A dead-time generator based on OPA slew rate for consumer electronic applications

Using H-bridge as a driving device is popular and important in many consumer electronic applications, such as robots, DC/DC converters, D-class audio amplifiers and so on. Furthermore, the existence of dead time is necessary for the H-bridge driver to avoid the occurrence of shoot-through current. In this paper, based on the concept of OPA slew rate, a new dead-time generation is proposed to achieve more precise dead time compared with the conventional dead-time generators.