Digital Multi-Phase DC-DC Buck Controller IC 48-Pin QFN EP T/R 3k

The IR3536 is dual-loop digital multi-phase buck controllers. The IR3536 drive up to 6 phase. The IR3536 is fully Intel VR12 and AMD SVI/PVI compliant on both loops and provide a Vtt tracking function for DDR memory. The IR3536 include the IR Efficiency Shaping Technology to deliver exceptional efficiency at minimum cost across the entire load range. IR Variable Gate Drive optimizes the MOSFET gate drive voltage based on real-time load current. IR Dynamic Phase Control adds/drops phases based upon load current. The IR3536 can be configured to enter 1-phase operation and active diode emulation mode automatically or by command. IR’s unique Adaptive Transient Algorithm (ATA), based on proprietary non-linear digital PWM algorithms, minimize s output bulk capacitors. The I2C/PMBus interface can communicate with up to 16 IR3536 based VR loops. Device configuration and fault parameters are easily defined using the IR Intuitive Power Designer (DPDC) GUI and stored in on-chip NVM. The IR3536 provides extensive OVP, UVP, OCP and OTP fault protection and includes thermistor based temperature sensing with VR_HOT signal. NVM storage saves pins and enables a small package size. The IR3536 also include numerous features like register diagnostics for fast design cycles and platform differentiation, truly simplifying VRD design and enabling fastest time-to-market with its “set-and-forget” methodology.

• 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