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ADP3204

Analog Devices
Part Number ADP3204
Manufacturer Analog Devices
Description 3-Phase IMVP-II and IMVP-III Core Controller
Published Mar 23, 2005
Detailed Description a FEATURES Pin Selectable 1-, 2-, or 3-Phase Operation Static and Dynamic Current Sharing Characteristics Backward Compa...
Datasheet PDF File ADP3204 PDF File

ADP3204
ADP3204

Overview
a FEATURES Pin Selectable 1-, 2-, or 3-Phase Operation Static and Dynamic Current Sharing Characteristics Backward Compatible to IMVP-II Superior Load Transient Response with ADOPT® Analog Devices’ Optimal Positioning Technology Noise-Blanking for Speed and Stability Synchronous Rectifier Control Extends Battery Life Smooth Output Transition During VID Code Change Cycle-by-Cycle Current Limiting Hiccup or Latched Overload Protection Transient-Glitch-Free Power Good Soft Start Eliminates Power-On In-Rush Current Surge Two-Level Overvoltage and Reverse Voltage Protection APPLICATIONS IMVP-II and IMVP-III Core DC-to-DC Converters Fixed Voltage Mobile CPU Core DC-to-DC Converters Notebook/Laptop Power Supplies Programmable Output Power Supplies 3-Phase IMVP-II and IMVP-III Core Controller for Mobile CPUs ADP3204* FUNCTIONAL BLOCK DIAGRAM VCC HYSSET DSHIFT BSHIFT DPRSHIFT BOM DPSLP DPRSLP HYSTERESIS SETTING AND SHIFT-MUX ADP3204 VR PHASE SPLITTER OUT3 OUT2 OUT1 CS3 CLIM CS2 CURRENT SENSE MUX CS1 CS+ CS– RAMP REG EN CORE VID4 VID3 VID2 VID1 VID0 DPRSLP VID GEN DPRSLP BOM DPSLP VID MUX AND REG 5-BIT VID DAC AND FIXED REF DACOUT DACRAMP GENERAL DESCRIPTION VR The ADP3204 is a 1-, 2-, or 3-phase hysteretic peak current dc-to-dc buck converter controller dedicated to power a mobile processor’s core.
The optimized low voltage design is powered from the 3.
3 V system supply.
The nominal output voltage is set by a 5-bit VID code.
To accommodate the transition time required by the newest processors, the ADP3204 features high speed operation to allow a minimized inductor size that results in the fastest change of current to the output.
To further allow for the minimum number of output capacitors to be used, the ADP3204 features active voltage positioning with ADOPT optimal compensation to ensure a superior load transient response.
The output signals interface with a maximum of three ADP3415 MOSFET drivers that are optimized for high speed and high efficiency for drivi...


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