| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect an anomaly in a current flowing to a load. <P>SOLUTION: A pair of anti-phase or in-phase PWM signals are applied across a load 30 to drive the load. An anomaly detection circuit 40 detects the states of changes in the pair of PWM signals (PWM+, PWM-) and starts counting when at least either PWM signal stops changing, and outputs an anomaly detection signal if the count value reaches a predetermined value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
