How to calculate minimum inductance for buck converter?
Calculating Minimum Inductance: Inductor current ripple is defined as the peak to peak change in current during the on and off time. For the synchronous buck converter, the change in inductor current during the high side MOSFET Q1 on time is equal to the change during the MOSFET’s off time.
What is the power stage of a buck converter?
As shown in Figure 1, the synchronous buck converter is comprised of two power MOSFETs, an output inductor, and input and output capacitors. Figure 1.
What is the purpose of a synchronous buck converter?
The synchronous buck converter is used to step a voltage down from a higher level to a lower level. This application note describes how to determine the buck inductor and input and output capacitors. Good design can improve performance and help to meet customer requirements.
What is the output of a synchronous buck converter?
The output of the synchronous buck converter consists of an inductor and capacitor. The output stage stores and delivers energy to the load and produces a constant output voltage. Inductors are manufactured in various materials and with a wide range of values, typically having a tolerance of ±20%.
How to calculate power stage of buck converter?
Synchronous buck converters are very popular in industry today and provide high efficiency solutions for a wide range of applications. This application note gives the formulas to calculate the power stage of a synchronous buck operating in continuous conduction mode.
When did the buck converter design 12 come out?
Buck Converter Design 12 Design Note DN 2013-01 V0.1 January 2013 allows for higher switching frequency to balance the losses. If that is reasonable depends on the entire converter stage and efficiency targets. However, the calculations have been done only for 33.3 A output current.