Motor driving device

• Main Authors: KAWANISHI TORU, ISHII TAKUYA, TAKAHASHI MASAHIRO, FUKUDA DAISUKE
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2024
• 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; BASIC ELECTRONIC CIRCUITRY; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PULSE TECHNIQUE

The motor drive device (10) includes: a series circuit of a Zener diode (104) and a detection resistor (105) connected between a gate terminal of a first high-side transistor (11) and ground; a comparator (106) that compares the voltage of the detection resistor (105) with a reference voltage (Vr); a first drive transistor (102) that short-circuits the gate-source terminal of the first high-side transistor (11) in accordance with the detection signal output by the comparator (106); a control circuit (5); and an OR circuit (108) that turns the first drive transistor (102) on regardless of a drive signal from the control circuit (5). As a result, when the power supply voltage (Vc) rises and the gate terminal of the first high-side transistor (11) becomes equal to or greater than a predetermined voltage, the first high-side transistor (11) is turned on, thereby suppressing the rise of the power supply voltage (Vc). 马达驱动装置(10)具备：齐纳二极管(104)与检测电阻(105)的串联电路，连接在第一高侧晶体管(11)的栅极端子与地之间；比较器(106)，将检测电阻(105)的电压与基准电压Vr进行比较；第