Fig. 16From: Characterization of analog and digital control loops for bidirectional buck–boost converter using PID/PIDN algorithmsa–c Analog domain pole-zero plot of BBC in buck mode in open loop (a), closed loop with PID (b) and PIDN (c). d Digital domain pole-zero plot (Z-plane) of BBC in buck mode in open loop and closed loop with PID and PIDNBack to article page