Fig. 11From: Characterization of analog and digital control loops for bidirectional buck–boost converter using PID/PIDN algorithmsMixed domain frequency response of BBC in boost mode in open loop and closed loop with PID and PIDN. a–c Analog domain—pole-zero plot of BBC in boost mode in open loop (a), closed loop with PID (b) and PIDN (c, d). Digital domain pole-zero plot (Z-plane) of BBC in boost mode in open loop and closed loop with PID and PIDNBack to article page