| 摘要 |
A circuit and a method for operating an inductive load, for example a fuel injector, in which rapid response of the load can be realized and, at the same time, small electrical power loss. A functional isolation of the rapid current buildup at the beginning of an energizing phase and a subsequent setting of the load current is provided, wherein the supply to the load takes place during the first operating phase from a “boost voltage” and during the second operating phase from the comparatively lower second operating voltage. In the second operating phase, a desired load current is set by suitably switching the second operating voltage on an off at the load. This intermittent operation causes lower switching losses, which are yet further reduced by the second operating voltage being matched, i.e. not being fixedly predetermined but being changed if necessary on the basis of monitoring of the load current. |
