SLUSF25 September 2025 UCC27834
PRODMIX
The level shift circuit (refer to the functional block diagram in Figure 6-1) is the interface from the low-voltage input stage to the high-side driver stage which is referenced to the switch node (HS). The level shift allows control of the HO output referenced to the HS pin and provides excellent delay matching with the low-side driver. The delay matching of the UCC278X4 is summarized in Figure 5-5 and Figure 5-4.