Computer simulation of radiation-induced clock-perturbation in phase-locked loop with analog behavioral model

A PLL behavioral model for a single event caused by a radiation strike is proposed in this paper. This model describes the behaviors of the radiation-induced transients in the circuit blocks of the PLL. The simulation results when comparing our proposed model with a SPICE simulation showed that our proposed model is identical to that of SPICE, but our proposed model is about 2,500 times faster. Our behavioral model is used to investigate the minimization strategy of the recovery time from the single event. We found after conducting a large number of simulations that a system with a damping factor of around 1 is the optimal design for a given recovery time. We were able to reach this conclusion within a short period of time thanks to the high-speed behavioral simulation.