PX3540

Graphics Processor Digital Multiphase Controller Product Brief PX3540 Applications Description Graphics Processors Intelligent Point-of-Load (POL) power regulation Features Multiphase power conversion 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 programmable loadline and loop compensation Digital temperature sensor compensation Active Transient Response (ATR) enables meeting transient requirements with reduced output capacitance I2C-bus interface for monitoring, control and configuration Internal non-volatile memory (NVM) to store custom configurations Extensive fault detection capability − Input Under-voltage − Output Under-/Over-voltage − Per Phase and Total Output Current − Current balance − Auxiliary 12V supply (both fault and return reported) RoHS compliant 48-lead MLF plastic package Ordering & Packaging Part Number The PX3540 Graphics Processor Digital Multiphase Controller provides core power for today’s high current graphic processors by driving up to six synch...