Title:
SOCチップに基づく電磁誘導炉回路
Document Type and Number:
Japanese Patent JP5102394
Kind Code:
B2
Abstract:
An electromagnetic oven circuit based on SoC chip includes a power inversion circuit and a CHK-S008 type SoC chip. A CPU, comparators, an operational amplifier, an A/D converter, and an IGBT drive control module are integrated into this chip. The circuit further includes a feedback excitation IGBT driver including the IGBT drive control module, the comparator, an external driver, and an external feedback circuit connected between the output of the IGBT drive control module and the in-phase input terminal of the comparator, the output of the comparator is connected to the feedback terminal of the IGBT drive control module, the external driver is connected between the output of the drive control module and the input of the power inversion circuit for driving the power inversion circuit to work. The external feedback circuit feeds back the pulse signal into the chip to modify the IGBT drive waveform and optimize the pulse signal waveform, which improves the work efficiency; at the same time, an excitation effect may be generated in the case of a weak synchronization signal by the external feedback circuit, preventing the synchronization signal from failing when the commercial power is low.
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Inventors:
Okamori
Student
Liu Harumitsu
Lee Peng
Chen Chun
Student
Liu Harumitsu
Lee Peng
Chen Chun
Application Number:
JP2011513850A
Publication Date:
December 19, 2012
Filing Date:
December 04, 2009
Export Citation:
Assignee:
Shenzhen Municipal Technology Co., Ltd.
International Classes:
H02M7/48; H05B6/06; H05B6/22
Domestic Patent References:
| JP200729593A | ||||
| JP5217666A | ||||
| JP5343176A |
Attorney, Agent or Firm:
Hirofumi Mimata