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參數(shù)資料
| 型號： | APW3007 |
| 廠商： | Anpec Electronics Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Advanced Dual PWM and Dual Linear Power Controller |
| 中文描述： | 先進的雙PWM和線性雙電源控制器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 133K |
| 代理商： | APW3007 |
Copyright
ANPEC Electronics Corp.
Rev. A.5 - Jun., 2003
APW 3007
www.anpec.com.tw
1
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain
the latest version of relevant information to verify before placing orders.
Advanced Dual PWM and Dual Linear Power Controller
Provides 4 Regulated Voltages
Microprocessor Core , I/O , Clock Chip and
GTL Bus
Simple Single-Loop Control Design
Voltage-Mode PWM Control
Fast Transient Response
High-Bandwidth Error Amplifier
Full 0% to 100% Duty Ratio
Excellent Output Voltage Regulation
Core PWM Output :
±
1% Over Temperature
I/O PWM Output :
±
2% Over Temperature
Other Output :
±
2.5% Over Temperature
Power-Good Output Voltage Monitor
Microprocessor Core Voltage Protection Against
Shorted MOSFET
Over-Voltage and Over-Current Fault Monitors
Small Converter Size
Constant Frequency Operation
200kHz Free-Running Oscillator ;
Programmagle from 50kHz to 800kHz
Features
General Description
The APW3007 provides the power control and pro-
tection for four output voltage in high-performance mi-
croprocessor and computer applications.
The APW3007 is designed to provide termination
voltage VTT(1.25V) with ±1% accuracy
.
It integrates two PWM controllers , a linear regulator
and a liear controller as well as the monitoring and
protection function into a single package. One PWM
controller regulates the microprocessor core voltage
with a synchronous-rectified buck converter , while the
second PWM controller supplies the I/O 3.3V power
with a standard buck converter. The linear controller
regulates power for GTL bus and the intermal 200mA
regulator for clock driver circuits.
The APW3007 can provide in excess of 14A of out-
put current for an on-board DC/DC converter via in-
ternal reference voltage. It can monitor all the output
voltage , and a single Power Good signal is issued
when the core is within 10% of the internal reference
voltage and the other levels are above their under-
voltage levels. Additional built-in over-voltage protec-
tion for the core output uses the lower MOSFET to
prevent output voltage above 115% of the reference
voltage. The PWM controller’s over-current function
monitor the output current by sensing the voltage drop
across the upper MOSFET’s R
, eliminating the
need for a current sensing resistor.
Applications
Motherboard Power Regulation for Computers
Low-Voltage Distributed Power Supplies
VGA Card Power Regulation
Termination Voltage
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