The ADP3293 is a highly efficient, multi−phase, synchronous buck switching regulator controller optimized for converting a 12 V main supply voltage into the core supply voltage of high performance Intel processors. It uses an internal 8−bit DAC to read a voltage identification (VID) code directly from the processor, to set the output voltage between 0.5 V and 1.6 V.

Features

• Selectable 2− or 3−Phase Operation at Up to 1 MHz per Phase

• ±7 mV Worse−Case Differential Sensing Error

• Logic−Level PWM Outputs for Interface to External High Power Drivers

• Fast−Enhanced PWM FlexMode for Excellent Load Transient Performance

• TRDET to Improve Load Release

• Active Current Balancing Between All Output Phases

• Built−In Power−Good/Crowbar Blanking Supports Dynamic VID Code Changes

• Digitally Programmable 0.5 V to 1.6 V Output Supports VR11.1 Specification

• Programmable Overcurrent Protection with Programmable Latchoff Delay

• This is a Pb−Free Device

Typical Applications

• Desktop PC Power Supplies for:

♦ Next Generation Intel® Processors

♦ VRM Modules