PX3544 - Primarion

PX3544 4-phase Graphics Processor Digital Multiphase Controller

4-phase Graphics Processor Digital Multiphase Controller Product Brief PX3544 Applications • Graphics Processors • Intelligent Point-of-Load (POL) power regulation Features • Multiphase power conversion – 1- to 4-phase operation • 100 kHz to 2 MHz switching frequency • Internal high precision voltage reference – ±12.4mV voltage setpoint accuracy • Startup .

Features

• Multiphase power conversion
  – 1- to 4-phase operation
• 100 kHz to 2 MHz switching frequency
• Internal high precision voltage reference
  – ±12.4mV voltage setpoint accuracy
• Startup and maximum voltages set through external resistor
• 2-bit VID input for additional voltage control
• Driver detect prior to soft-start disables unpopulated phases
• Autonomous or user controlled phase dropping based on current balance and 12V supply faults
• Supports up to three 12V supplies with phase mapping
• Precise digital current balancing with programmable offsets for thermal balancing
• Digitally progra.