What is the function of a BOOST converter? A BOOST converter is a step-up switching regulator that increases a lower input voltage to a higher out...

The function of a BOOST converter is to increase a lower input voltage to a higher output voltage. It achieves this by utilizing a step-up switching regulator configuration. Here are some key points about the function of a BOOST converter:

• It operates with an inductor at the input, which helps absorb sudden voltage variations (spikes) from the power source and facilitates achieving the desired current waveform.
• The BOOST converter stores energy in an output capacitor, which operates at a higher voltage (Vo > E). This allows for the use of relatively small capacitance values.
• The waveform control is maintained for every instantaneous value of the input voltage, even when it reaches zero.
• In continuous conduction mode, the input current is not interrupted, which helps minimize the requirements for an EMI filter.
• The transistor used in the BOOST converter must be able to withstand a voltage equal to the output voltage. Its activation is relatively simple, as it can be done by a low voltage signal referenced to ground.

In summary, a BOOST converter is used to step up and regulate voltage, making it useful in various applications where a higher output voltage is required than the available input voltage.