Power factor corrector realized in an intelligent embedded way and control method thereof
A technology of power factor correction and control method, which is applied in the direction of control/regulation system, output power conversion device, DC power input conversion to DC power output, etc., and can solve problems such as large number of components, single function, complex circuit structure, etc. , to simplify the circuit structure, simplify the processing process, and realize the effect of over-current protection
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[0025] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0026] see image 3 According to the concept of this case and the implementation examples based on the BOOST step-up converter, it mainly includes AC mains input, full-wave rectifier bridge BD, overcurrent protection circuit, dual voltage limit control circuit, inductor L, power switch tube Q, diode D, capacitor C, load resistor R and PFC processor. The live line L of the mains is connected to the AC input terminal AC+ of the rectifier bridge BD; the neutral line N of the mains is connected to the AC- terminal of the rectifier circuit; one end of the inductor L is connected to the DC input terminal DC+ of the rectifier bridge BD, and the other end is connected to the power The drain of the switch tube Q is connected to the anode of the diode D; the source of the switch tube Q is connected to one end of the overcurrent protection circuit, and the gate of the swit...
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