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ADP3210
7-Bit Programmable Multiphase Mobile CPU Synchronous
ADP3210
7-Bit, Programmable,
Multiphase Mobile CPU
Synchronous Buck
Controller
The ADP3210 is a high efficiency, multiphase, synchronous,
buckïswitching regulator controller optimized for converting
notebook battery voltage into the core supply voltage of high
performance Intel processors. The part uses an internal 7ïbit DAC to
read V oltage Identification (VID) code directly from the processor that
sets the output voltage. The phase relationship of the output signals
can be configured for 1ï, 2ï, or 3ïphase operation, with interleaved
switching.
The ADP3210 uses a multiïmode architecture to drive the
logicïlevel PWM outputs at a switching frequency selected by the
user depending on the output current requirement. The part switches
between multiphase and singleïphase operation according to a system
signal provided by the CPU. Shedding phases as function of the load
maximizes power conversion efficiency under different load
conditions. In addition, the ADP3210 supports programmable
loadïline resistance adjustment. As a result, the output voltage is
always optimally positioned for a load transient.
The chip also provides accurate and reliable shortïcircuit protection
with adjustable current limit threshold and a delayed powerïgood
output that is masked during OnïTheïFly (OTF) output voltage
changes to eliminate false alarm.
The ADP3210 performance is specified over the extended
commercial temperature range of ï10°C to 100°C. The chip is
available in a 40ïlead QFN package.
Features 1ï, 2ï, or 3ïPhase Operation at Up to 1 MHz per Phase Input V oltage Range of 3.3 V to 22 V ±6 mV WorstïCase Differential Sensing Error Overtemperature Interleaved PWM Outputs for Driving External High Power
MOSFET Drivers Automatic PowerïSaving Modes Maximize Efficiency During Light
Load and Deeper Sleep Operation Active Current Balancing Between Output Phases Independent Current Limit and Load Line Setting Inputs for
Additional Design Flexibility 7ïBit Digitally Programmable 0 V to 1.5 V Output Overload and ShortïCircuit Protection with Latchoff Delay BuiltïIn Clock Enable Output for Delaying CPU Clock
Synchronization Until CPU Supply Voltage Stabilizes Output Current Monitor This is a PbïFree Device
Applications
http://
QFN40
MN SUFFIX
CASE 488AR
ORDERING INFORMATION
ADP3210
AWLYYWWG = Assembly Location = Wafer Lot = Year = Work Week = PbïFree Package
PIN ASSIGNMENT
MARKING DIAGRAM140
ADP3210
(top view)
PWRGD
IMON
CLKEN
FBRTN
COMP
TRDET
DPRSLP
TTSN
VRTT
DCM1
PWM1
SW1
PWM2
PWM3
SW2
SW3
