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APW7159A PDF 데이터시트 ( Data , Function )

부품번호 APW7159A 기능
기능 Dual Channel Synchronous Buck PWM Controller
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APW7159A 데이터시트, 핀배열, 회로
APW7159A
Dual Channel Synchronous Buck PWM Controller for SMPS
Features
General Description
Single 12V Power Supply Required
Excellent Output Voltage Regulation
- 1.0V±0.8% Internal Reference Over Line and
Temperature
Simple Single Loop Control Design
- Voltage Mode PWM Control
0~100% Duty Ratio
Programmable Frequency Range from 50kHz to
400kHz (Constant 50kHz when Floating)
Integrated Soft-Start and Soft-Off (Patent Pending)
Support Pre-Biased Power-On
Both Channel with 180o Phase Shift
Integrated Boot-Strap Diode
Over-Current Protection
- Sense High Side MOSFET’s R
DS(ON)
120% Over-Voltage Protection
50% Under-Voltage Protection
Over-Temperature Protection
Available in SOP-20 Package
Lead Free and Green Devices Available
(RoHS Compliant)
Applications
SMPS
Simplified Application Circuit
The APW7159A is a dual channel voltage mode and syn-
chronous PWM controller which drives dual N-channel
MOSFETs. The two channels are operated with 180 de-
gree phase shift.
The device integrates all of the control, monitoring, and
protecting functions into a single package; provides two
controlled power output with over-voltage, over-
temperature, and over-current protections.
The APW7159A provides excellent regulation for output
load variation. The internal 1.0V temperature-compen-
sated reference voltage provides high accuracy of 0.8%
over line and temperature. The device includes a 50kHz
free-running triangle-wave oscillator that is adjustable
from 50kHz to 400kHz.
The APW7159A has been equipped with excellent pro-
tection functions: POR, OCP, UVP, and OVP protections.
The Power-On-Reset (POR) circuit can monitor the VCC
and OCSET voltage to make sure the supply voltage ex-
ceeds their threshold voltage while the controller is
running. The Over-Current Protection (OCP) monitors the
output current by using the voltage drop across the high
side MOSFET’s RDS(ON). When the output current reaches
the trip point, the controller will be latched. Under-Voltage
Protection (UVP) and Over-Voltage Protection (OVP) moni-
tor the FB voltage to protect APW7159A from burnout when
output voltage is under 50% or over 120% of normal out-
put voltage. The APW7159A is available in SOP-20
package.
VIN
Phase Shift
VOUT1
PWM
Controller
1
PWM
Controller
2
APW7159A
VOUT2
ANPEC reserves the right to make changes to improve reliability or manufacturSability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Oct., 2009
1
www.anpec.com.tw




APW7159A pdf, 반도체, 판매, 대치품
APW7159A
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over VIN=12V, VOUT= 3.3V and TA= -40 ~ 85 oC. Typical values are at TA=25oC.
Symbol
Parameter
Test Conditions
APW7159A
Min. Typ. Max.
Unit
OSCILLATOR
FOSC Free Running Frequency
RT = NC, VVCC =12V
45 50 55 kHz
Programmable Frequency Range Connect Resistor from RT to GND
45 - 400 kHz
VOSC
Total Frequency Accuracy
Ramp Amplitude (Note 4)
Over-Temperature
-10 -
10
- 1.9 -
%
V
Duty Cycle
0 - 100 %
REFERENCE VOLTAGE
VREF Reference Voltage
- 1.0 -
V
Reference Voltage Tolerance
Load Regulation (Note 4)
VVCC=10V~13.2V
IOUT1= IOUT2=0A~10A
-0.8 - +0.8 %
- 0.01 - %/A
PWM ERROR AMPLIFIERS
Open Loop Gain (Note 4)
Unity-Gain Bandwidth (Note 4)
Slew Rate (Note 4)
FB1/FB2 Input Current
RL=10k, CL=10pF (Note 4)
RL=10k, CL=10pF (Note 4)
RL=10k, CL=10pF (Note 4)
VFB1/VFB2=1.0V
- 88 - dB
- 15 - MHz
- 6 - V/µs
- - 0.1 µA
COMP1/COMP2 Source Current
VCOMP=2V
- 5 - mA
COMP1/COMP2 Sink Current
BOOT-STRAP DIODE AND SOFT-START
VCOMP=2V
- 5 - mA
VF Diode Forward Voltage
IF=10mA
- 0.8 -
V
ISS Soft-Start Charge Current
24 30 36 µA
GATE DRIVERS
IUGATE1/
IUGATE2
High Side Gate Source Current
VBOOT1=VBOOT2=12V,
VUGATE1-VPHASE1=2V/VUGATE2 – VPHASE2=2V
-
1.7
-
A
High Side Gate Sink Current
VBOOT1=VBOOT2=12V, VUGATE1-VPHASE1=
10V/VUGATE2 – VPHASE2=10V
- 1.1 -
A
ILGATE1/
ILGATE2
Low Side Gate Source Current
VVCC=12V, VLGATE1=VLGATE2=2V
- 1.9 -
A
Low Side Gate Sink Current
Dead Time 1 (Note 4)
Dead Time 2 (Note 4)
VVCC=12V,VLGATE1= VLGATE2=10V
UGATE1/UGATE2 Falling to
LGATE1/LGATE2 Rising
LGATE1/LGATE2 Falling to
UGATE1/UGATE2 Rising
- 1.6 -
A
- 40 - ns
- 40 - ns
PROTECTION
IOCSET1/
IOCSET2
OCSET1/OCSET2 Current Source
Over Voltage Protection
Measure on FB1/FB2
180 200 220
µA
115 120 125 %VREF
Under Voltage Protection
Over-Temperature Shutdown (Note 4)
Measure on FB1/FB2
45 50 55 %VREF
- 150 -
oC
Over-Temperature Hysteresis (Note 4)
- 40 - oC
Note 4: Guarantee by design, not production test
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Oct., 2009
4
www.anpec.com.tw

4페이지










APW7159A 전자부품, 판매, 대치품
APW7159A
Operating Waveforms (Cont.)
Refer to the typical application circuit. The test condition is VIN=12V, TA= 25oC unless otherwise specified.
Short-Circuit Protection
ROCSET=1k, RDS (high-side)=10m
VIN=V VCC
1
VOUT
2
3
VPHASE
4
IL
CH1: VIN=VVCC, 10V/Div
CH2: VOUT, 2V/Div
CH3: VPHASE, 10V/Div
CH4: IL, 10A/Div
Time: 50µA/Div
Over-Current Protection
VIN=Vvcc
1
VOUT
2
VPHASE
3
IL
4
CH1: VIN=VVCC, 10V/Div
CH2: VOUT, 2V/Div
CH3: VPHASE, 10V/Div
CH4: IL, 10A/Div
Time: 10ms/Div
UGATEFalling
IOUT =10A
VUGATE
12
VPHASE
3
VLGATE
CH1: VUGATE, 10V/Div
CH2: VLGATE, 5V/Div
CH3: VPHASE, 10V/Div
Time: 20ns/Div
UGATE Rising
IOUT=10A
VLGATE
VUGATE
12
VPHASE
3
CH1: VUGATE, 10V/Div
CH2: VLGATE, 5V/Div
CH3: VPHASE, 10V/Div
Time: 20ns/Div
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Oct., 2009
7
www.anpec.com.tw

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부품번호상세설명 및 기능제조사
APW7159A

Dual Channel Synchronous Buck PWM Controller

ANPEC
ANPEC

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