CHL8328-18CRT Description

The CHL8328-18CRT is a  dual-loop digital multi-phase buck controller. It is fully Intel? VR12 and AMD? SVI/PVI compliant on both loops and provides a Vtt tracking function for DDR memory.

CHL8328-18CRT Features

• 6-phase & 8-phase dual output PWM Controller

• Phases are flexibly assigned between Loops 1 & 2

• Intel? VR12, AMD? 3.4MHz SVI/PVI & Memory modes

• Overclocking & Gaming Mode with Vmax setting switching frequency from 200kHz to 1.2MHz per phase

• IR Efficiency Shaping Features including Variable Gate Drive and Dynamic Phase Control

• Programmable 1-phase or 2-phase for Light Loads and Active Diode Emulation for Very Light Loads

• IR Adaptive Transient Algorithm (ATA) on both loops  minimizes output bulk capacitors and system cost

• Auto-Phase Detection with auto-compensation

• Per-Loop Fault Protection: OVP, UVP, OCP, OTP, CFP

• I2C/SMBus/PMBus system interface for telemetry of Temperature, Voltage, Current & Power for both loops

• Non-Volatile Memory (NVM) for custom configuration

• Compatible with IR ATL and 3.3V Tri-state Drivers

• +3.3V supply voltage; -20oC to 85oC ambient operation

• Pb-Free, RoHS, 7x7 48-pin & 8x8 56-pin QFN, MSL2 package

CHL8328-18CRT Applications

• Intel ? VR12 & AMD? SVI & PVI-based systems

• DDR Memory with Vtt tracking

• Overclocked & Gaming platforms