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APW7015

Anpec Electronics Coropration
Part Number APW7015
Manufacturer Anpec Electronics Coropration
Description Advanced PWM and Dual Linear Power Controller
Published Nov 17, 2008
Detailed Description APW7015 Advanced PWM and Dual Linear Power Control Features • 3 Regulated Voltage are provided General Description The...
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APW7015
APW7015

Overview
APW7015 Advanced PWM and Dual Linear Power Control Features • 3 Regulated Voltage are provided General Description The APW7015 integrates a PWM controller and Dual linear controller, as well as the monitoring and protection functions into a single package, which provides three controlled power outputs with over-voltage and over-current protections.
The PWM controller regulates the DDR reference voltage with a synchronous-rectified buck converter.
The linear controller regulates power for microprocessor core voltage and Memory Voltage.
TTL Compatible 3-bit digital-to-analog converter (DAC) that adjusts the output voltage from 1.
3VDC to 1.
65VDC in 0.
05V steps is included in APW7015.
The precision reference and voltage-mode PWM control provide ±2% static regulation.
The linear controller drives an external N-channel MOSFET to provide adjustable voltage.
The APW7015 monitors all the output voltages, and a single Power Good signal is issued when the PWM Voltage is within 10% of the DAC setting and the other output levels are above their under-voltage thresholds.
Additional built-in over-voltage protection for the PWM output uses the lower MOSFET to prevent output voltages above 115% of the DAC setting.
The PWM over-current function monitors the output current by using the voltage drop across the upper MOSFET’s RDS(ON) ,eliminating the need for a current sensing resistor.
www.
DataSheet4U.
com • Switching Power for VTT(1.
25V) • Linear1 Regulator for FBVDDQ(2.
5V) • Linear2 Regulator for NVVDD(2.
05V) Simple Single-Loop Control Design • • • Voltage-Mode PWM Control Excellent Output Voltage Regulation • PWM Output: ±2% Full Temperature • Linear Output: ±3% Full Temperature • Fast Transient Response • High-Bandwidth Error Amplifier • Full 0% to 100% Duty Ratio • TTL-Compatible 3-Bit Digital-to-Analog Output Voltage Selection • 0.
05V Steps from 1.
3VDC to 1.
65VDC • Power-Good Output Voltage Monitor • Over-Voltage and Over-Current Fault • Monitors Small Converter ...


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