I am working on a circuit, part of which looks like this:
Signal SW is switching the MOSFET on and off such that the nodes ac+ and ac- are shorted (modulated). When SW is high to turn on the MOSFET the waveform looks like this: 
(MOSFET turns on at around 1.2020 ms), which is as expected. Signal V (ac+, ac-) is modulated from that particular moment.
The problem is when SW is going low to turn off the MOSFET. The waveform looks something like this:
The MOSFET is turned off after 1.2060 ms. There is a dip (negative transient peak) in signal V(v_rect), which is lower than 0V when V(sw) goes low. Is this due to the gate-drain capacitance (Miller cap) and the SW signal being fed forward to node V_rect? This same transient peak can be seen during the turning ON of the switch.
