Control circuit for DC/DC converters

The goal of this paper is to propose and describe a control circuit to drive DC/DC converters. This circuit is applicable to many classic PWM topologies, QRC, MRC and resonant converters, and also to some variants of these classic topologies. The circuit proposed has been made with surface mounting techniques (SMD) and allows control of topologies of one or two transistors, working at constant frequency (PWM) or variable frequency (constant on-time or off-time). Furthermore, it allows generation of two driving signals shifted 180°, applicable to typical topologies such as push-pull, half-bridge or full-bridge, as well as to generate complementary signals with adjustable delays, for topologies with demagnetization network, or half-bridge or full-bridge converters with complementary control