GPU Power PX3544

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The PX3544 Graphics Processor Digital Multiphase Controller provides core power for today high current graphic processors by driving up to four synchronousrectified buck-converter channels in parallel. Interleaved timing of the channels results in a higher ripple frequency, reducing input and output ripple. With up to four phases, each capable of up to 2 MHz operation, the PX3544 can be used to build DC-DC converters that provide up to 130A with excellent efficiency, low ripple, and the lowest component count.

		Applications
		- Graphics Processors -Intelligent Point-of-Load (POL) power regulation
		Features
		-Multiphase power conversion 1-4 phases -Intelligent Point-of-Load (POL) power regulation -100 kHz to 2 MHz switching frequency -Internal high precision voltage reference ??2.4mV 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 -Differential voltage sense -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 with two user configurable output fault pins -Configurable latched fault or autonomous recovery shutdown -Single +3.3V supply operation -RoHS compliant 48-lead MLF plastic package

For access to Data Sheet and Application Notes, please log on to http://www.primarion.com/PrimarionMain/Documents/PDB-3544.pdf