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APW3007-12

Advanced Dual PWM and Dual Linear Power Controller

Anpec Electronics 

APW3007

Advanced Dual PWM and Dual Linear Power Controller

Features

General Description

• Provides 4 Regulated Voltages

The APW3007 provides the power control and pro-

− Microprocessor Core , I/O , Clock Chip and

tection for four output voltage in high-performance mi-

croprocessor and computer applications.

GTL Bus

The APW3007 is designed to provide termination

• Simple Single-Loop Control Design

− Voltage-Mode PWM Control

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

• Fast Transient Response

− High-Bandwidth Error Amplifier

protection function into a single package. One PWM

controller regulates the microprocessor core voltage

with a synchronous-rectified buck converter , while the

− Full 0% to 100% Duty Ratio

• Excellent Output Voltage Regulation

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

− Core PWM Output : ±1% Over Temperature

− I/O PWM Output : ±2% Over Temperature

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-

− Other Output : ±2.5% Over Temperature

• Power-Good Output Voltage Monitor

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

• Microprocessor Core Voltage Protection Against voltage and the other levels are above their under-

voltage levels. Additional built-in over-voltage protec-

Shorted MOSFET

tion for the core output uses the lower MOSFET to

• Over-Voltage and Over-Current Fault Monitors prevent output voltage above 115% of the reference

• Small Converter Size

voltage. The PWM controller’s over-current function

monitor the output current by sensing the voltage drop

− Constant Frequency Operation

− 200kHz Free-Running Oscillator ;

across the upper MOSFET’s R , eliminating the

DS(ON)

need for a current sensing resistor.

Programmagle from 50kHz to 800kHz

Applications

• Motherboard Power Regulation for Computers

• Low-Voltage Distributed Power Supplies

• VGA Card Power Regulation

• Termination Voltage

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.

Copyright  ANPEC Electronics Corp.

1

Rev. A.5 - Jun., 2003

www.anpec.com.tw

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