Patent ID: 9012821
Filing Date: 2015-04-21
Classification: H05B

Abstract:
1. A digital control type power converter for cooking utensils, comprising a rectifier, a filter, a power inverting circuit and a control unit, wherein: the power inverting circuit comprises an IGBT and an LC resonant circuit consisting of an inductive load and a capacitor connected in parallel with the inductive load, the LC resonant circuit is connected between the positive end of the rectifier and the source of the IGBT, and the drain of the IGBT is grounded; the control unit is a SoC chip which is internally integrated with a Micro Processing Unit (MPU), an Analog-to-Digital Converter (ADC), a Programmable Pulse Generator (PPG), a communication interface, an amplifier, first to fourth comparators, a first trigger, a second trigger, a counter and two AND gates; wherein the ADC and the communication interface are respectively connected with the corresponding input ends of the MPU; the pulse width data output end of the MPU is connected with the preset input end of the PPG, one output of the MPU is connected with the PPG through the first AND gate, and the pulse signal output by the PPG is transmitted to the IGBT through the second AND gate; the digital control type power converter for cooking utensils further comprises: