5 UCC21520 Driving Different Power Topologies

The flexible, universal capability of the UCC21520 with up to 18-V VCCI and 25-V VDDA/VDDB allows the device to be used as a low-side, high-side, high-side/low-side or half-bridge driver with MOSFETs, IGBTs or SiC MOSFETs. Here are some topology examples where the UCC21520 can fit very well. Synchronous buck or boost is shown in Figure 18 and Figure 19; full bridge isolated converter is shown in Figure 20; Motor drives application is shown in Figure 21.

Figure 18. UCC21520 Used in Synchronous Buck

Figure 19. UCC21520 Used in Synchronous Boost

Figure 20. UCC21520 Used in Full-Bridge Isolated Converter

Figure 21. UCC21520 Used in Motor Drives