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ADP3212
7-Bit Programmable, 3-Phase, Mobile CPU Synchronous Buck Controller
ADP3212, NCP3218,
NCP3218G
7-Bit, Programmable,
3-Phase, Mobile CPU
Synchronous Buck Controller
The APD3212/NCP3218/NCP3218G is a highly efficient,
multiïphase, synchronous buck switching regulator controller. With
its integrated drivers, the APD3212/NCP3218/NCP3218G is
optimized for converting the notebook battery voltage into the core
supply voltage required by high performance Intel processors. An
internal 7ïbit DAC is used to read a VID code directly from the
processor and to set the CPU core voltage to a value within the range
of 0.3 V to 1.5 V. The APD3212/NCP3218/NCP3218G is
programmable for 1ï, 2ï, or 3ïphase operation. The output signals
ensure interleaved 2ï or 3ïphase operation.
The APD3212/NCP3218/NCP3218G uses a multimode architecture
run at a programmable switching frequency and optimized for
efficiency depending on the output current requirement. The
APD3212/NCP3218/NCP3218G switches between singleï and
multiïphase operation to maximize efficiency with all load conditions.
The chip includes a programmable load line slope function to adjust the
output voltage as a function of the load current so that the core voltage is
always optimally positioned for a load transient. The APD3212/
NCP3218/NCP3218G also provides accurate and reliable shortïcircuit
protection, adjustable current limiting, and a delayed powerïgood
output. The IC supports OnïTheïFly (OTF) output voltage changes
requested by the CPU.
The APD3212/NCP3218/NCP3218G are specified over
the extended commercial temperature range of ï40°C to
100°C. The ADP3212 is available in a 48ïlead QFN 7x7mm
0.5mm pitch package. The NCP3218/NCP3218G is
available in a 48ïlead QFN 6x6mm 0.4mm pitch package.
ADP3212/NCP3218 has 1.1 V Vboot Voltage, while
NCP3218G has 987.5 mV Vboot Voltage. Except for the
packages and Vboot Voltages, the APD3212/NCP3218/
NCP3218G are identical. APD3212/NCP3218/NCP3218G
are HalogenïFree, PbïFree and RoHS compliant.
Features SingleïChip Solution Fully Compatible with the Intel IMVPï6.5
Specifications Selectable 1ï, 2ï, or 3ïPhase Operation with Up to 1
MHz per Phase Switching Frequency Phase 1 and Phase 2 Integrated MOSFET Drivers Input Voltage Range of 3.3 V to 22 V Guaranteed ±8 mV WorstïCase Differentially Sensed
Core V oltage Error Over Temperature Automatic PowerïSaving Mode Maximizes Efficiency Active Current Balancing Between Output Phases Independent Current Limit and Load Line Setting
Inputs for Additional Design Flexibility BuiltïIn PowerïGood Blanking Supports V oltage
Identification (VID) OnïTheïFly (OTF) Transients 7ïBit, Digitally Programmable DAC with 0.3 V to
1.5 V Output ShortïCircuit Protection with Programmable Latchoff
Delay Clock Enable Output Delays the CPU Clock Until the
Core V oltage is Stable Output Power or Current Monitor Options 48ïLead QFN 7x7mm (ADP3212), 48ïLead QFN
6x6mm (NCP3218/NCP3218G) Vboot = 1.1 V (ADP3212/NCP3218)
Vboot = 987.5 mV (NCP3218G) These are PbïFree Devices Fully RoHS Compliant
Applications Notebook Power Supplies for NextïGeneration Intel
http://
QFN48
CASE 485AJ
See detailed ordering and shipping information in the package
dimensions section on page 33 of this data sheet.
ORDERING INFORMATION
xxP321x
AWLYYWWG
xxx = Specific Device Code
(ADP3212 or NCP3218/G) = Assembly Location = Wafer Lot = Year = Work Week = PbïFree Package
MARKING DIAGRAM
QFN48
CASE 485BA11 48
