IR3536AMTRPBF Description

Dual-loop digital multi-phase buck controllers, the IR3536A and IR3538A. The IR3536A and IR3538A drive up to 6 and 8 phases, respectively. The IR3536A and IR3538A have a Vtt tracking capability for DDR memory and are completely Intel? VR12 and AMD? SVI/PVI compliant on both loops. In order to achieve great efficiency at the lowest possible cost across the whole load range, the IR3536A and IR3538A both contain IR Efficiency Shaping Technology. The MOSFET gate drive voltage is optimized using IRVariable Gate Drive based on the current load in real-time. According to the load current, IRDynamic Phase Control adds or drops phases. The 1-phase operation and active diode emulation modes of the IR3536A and IR3538A can be programmed to be entered automatically or by command.

IR3536AMTRPBF Features

• Auto-Phase Detection with auto-compensation

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

• Phases are flexibly assigned between Loops 1 & 2?

• Overclocking & Gaming Mode with Vmax setting??

• Compatible with IRATL and 3.3V Tri-state Drivers ?

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

• Non-Volatile Memory (NVM) for custom configuration

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

• Switching frequency from 200kHz to 1.2MHz per phase

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

• Pb-Free, RoHS, 7x7 48-pin & 8x8 56-pin QFN, MSL2package

• IREfficiency 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?

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

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

IR3536AMTRPBF Applications

• DDR Memory with Vtt tracking?

• Overclocked & Gaming platforms

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