Power Design Tip 12: Maximize power efficiency (see PDF for details!)

MOS power IC full range

KKST patch plug-in active passive crystal oscillator hot sale 24.576000MHZ

description:

In "Power Design Tips 11", we discussed how to use the Taylor series to find sources of loss in a power supply. In this power supply design tip, we will discuss how to use the same number of stages to maximize the power efficiency of a particular load current.

The first thing to note is that the a1 term has no effect on the current when the efficiency is at its maximum. This is because it is related to loss, which in turn is proportional to the output current, such as the diode junction. Therefore, as the output current increases, the above loss and output power also increase, and there is no effect on efficiency. The second thing to note is that the best efficiency occurs at some point where the fixed loss and the conduction loss are equal. This means that you can get the best efficiency by controlling the components that set the a0 and a2 values. Still try to reduce the value of a1 and improve efficiency. The result of controlling this is the same for all load currents, so the best efficiency does not occur as with other items. The goal of item a1 is to minimize costs while controlling costs.

See the PDF for the full text!