The APD3212/NCP3218/NCP3218G is a highly efficient, multiâphase, 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 7âbit 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 1â, 2â, or 3âphase operation. The output signals ensure interleaved 2â or 3âphase 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 singleâ and multiâphase 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 shortâcircuit protection, adjustable current limiting, and a delayed powerâgood output. The IC supports OnâTheâFly (OTF) output voltage changes requested by the CPU.
The APD3212/NCP3218/NCP3218G are specified over the extended commercial temperature range of â40°C to 100°C. The ADP3212 is available in a 48âlead QFN 7x7mm 0.5mm pitch package. The NCP3218/NCP3218G is available in a 48âlead 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 HalogenâFree, PbâFree and RoHS compliant.
Features
⢠SingleâChip Solution
⢠Fully Compatible with the Intel® IMVPâ6.5⢠Specifications
⢠Selectable 1â, 2â, or 3âPhase 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 WorstâCase Differentially Sensed Core Voltage Error Over Temperature
⢠Automatic PowerâSaving Mode Maximizes Efficiency with Light Load During Deeper Sleep Operation
⢠Active Current Balancing Between Output Phases
⢠Independent Current Limit and Load Line Setting Inputs for Additional Design Flexibility
⢠BuiltâIn PowerâGood Blanking Supports Voltage Identification (VID) OnâTheâFly (OTF) Transients
⢠7âBit, Digitally Programmable DAC with 0.3 V to 1.5 V Output
⢠ShortâCircuit Protection with Programmable Latchoff Delay
⢠Clock Enable Output Delays the CPU Clock Until the Core Voltage is Stable
⢠Output Power or Current Monitor Options
⢠48âLead QFN 7x7mm (ADP3212), 48âLead QFN 6x6mm (NCP3218/NCP3218G)
⢠Vboot = 1.1 V (ADP3212/NCP3218)
Vboot = 987.5 mV (NCP3218G)
⢠These are PbâFree Devices
⢠Fully RoHS Compliant
Applications
⢠Notebook Power Supplies for NextâGeneration Intel Processors
|