DESCRIPTION

· The IR3536/CHL8326 and IR3538/CHL8328 are dual-loop digital multi-phase buck controllers.

· IR3536/CHL8326 supports up to 6 phases; IR3538/CHL8328 supports up to 8 phases.

· Compliant with Intel® VR12 and AMD® SVI/PVI standards, featuring Vtt tracking for DDR memory.

· Incorporates IR Efficiency Shaping Technology for optimized efficiency across all load ranges.

· Features IR Variable Gate Drive and Dynamic Phase Control for enhanced performance.

· Adaptive Transient Algorithm (ATA) minimizes output bulk capacitors.

· Supports I2C/PMBus interface for communication with up to 16 VR loops.

· Includes comprehensive fault protection: OVP, UVP, OCP, OTP.

FEATURES

· 6-phase & 8-phase dual output PWM Controller with flexible phase assignment.

· Supports Intel® VR12, AMD® 3.4MHz SVI/PVI, and Memory modes.

· Overclocking & Gaming Mode with Vmax setting.

· Switching frequency ranges from 200kHz to 1.2MHz per phase.

· Programmable 1-phase or 2-phase operation for light loads and active diode emulation for very light loads.

· Auto-Phase Detection with auto-compensation.

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

· I2C/SMBus/PMBus system interface for telemetry.

· Non-Volatile Memory (NVM) for custom configuration.

APPLICATIONS

· Intel® VR12 & AMD® SVI & PVI based systems.

· DDR Memory with Vtt tracking.

· Overclocked & Gaming platforms.