7-Bit, Programmable, 3-Phase, Mobile CPU Synchronous Buck Controller

The APD3212A/NCP3218A is a highly efficient, multi−phase, synchronous buck switching regulator controller. With its integrated drivers, the APD3212A/NCP3218A is optimized for converting the notebook battery voltage into the core supply voltage required by high performance Intel processors.

Features

•Single−Chip Solution

•Fully Compatible with the Intel® IMVP−6.5 Specifications

•Selectable 1−, 2−, or 3−Phase 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 Worst−Case Differentially Sensed Core Voltage Error Over Temperature

•Automatic Power−Saving 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

Applications

•Notebook Power Supplies for Next−Generation Intel Processors

•Built−In Power−Good Blanking Supports Voltage Identification (VID) On−The−Fly (OTF) Transients

•7−Bit, Digitally Programmable DAC with 0.3 V to 1.5 V Output

•Short−Circuit Protection with Programmable Latchoff Delay

•Clock Enable Output Delays the CPU Clock Until the Core Voltage is Stable

•Output Power or Current Monitor Options

•48−Lead QFN 7x7mm (ADP3212A), 48−Lead QFN 6x6mm (NCP3218A)

•These are Pb−Free Devices

•Fully RoHS Compliant