描述 Description

The uP1649 is a VR12.5 compliant CPU power controllersupports up to 4 phases. The integrated I2C interfaceprogrammability makes the uP1649 high performance andeasy design. Designer can define different power scenariofor different current states to optimize the performanceand efficiency.

The uP1649 combines true differential voltage sensing,differential inductor DCR current sensing, input voltagefeed-forward and adaptive voltage positioning to provideaccurately regulated power for desktop CPUs. It adoptsuPI proprietary RCOTTM (Robust Constant On-Time)topology to have fast transient response and smooth modetransition. Similar to digital based PWM controller, the loopgain is also programmable by I2C interface to achievedesign flexibility.

The uP1649 provides VR_READY indicator. It alsofeatures complete fault protection functions including overvoltage, under voltage, over current, over temperature andunder voltage lockout. The uP1649 is available inVQFN5X5-40L package.

特性 Features

·Intel VR12.5 Compliant.
·RCOTTM Control Topology
·Easy Setting.
·Smooth Mode Transient.
·Fast Transient Response.

·True Differential Current Balance Sense Amplifier.
·Differential Remote Voltage Sensing.
·Build-in ADC for Platform Setting.
·I2C Interface for Performance and Efficiency Optimization
·Dynamic Programmable VR Parameters.
·Programmable Protection Thresholds.
·VR Reporting.
·Programmable Loop Gain.

·Enable Control and VR_READY Indicator.
·H/W OCP Alert for System Protection.
·System Thermal Management.
·OCP/OVP/UVP.
·RoHS Compliant and Halogen Free.

應(yīng)用 Application

·Desktop PC Core Power Supplies.