6位可编程2至4相同步降压控制器 6-Bit Programmable 2- to 4-Phase Synchronous Buck Controller
GENERAL DESCRIPTION
The ADP31961 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 Advanced Micro Devices, Inc. AMD processors. It uses an internal 6-bit DAC to read a voltage identification VID code directly from the processor, which is used to set the output voltage between 0.3750 V and 1.55 V.
FEATURES
Selectable 2-, 3-, or 4-phase operation at up to 1 MHz per phase
±10 mV 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 0.3750 V to 1.55 V output
Programmable short-circuit protection with programmable latch-off delay
APPLICATIONS
Desktop PC power supplies for next generation
AMD processors
VRM modules
