ADP3198
FEATURES
Selectable 2-, 3-, or 4-phase operation at up to 1 MHz per phase
±11 m V worst-case differential sensing error over temperature
Logic-level PWM outputs for interface to external high power drivers
Enhanced PWM flex mode for excellent load transient performance
Active current balancing between all output phases Built-in power-good/crowbar blanking supports on-the-fly
VID code changes Digitally programmable 0.5 V to 1.6 V output supports both
VR10.x and VR11 specifications Programmable short-circuit protection with programmable latch-off delay
APPLICATIONS
Desktop PC power supplies for next generation Intel® processors VRM modules
GENERAL DESCRIPTION
The ADP31981 is a highly efficient, multiphase, synchronous buck switching regulator controller optimized for converting a 12 V main supply into the core supply voltage required by high performance Intel processors. It uses an internal 8-bit DAC to read a voltage identification (VID) code directly from the processor, which is used...
