Page 20 - PEN eBook October2023
P. 20
TEST & MEASUREMENT
Power Electronics
Simulation Accelerates
SMPS Development
By Stefano Lovati, contributing writer for Power Electronics News
In power-conversion circuits, such as converters, inverters and switching power supplies, the
operating frequency has increased considerably, thanks in part to the introduction of wide-bandgap
components like silicon carbide and gallium nitride.
While this allows for signals with very short rise and fall times and consequent improvement in
efficiency, it has also increased the effect of printed-circuit–board (PCB) parasitics brought about
by the high di/dt value. The number of devices on a PCB has also increased in density due to
advancements in semiconductor technology. This rise in density and decreased available space has
made parasitics more important when designing PCBs. Inductive, capacitive or resistive parasitics
are all possible.
30 OCTOBER 2023 | www.powerelectronicsnews.com
