Comparative Assessment of Gate Drive Control Schemes in High Frequency Converter

Several gate drive control schemes are simulated and
the results show that the Fixed Duty ratio (FDR) can help drive
synchronous rectifier buck converter (SRBC) correctly with low
dead time and hence reduce body diode conduction loss. Even
though FDR is prone to cross-conduction effects, the design is
simple. Apart from that, Adaptive Gate Delay (AGD) and
Predictive Gate Delay (PGD) control schemes have also shown
high level of efficiency. However, AGD generates more losses.
This makes PGD preferable in achieving a highly efficient
converter of more than 82 % in spite of the advantage in FDR
and AGD schemes.