Three-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers

   The ISL8103 is a three-phase PWM control IC with integrated MOSFET drivers. It provides a precision voltage regulation system for multiple applications including, but not limited to, high current low voltage point-of-load converters, embedded applications and other general purpose low voltage medium to high current applications.The integration of power MOSFET drivers into the controller IC marks a departure from the separate PWM controller and driver configuration of previous mulitphase product families. By reducing the number of external parts, this integration allows for a cost and space saving power management solution.

FEATUREs
• Integrated Mulitphase Power Conversion
   - 1, 2, or 3 Phase Operation
• Precision Output Voltage Regulation
      - W0.8% System Accuracy Over-Temperature
      (for REF = 0.6V and 0.9V)
   - ±0.5% System Accuracy Over-Temperature
      (for REF = 1.2V and 1.5V)
   - Usable for Output Voltages not Exceeding 2.3V
   - Adjustable Reference-Voltage Offset
• Precision Channel Current Sharing
   - Uses Loss-Less rDS(ON) Current Sampling
• Optional Load Line (Droop) Programming
   - Uses Loss-Less Inductor DCR Current Sampling
• Variable Gate-Drive Bias - 5V to 12V
• Internal or External Reference Voltage Setting
   - On-Chip Adjustable Fixed DAC Reference Voltage with
      2-bit Logic Input Selects from Four Fixed Reference
      Voltages (0.6V, 0.9V, 1.2V, 1.5V)
   - Reference can be Changed Dynamically
   - Can use an External Voltage Reference
• Overcurrent Protection
• Multi-tiered Overvoltage Protection
   - OVP Pin to Drive Optional Crowbar Device
• Selectable Operation Frequency up to 1.5MHz per Phase
• Digital Soft-Start
• Capable of Start-up in a Pre-Biased Load
• Pb-Free (RoHS compliant)

APPLICATIONs
• High Current DDR/Chipset Core Voltage Regulators
• High Current, Low Voltage DC/DC Converters
• High Current, Low Voltage FPGA/ASIC DC/DC
   Converters