IR36021

DIGITAL POL BUCK CONTROLLER with I2C AND PMBus Interface IR36021 FEATURES Dual output (2+1) Digital Controller with proprietary control algorithm Two‐phase operation available on Output #1 for powering very high current ASICs and DSPs I2C /PMBus interface for configuration & telemetry with pin programmable address Operating ambient temperature: ‐400C to 850C 3.3V bias operation Independent loop switching frequencies from 200kHz to 2MHz per phase IR Efficiency Shaping with Dynamic Phase Control (DPC) Active Diode Emulation modes for light load efficiency IR Adaptive Transient Algorithm (ATA) minimizes output bulk capacitors and system cost Independent OVP, UVP, OCP for each output Thermal Protection (OTP) and VRHOT# flag Multiple time programmable (MTP) memory for custom configuration Flexible I2C bus security features Pb‐Free, RoHS, 32‐pin 5mm X 5mm QFN package BASIC APPLICATION DESCRIPTION The IR36021 is a dual‐loop digital multi‐phase buck controller designed for point of load applications. The IR36021 include Efficiency Shaping Technology to deliver exceptional efficiency at minimum cost across the entire load range. Dynamic Phase Control adds/drops active phases based upon load current and can be configured to enter 1‐phase operation and diode emulation mode automatically or by command. IR’s unique Adaptive Transient Algorithm (ATA), based on proprietary non‐linear digital PWM algorithms, minimizes output bulk capacitors and Multiple Time Pr...