Control circuit, control chip and air conditioning system

• Main Authors: LI XUELIANG, LIANG HONGQI, ZHAO XIFENG, JIANG XIANGUO
• Format: Patent
• Language: Chinese; English
• Published: 07.07.2020
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The invention discloses a control circuit, a control chip and an air conditioning system. The control circuit comprises a signal driving sub-circuit, a first switch, a second switch and a dead zone insertion sub-circuit. The input end of the signal driving sub-circuit is used for receiving PWM signals. The signal driving sub-circuit is used for correspondingly outputting signals at the first output end and the second output end, specifically, the phases of the signals are same or opposite to the phases of the received signals. A first control port of the first switch is electrically connectedwith the first output end. A first control port of the second switch is electrically connected with the second output end. The dead zone insertion sub-circuit is electrically connected with a second control port of the first switch and a second control port of the second switch. According to the control circuit, the PWM signals are divided into two paths with the opposite phases by the signal driving sub-circuit, and ther