| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a current limiting device capable of stably executing overload driving, with a simple configuration, without rasing a current output up to a use limit for current output blocking. <P>SOLUTION: An ECU sets a cooling time for cooling an output element heated under execution of overload driving, by decreasing an upper limit value Ilim of current limitation to a first value I1 corresponding to a rated current value from a second value I2 corresponding to the limit conduction value for a predetermined time Tx after execution of the overload driving. The ECU measures a continuation time t of overload driving. Based on the continuation time t, it calculates the time period for the cooling time, i.e., the predetermined time Tx. <P>COPYRIGHT: (C)2010,JPO&INPIT |
