage of error amplifier of OUT2. It also provides the voltage into a buffer,
which is out on the REFOUT pin.
6
REFOUT
This pin provides a buffed voltage, which is from REFIN pin. A 0.1µF capacitor to ground is recommended
for stability.
7
SS1/EN1 These pins provide two functions. Connect a capacitor to the GND for setting the soft-start time. Use an
open drain logic signal to pull the SS/EN pin low to disable the respective output, leave it open to enable
8
SS2/EN2 the respective output.
9
VREF
This pin provides a 3.3V reference voltage, which can be used by the REFIN pin or other ICs as a voltage
reference. A 1µF capacitor to ground is recommended for stability.
This pin is used to adjust the switching frequency. Connecting a resistor from FS pin to GND increases the
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FS switching frequency. Conversely, connecting a resistor from this pin to VCC12 reduces the switching
frequency.
11
GND This pin is the signal ground pin for the IC.
12
UGATE2 These pins provide the gate driver for the upper MOSFETs of OUT1 and OUT2 respectively.
13
BOOT2
These pins provide the bootstrap voltage to the gate driver for driving the upper MOSFETs. A boostrap
circuit may be used to create a BOOT voltage.
14
PGND This pin is the power ground for the gate driver circuits. It should be tied to the GND.
15
LGATE2
These pins provide the gate driver for the lower MOSFETs of OUT1 and OUT2.
16
LGATE1
17
VCC12
Power Supply Input Pin. Connect a nominal 12V power supply to this pin for the gate driver circuits. A
decoupling capacitor (1 to 10µF) to GND is recommended for noise decoupling.
18
UGATE1 These pins provide the gate driver for the upper MOSFETs of OUT1 and OUT2 respectively.
19
BOOT1
These pins provide the bootstrap voltage to the gate driver for driving the upper MOSFETs. A boostrap
circuit may be used to create a BOOT voltage.
Power Supply Input Pin. Connect a nominal 5V power supply to this pin for the control circuits, or connect a
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VCC resistor (nominally 300Ω) to VCC12 to function this pin as a shunt regulator (typical 5.8V). A decoupling
capacitor (1 to 10µF) to GND is recommended for noise decoupling.
Copyright © ANPEC Electronics Corp.
11
Rev. A.2 - Aug., 2009
www.anpec.com.tw
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