It can be done using a commonly used formula that contains the inductor current ripple. In the datasheets for most switching regulators and in most application notes and other explanatory texts, an inductor current ripple of 30% during nominal load operation is given as a recommendation. This ...
It is found in actual use that an increased inductance may better suppress current spike, reduce current ripple and decrease circuit loss. However, if a large inductance is maintained from a light load current to a rated current, costs for manufacturing an inductor will rise, and a volume of...
Based on the above formula, it can be shown that the Q is zero at the self-resonant frequency since the inductance is zero at this point. Impedance The impedance of an inductor is the total resistance to the flow of current, including the AC and DC component. The DC component of the ...
In order to analyze the inductor losses accurately, a numerical formula for the inductor current ripple is deduced based on a detailed analysis. Two inductors are fabricated using several ferrite cores and powder cores taking into consideration the inductor size, inductor losses, and temperature rise...
& Li, J. A low-current ripple and wide voltage-gain range bidirectional DC–DC converter with coupled inductor. IEEE Trans. Power Electron. 35(2), 1525–1535 (2019). Acknowledgements This work was partially supported by the National Natural Science Foundation of China(No: 52172327) and the ...
These inductors have more eddy current & also harmonic current rating. Applications/Uses The applications of iron core inductors include the following. These inductors are used in filter circuits to stabilize the ripple voltage. It is extremely useful within AF applications & industrial power supplies...
This formula will help you in calculating the value of Inductor in Henry, it gives a rough figure, but it should work fine for your application. Here Vi is the Input Voltage, Vo is the Output Voltage <io> is the average current through your load and DT is the switching frequency of yo...
Now for a 30% current ripple through the inductor, the deltaI = 0.3 * 3.75A = 1.125A. The duty cycle is calculated as k = Uout / (Uin+Uout) for a boost converter in CCM, co we have the above mentioned 80%. Using the stadard U = L * di/dt formula, we can calculate the ...
Inductor ripple current: ΔIL = VIN_min ´ D fSW ´ L 3. Maximum output current: IOUT_max = æçè ILIM_min + DIL 2 ö ÷ø ´ (1 - D) 4. Peak switch current of the application: ISWPEAK = IOUT 1-D + DIL 2 η = Estimated boost converter efficiency (use the ...
Boost Converter Solution / ALPS 1 Introduction Traditionally, the inductor value of a boost converter is selected through the inductor current ripple. The average input current IL(DC_MAX) of the inductor is calculated using Equation 1. Then the inductance can be calculated using Equation 2. It ...