Due to the high conduction loss associated with a diode bridge rectifier at the input, conventional power factor correction circuits in electric car battery chargers have an efficiency limitation. Some EV, computer and other power supply boxes have a feature called PFC that lowers the quantity of reactive power produced by a computer.
The magnetic field is energised by reactive power, which works at a right angle to true power. Reactive power has no actual value for an electronic device, but electric companies charge for both true and reactive power, which results in unnecessary costs.
Power supplies must have PFC as a characteristic. The power factor in power factor correction is calculated as true power split by reactive power. The power factor ranges from 0.0 to 1.00. The device is effectively using electricity if the power factor is greater than 0.8.
A power supply without PFC has a power factor of 0.95-0.99, while a normal power supply has a power factor of 0.70-0.75.PFC is not only used for computer power sources. In other sectors, PFC equipment is used to lower the reactive power generated by arc furnaces, high bay lighting, induction welders, and machinery that uses electrical motors.
The Global EV PFC controller market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
With integrated high-voltage power MOSFETs, Power Integrations has launched the EV PFS family of power factor correction controllers. According to PI, HiperPFS devices employ a control strategy that maximises efficiency under light load conditions.
They are offered in a small, low-profile eSIP package and are suitable for PFC applications ranging from 75 W to 1 kW. High power factor is required by regulatory for many electronic vehicles with power requirements over 75 W and for lighting products over 5 W.
Along with numerous application-specific standards, these regulations call for high power supply efficiency throughout the entire load spectrum, from 100% load to as little as 10% load. By maintaining a low average switching frequency and varying the switching frequency to block electromagnetic interference, the company’s cutting-edge variable-frequency continuous conduction mode of operation reduces switching losses.
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