SQUIB CIRCUIT LOW SIDE BATTERY SHORT PROTECTION

• Main Authors: PATEL BANKIM, COLAROSSI VINCENT
• Format: Patent
• Language: Chinese; English
• Published: 26.06.2020
• Subjects: PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

The invention relates to a squib driver circuit for deployment of an active safety restraint in a vehicle. The squib driver circuit may include a low side protection circuit. The low side protection circuit may include a comparator circuit to compare a voltage at a low side return terminal to a reference voltage and activate a timer in response to the voltage at the low side return terminal exceeding the reference voltage, the timer generating a disable signal to disable the low side driver after a predetermined period of time. The low side protection circuit may disable the low side driver after the short is detected and elapse of the predetermined period of time. The squib driver circuit may be formed on a single chip. The squib driver circuit may include both a high and low side driver.An input terminal for receiving an input voltage used to fire the active safety restraint. 本发明公开了一种用于在车辆中展开主动安全约束件的发火管驱动电路。该发火管驱动电路可包括低侧保护电路。该低侧保护电路包括比较器电路，该比较器电路用于将低侧返回端处的电压与基准电压进行比较，并且响应于该低侧返回端处的该电压超过该基准电压而激活定时器，该定时器生成禁用信号