| 摘要 |
A fail-safe system in a power regulation circuit for an automotive electronic circuit such as electronic anti-skid brake control system, which fail-safe system can perform fail-safe operation even when the power regulation circuit is damaged and thereby the supply voltage from the power regulation circuit varies significantly. The fail-safe system in a power regulation circuit includes a monitor power supply circuit independently of the power regulation circuit. The monitor power supply circuit is adapted to produce a reference signal to be compared with the output of the power regulation circuit in a fail-safe circuit. The fail-safe circuit produces an error signal when the output signal value drops below a given threshold defined by the reference signal value to activate an alarm signal generator and disconnect an actuator controlled by the control system in order to prevent the actuator from malfunctioning due to errors in the control system. |
