Designing and Measuring 100uOhm Power Rails
(Room Ballroom H)
18 Oct 18
3:20 PM
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3:50 PM
There are many challenges related to 100uOhm power rail design. The VRM options are very limited, the measurements are challenging even the best instruments and everything matters. Simulation and measurement comparisons become much more difficult and the number of decoupling capacitors increases exponentially. With operating currents approaching 750 Amps, load testers present yet another new challenge. The switching power supply ripple is a much larger percentage of the noise budget, and this makes achieving a reasonable signal to noise ratio interesting to say the least. In this presentation I'll discuss the many challenges associated with this "new normal" for high power rails and I'll provide a few tips for success.