Synchronous Buck Converter Schematic. Figure 1 the synchronous buck converter is comprised of two power mosfets an output inductor and an output capacitor. A synchronous buck converter is a modified version of the basic buck converter circuit topology in which the diode d is replaced by a second switch s 2.
The figure shown is an idealized version of a buck converter topology and two basic modes of operation. In pwm pulse width modulation the overall switch time t is kept constant while the turn on time t on of the switch is varied in contrast the switching period time t is varied while the turn on time t on of the switch is kept constant in pfm pulse frequency modulation. This modification is a tradeoff between increased cost and improved efficiency.
This specific buck topology derives its name from the control method of the two power mosfets.
One common application is a point of load pol converter that transforms a system bus voltage of. This modification is a tradeoff between increased cost and improved efficiency. The figure shown is an idealized version of a buck converter topology and two basic modes of operation. One common application is a point of load pol converter that transforms a system bus voltage of.
