A shoot-through prevention circuit is used in a power conversion circuit
that uses a passive level-shifter to drive a P-type transistor in a
switching network. The shoot-through prevention circuit is coupled
between a controller output that provides a driving signal to control the
P-type transistor and the passive level-shifter coupled to a control
terminal of the P-type transistor. The shoot-through prevention circuit
couples the controller output to the passive level-shifter when the
driving signal has a first logic level associated with turning on the
P-type transistor and isolates the controller output from the passive
level-shifter when the driving signal has a second logic level associated
with turning off the P-type transistor.