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Inductor Calculation for Buck Converter IC. This application note covers the steps required in choosing the inductor and to calculate the value used in buck regulator IC circuits. Buck (Step-Down) Converter Switching regulators are used in a variety of applications to provide stable and efficient power conversion.
The converter itself consists of one active switch controlled by an IC, a rectifier and filter elements. This great simplicity allows for cost effective high efficient power
By paying attention to the various parameters of the inductor specification sheet and select-ing the right value, a buck converter can operate at optimum efficiency and improve the overall reliability of a design. Figure 2. The XAL7070 series inductor used in a buck converter operating at 500 kHz. 1.8.
Introduction. The first part shows how the designer should estimate his requirements, specifically the required inductance. The next part takes an off-the-shelf inductor and shows how to interpret the specs provided by the vendor in greater detail. A step-by-step procedure is provided.
This article laid out the steps for calculating the inductance required for a buck converter, which includes calculating for duty cycle, turn-on time, ∆IL, L, and IPK. By determining the correct inductance, system efficiency, ∆VOUT, and loop stability can also be optimized.
The formula for calculating the series total inductance is the same form as for calculating series resistances: When inductors are connected in parallel, the total inductance is less than any one of the parallel inductors’ inductances. Again, remember that the definitive measure of inductance is the amount of voltage dropped across an ...
This application note gives the equations to calculate the power stage of a boost converter built with an IC with integrated switch and operating in continuous conduction mode. It is not intended to give details on the functionality of a boost converter (see Reference 1) or how to compensate a converter.
