Maxim step-down controller powers NVIDIA GPUs
A Maxim Integrated Products product story
Edited by the Electronicstalk editorial team Sep 18, 2009
Maxim Integrated Products has introduced the MAX17409, a single-phase step-down controller for powering NVIDIA GPUs.
Its active voltage positioning dynamically lowers the output voltage in response to the load current, reducing output capacitance requirements and power dissipation.
The load current is sensed at the MAX17409's output to minimise noise sensitivity using a current-sense resistor or the DC resistance of the inductor.
The MAX17409 is suited for NVIDIA GPU core supplies, notebooks/desktops/servers, or as a general voltage-positioned, step-down converter.
The switching frequency is adjustable from 200 to 600kHz, allowing designers to optimise for efficiency or component cost/size.
This device also features overvoltage, undervoltage, and thermal-fault protection circuitry.
The MAX17409 is available in a 4 x 4mm, 28-pin TQFN package with an exposed backside pad.
It is fully specified over the -40 to 105C temperature range.
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