In automotive applications, especially the emerging electric vehicle (EV) market, the DC-DC converter circuit requires great consideration for efficiency and robustness. Within the OBCs, the main focus for the 120V half-bridge drivers is in the high voltage to low voltage portion. Figure 1 shows an example where the HVLV DC-DC stage and the 48V to 12V converter stage utilize 120V half-bridge gate drivers

When looking at OBC DC-DC converters, the high voltage (400V or 48V) to low voltage (48V or 12V) portion of the system requires the usage of a full bridge or two half-bridge circuits and drivers. These 48V and 12V half-bridge circuits are often bidirectional and multiphase for managing large loads with high power output and high efficiency requirements. ITo achieve the high efficiency, reliable performance, and robustness required for this application, the UCC27301A-Q1 can be used due to the high drive current leading to fast switching capabilities and reliable performance and ability to perform in multiphase systems. Figure 2-2 shows an example of a high voltage (400V or 800V) to low voltage (48V or 12V) DC-DC converter where two UCC27301A devices can be utilized on the low voltage side.