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
