Dynamic Line Termination Circuit for Voltage Overshoot Damping

The patent applies dynamics by transitioning from a static resistive termination to a dynamic switching mechanism. Switching transistors are controlled by delay elements to activate current sinking only during specific time windows after signal transitions. This temporal dynamics allows the circuit to provide overshoot damping transiently rather than continuously, significantly reducing average current consumption while maintaining reliability.

The patent implements periodic action through delay elements that trigger switching transistors at specific intervals after signal edges. The switching transistors operate in periodic pulses synchronized with signal transitions, creating time-dependent current sinking behavior. This periodic activation provides damping when needed (during transitions) while remaining inactive during steady states, resolving the contradiction between overshoot protection and current consumption.

The patent uses dynamic switching controlled by delay elements to activate termination current only during critical transition periods. The switching transistors are timed to conduct precisely when signal edges occur, providing overshoot control dynamically rather than statically. This reduces the impact on clock jitter by limiting current draw to minimal necessary durations, preserving timing integrity while maintaining voltage control.

The patent applies partial action by providing termination current only for the minimum necessary duration to control overshoot, rather than continuous current. The delay elements and switching transistors create a timed window of current sinking that is sufficient to dampen voltage excursions but limited enough to avoid excessive loading that would degrade clock timing and increase jitter.

The patent implements periodic action where switching transistors are activated in synchronized pulses with signal transitions. The delay elements generate timed control signals that turn on switching transistors only during transition events, creating periodic current sinking behavior. This reduces power consumption by eliminating continuous current draw, as the switching transistors remain off during steady states and only activate transiently when needed for overshoot damping.

The patent applies dynamics by transitioning from static continuous current termination to dynamic transient current sinking. The switching transistors, controlled by delay elements, create time-varying termination behavior that adapts to signal transitions. This dynamic approach maintains voltage overshoot damping during critical moments while minimizing power consumption during stable periods, resolving the contradiction between reliability and energy loss.