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  ON Semiconductor Electronic Components Datasheet  

ADP3212 Datasheet

Mobile CPU Synchronous Buck Controller

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ADP3212 pdf
ADP3212, NCP3218,
NCP3218G
7-Bit, Programmable,
3-Phase, Mobile CPU
Synchronous Buck Controller
The APD3212/NCP3218/NCP3218G is a highly efficient,
multiphase, synchronous buck switching regulator controller. With
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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 7bit 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
1 48
1 48
of 0.3 V to 1.5 V. The APD3212/NCP3218/NCP3218G is
QFN48
QFN48
programmable for 1, 2, or 3phase operation. The output signals
CASE 485AJ
CASE 485BA
ensure interleaved 2or 3phase 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 singleand
multiphase operation to maximize efficiency with all load conditions.
MARKING DIAGRAM
1
xxx = Specific Device Code
(ADP3212 or NCP3218/G)
xxP321x
A = Assembly Location
AWLYYWWG WL = Wafer Lot
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/
YY = Year
WW = Work Week
G = PbFree Package
NCP3218/NCP3218G also provides accurate and reliable shortcircuit
protection, adjustable current limiting, and a delayed powergood
ORDERING INFORMATION
output. The IC supports OnTheFly (OTF) output voltage changes
requested by the CPU.
See detailed ordering and shipping information in the package
dimensions section on page 33 of this data sheet.
The APD3212/NCP3218/NCP3218G are specified over
the extended commercial temperature range of 40°C to
100°C. The ADP3212 is available in a 48lead QFN 7x7mm
0.5mm pitch package. The NCP3218/NCP3218G is
available in a 48lead 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
Active Current Balancing Between Output Phases
Independent Current Limit and Load Line Setting
Inputs for Additional Design Flexibility
BuiltIn PowerGood Blanking Supports Voltage
Identification (VID) OnTheFly (OTF) Transients
7Bit, Digitally Programmable DAC with 0.3 V to
1.5 V Output
ShortCircuit Protection with Programmable Latchoff
are HalogenFree, PbFree and RoHS compliant.
Delay
Features
SingleChip Solution
Fully Compatible with the Intel® IMVP6.5t
Specifications
Selectable 1, 2, or 3Phase 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 WorstCase Differentially Sensed
Clock Enable Output Delays the CPU Clock Until the
Core Voltage is Stable
Output Power or Current Monitor Options
48Lead QFN 7x7mm (ADP3212), 48Lead QFN
6x6mm (NCP3218/NCP3218G)
Vboot = 1.1 V (ADP3212/NCP3218)
Vboot = 987.5 mV (NCP3218G)
These are PbFree Devices
Fully RoHS Compliant
Core Voltage Error Over Temperature
Applications
Automatic PowerSaving Mode Maximizes Efficiency
Notebook Power Supplies for NextGeneration Intel
with Light Load During Deeper Sleep Operation
Processors
© Semiconductor Components Industries, LLC, 2012
August, 2012 Rev. 4
1
Publication Order Number:
ADP3212/D


  ON Semiconductor Electronic Components Datasheet  

ADP3212 Datasheet

Mobile CPU Synchronous Buck Controller

No Preview Available !

ADP3212 pdf
ADP3212, NCP3218, NCP3218G
PIN ASSIGNMENT
EN
PWRGD
IMON
CLKEN
FBRTN
FB
COMP
TRDET
VARFREQ
VRTT
TTSNS
GND
1
ADP3212
NCP3218
(top view)
BST1
DRVH1
SW1
SWFB1
PVCC
DRVL1
PGND
DRVL2
SWFB2
SW2
DRVH2
BST2
GND
VCC EN RPM RT RAMP VARFREQ
TRDET
COMP
FB
LLINE
SWFB1
SWFB2
SWFB3
PH0
PH1
PWRGD
CLKEN
FBRTN
GTeRneDrEatTor
UVLO
Shutdown
and Bias
Oscillator
+S
REF +
VEA
+
CSREF
+S _
1.55 V
Current
Balancing
Circuit
OVP
Driver
Logic
DAC + 200 mV
CSREF
+
+
DAC 300 mV
PWRGD
Open
Drain
CLKEN
Open
Drain
Precision
Reference
Number of
Phases
OCP
Shutdown
Delay
PWRGD
Start Up
Delay
CLKEN
Start Up
Delay
Current
Limit
Circuit
Soft
Transient
Delay
Delay
Disable
VID
DAC
DAC
REF
PVCC
PGND
PSI and
DPRSLP
Logic
CCuurrerennt t
MMoonnitiotor r
+
Thermal
Throttle
Control
Soft Start
BST1
DRVH1
SW1
PVCC
DRVL1
PGND
BST2
DRVH2
SW2
DRVL2
OD3
PWM3
PSI
DPRSLP
IMON
CSREF
CSSUM
CSCOMP
ILIM
TTSENSE
VRTT
Figure 1. Functional Block Diagram
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2


Part Number ADP3212
Description Mobile CPU Synchronous Buck Controller
Maker ON Semiconductor
Total Page 30 Pages
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