3-Phase IMVP-II and IMVP-III Core Controller
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FEATURES Pin Selectable 1-, 2-, or 3-Phase Operation Static and Dynamic Current Sharing Characteristics Backward Compa...
Description
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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...
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