Adaptive Dead-Time Control for Power Switch Timing

The patent implements feedback by monitoring the actual switch node voltage and comparing it with expected values. The system measures the timing of voltage transitions and uses this feedback information to dynamically adjust the drive signals to switches, ensuring they do not conduct simultaneously while minimizing dead-time. This closed-loop control approach resolves the contradiction by providing reliable switch timing control through real-time monitoring and adjustment.

The patent replaces conventional mechanical or simple timing-based control mechanisms with an electronic measurement and control system. By using voltage monitoring circuits, timing measurement circuits, and electronic delay adjustment, the system achieves precise switch timing control without relying on fixed mechanical timing mechanisms. This substitution enables dynamic adaptation to varying operating conditions while maintaining control reliability.

The patent applies dynamics by making the timing control adaptive rather than fixed. The system continuously monitors switch node voltage and adjusts the timing of drive signals dynamically based on actual operating conditions. This dynamic control optimizes the switching transitions, minimizes body-diode conduction periods, and reduces power dissipation by precisely controlling when switches transition states, rather than using predetermined fixed timing intervals.

The patent changes the timing parameters of drive signals dynamically based on monitored voltage transitions. By measuring actual switch node voltage rise and fall times, the system adjusts delay times and switching moments to optimize performance. This parameter adjustment reduces energy losses from body-diode conduction and improves overall efficiency while adapting to varying load and operating conditions.