US 12,218,656 B2
Driving apparatus and driving method
Masashi Akahane, Matsumoto (JP)
Assigned to FUJI ELECTRIC CO., LTD., Kanagawa (JP)
Filed by FUJI ELECTRIC CO., LTD., Kawasaki (JP)
Filed on Feb. 21, 2023, as Appl. No. 18/172,254.
Claims priority of application No. 2022-064949 (JP), filed on Apr. 11, 2022.
Prior Publication US 2023/0327659 A1, Oct. 12, 2023
Int. Cl. H03K 17/14 (2006.01); H03F 3/45 (2006.01); H03K 17/08 (2006.01); H03K 17/081 (2006.01); H03K 17/567 (2006.01)
CPC H03K 17/145 (2013.01) [H03F 3/45273 (2013.01); H03K 17/08104 (2013.01); H03K 17/567 (2013.01); H03K 2017/0806 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A driving apparatus comprising:
a temperature detection circuit configured to output a temperature detection signal corresponding to a temperature of a switching device;
a current detection circuit configured to sample, at a timing during an ON period of the switching device, a current detection signal corresponding to a main current that flows in the switching device; and
a driving circuit configured to set a magnitude of a driving current to be supplied to a control terminal of the switching device to a magnitude associated with a first temperature range irrespective of a value of the current detection signal, and to adjust a magnitude of the driving current according to the value of the current detection signal.