Driving system for driving switching element

摘要

In a driving system, an applying module applies, in response to an input of an on or off command as a switching command, a switch signal to a target switching element as a high- or low-side switching element to switch the target switching element to be an on or off state. A measuring module measures a delay period defined as a time interval from a first time to a second time. The first time represents a time at which the switching command is switched from one of the on command and the off command to the other. The second time represents a time at which the target switching element is actually switched to be the on or off state. An adjusting module adjusts, based on the delay period, an input timing of a next switch signal applied from the applying module to the target switching element.

主权项

1. A driving system for driving series-connected high- and low-side switching elements of a power converter to alternately turn on the series-connected high- and low-side switching elements with a dead time between on states of the respective high- and low-side switching elements, the driving system comprising:
an applying module configured to apply, in response to an input of one of an on command and an off command as a switching command, a switch signal to a target switching element as one of the high- and low-side switching elements to switch the target switching element to be in one of an on state and an off state corresponding to the switching command; a measuring module configured to measure a delay period defined as a time interval from a first time to a second time, the first time representing a time at which the switching command is switched from one of the on command and the off command to the other thereof, the second time representing a time at which the target switching element is actually switched to be in one of the on state and off state corresponding to the switching command; an adjusting module configured to adjust, as a function Of the delay period, an input timing of a next switch signal applied from the applying module to the target switching element; a first circuit region; a second circuit region electrically isolated from the first circuit region; a drive-signal generator provided in the first circuit region and configured to generate the switching command and output the switching command; and a transferring module configured to transfer the switching command output from the drive-signal generator to the second circuit region while establishing electrical isolation between the first and second circuit regions, the applying module being provided in the second circuit region and configured to apply, based on the switching command transferred from the transferring module, the switch signal to the target switching element to switch the target switching element to be in one of the on state and off state corresponding to the switching command, the measuring module being provided in the second circuit region and configured to measure the delay period defined as the time interval from the first time to the second time, the adjusting module being configured to adjust, as the function of the delay period, the input timing of the next switch signal to the target switching element to a predetermined reference timing.