APW3007 Datasheet, PDF (1/12 Pages) Anpec Electronics Coropration – Advanced Dual PWM and Dual Linear Power Controller

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