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APW7159A Datasheet Download - ANPEC

Номер произв APW7159A
Описание Dual Channel Synchronous Buck PWM Controller
Производители ANPEC
логотип ANPEC логотип 



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APW7159A Даташит, Описание, Даташиты
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







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APW7159A Даташит, Описание, Даташиты
APW7159A
Ordering and Marking Information
APW7159A
APW7159A K:
Assembly Material
Handling Code
Temperature Range
Package Code
APW7159A
XXXXX
Package Code
K : SOP-20
Operating Ambient Temperature Range
I : -40 to 85oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
XXXXX - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Pin Configuration
FB1 1
COMP1 2
OCSET1 3
GND 4
VCC 5
BOOT1 6
UGATE1 7
PHASE1 8
LGATE1 9
PGND 10
20 RT
19 SS
18 FB2
17 COMP2
16 OCSET2
15 BOOT2
14 UGATE2
13 PHASE2
12 LGATE2
11 NC
SOP-20
(Top View)
Absolute Maximum Ratings (Note 1)
Symbol
VVCC
VBOOT1/2
Parameter
Input Bias Supply Voltage (VCC to GND)
BOOT1/ BOOT2 to PHASE1/PHASE2 Voltage
UGATE1/UGATE2 to PHASE1/PHASE2
<400ns pulse width
>400ns pulse width
LGATE1/LGATE2 to PGND Voltage
<400ns pulse width
>400ns pulse width
PHASE1/PHASE2 to PGND Voltage
<400ns pulse width
>400ns pulse width
RT, SS, COMP1, COMP2, FB1, FB2 to GND Voltage
OCSET1, OCSET2 to GND
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Oct., 2009
2
Rating
-0.3 ~ 16
-0.3 ~ 16
-5 ~ VBOOT1/2+5
-0.3 ~ VBOOT1/2+0.3
-5 ~ VVCC+0.3
-0.3 ~ VVCC+0.3
-10 ~ 30
-0.3 ~ 16
-0.3 ~ 7
-0.3 ~ VVCC+0.3
Unit
V
V
V
V
V
V
V
V
V
V
www.anpec.com.tw







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APW7159A Даташит, Описание, Даташиты
APW7159A
Absolute Maximum Ratings (Cont.) (Note 1)
Symbol
Parameter
Rating
Unit
PGND to GND Voltage
-0.3 ~ 0.3
V
PD
TSTG
TSDR
Power Dissipation
Maximum Junction Temperature
Storage Temperature
Maximum Lead Soldering Temperature, 10 Seconds
Internally Limited
150
-65 ~ 150
260
W
oC
oC
oC
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Thermal Characteristics
Symbol
θJA
Parameter
Junction-to-Ambient Thermal Resistance in Free Air (Note 2)
SOP-20
Typical Value
100
Note 2: θJA is measured with the component mounted on a high effective thermal conductivity test board in free air.
Recommended Operating Conditions (Note 3)
Symbol
Parameter
VVCC Input Bias Supply Voltage (VCC to GND)
VIN1/VIN2 Converter Input Voltage
VOUT1/VOUT2 Converter Output Voltage
IOUT1/IOUT2 Converter Output Current
TA Ambient Temperature
TJ Junction Temperature
Note 3 : Refer to the typical application circuit
Range
10 ~ 13.2
2 ~ 13.2
1 ~ VIN1/VIN2
0 ~ 30
-40 ~ 85
-40 ~ 125
Unit
°C/W
Unit
V
V
V
A
oC
oC
Electrical Characteristics
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
SUPPLY CURRENT
VCC Supply Current (Shutdown
Mode)
VVCC<5V, SS=GND
- 0.5 1 mA
VCC Supply Current (Shutdown
Mode)
5V< VVCC <9V, SS=GND
- 0.8 1.6 mA
IVCC VCC Supply Current
UGATE1/UGATE2 and
LGATE1/LGATE2 open
- 5 10 mA
POWER-ON-RESET (POR) AND LOCKOUT VOLTAGE THRESHOLDS
Rising VCC Threshold
9 9.5 10 V
Falling VCC Threshold 1
7.5 8 8.5 V
Falling VCC Threshold 2
- 4.6 -
V
Rising VOCSET1/VOCSET2 Threshold
- 1.6 -
V
Falling VOCSET1/VOCSET2 Threshold
- 1.0 -
V
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Oct., 2009
3
www.anpec.com.tw










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