Boost converter (boost)

Boost converter (boost)

The boost converter (boost) is the only option when the input voltage needs to be converted to a higher output voltage.

The boost converter uses the internal MOSFET to charge the voltage to achieve the purpose of the boost output and, when the MOSFET is off, discharges the inductor through a load rectification.

The conversion process between the inductor charge and the discharge will reverse the direction of the voltage passing through the inductor, thus gradually lifting the voltage higher than the input voltage. The switching duty cycle of the MOSFET determines the boost ratio, while the feedback loop controls the duty cycle to maintain a stable output voltage. The output capacitor acts as a buffering role to reduce the output voltage ripple.

The rated current of the MOSFET and the boost ratio of the boost converter determine the maximum load current of the boost converter, and the rated voltage of the MOSFET determines its output voltage limit. Some boost converters combine the rectifier with the MOSFET to provide synchronous rectification.

Boost converter (boost)