种用于BOOST-PFC的延时软启动电路

• Format: Patent
• Language: Chinese
• Published: 24.04.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明涉及种用于BOOST-PFC的延时软启动电路，在背景技术的基础上增加了驱动延时电路和开关机控制端，在继电器闭合并延时之后开始驱动，实现BOOST-PFC的正常输出，关机后关闭软启动继电器和芯片的驱动。使继电器闭合后延时定的时候才使控制芯片出驱动，软启动电阻不会过热。 The invention relates to a delay soft start circuit used for a BOOST-PFC. On the basis of the background technology, a drive delay circuit and a startup and shutdown control end are additionally arranged, a relay is closed and delayed and then starts to drive, normal output of the BOOST-PFC is achieved, and after the BOOST-PFC shuts down, drive of the soft start relay and a chip is stopped. The relay is closed, then the chip is controlled to drive after a certain time delay, and a soft start resistor is not overheated.