Circuit arrangement
AssigneeRobert Bosch GmbH
InventorsTobias Richter, Stefan Butzmann, Stefan Aldinger
Life of this patent
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Abstract
The invention relates to a circuit arrangement (1), in particular for controlling an electric machine, comprising at least one high-voltage semiconductor bridge circuit (2) that includes a low-side semiconductor switch (4) and a high-side semiconductor switch (3). A high-side gate driver (5) is assigned to the high-side semiconductor switch (3), and a low-side gate driver (6) is assigned to the low-side semiconductor switch (4). According to the invention, a high-side flyback converter (8) is connected upstream of the high-side gate driver, and a low-side flyback converter (9) is connected upstream of the low-side gate driver (6), at least one of the flyback converters (7, 8, 9) being designed as a high-voltage flyback converter.
Claims8
A circuit arrangement (1) comprising a high-voltage semiconductor bridge circuit (2) having a low-side semiconductor switch (4), a high-side semiconductor switch (3), and a logic unit (7), wherein a high-side gate driver (5) is assigned to the high-side semiconductor switch (3) and a low-side gate driver (6) is assigned to the low-side semiconductor switch (4), characterized in that a high-side flyback converter (8) is connected upstream of the high-side gate driver and a low-side flyback converter (9) is connected upstream of the low-side gate driver (6), and the logic unit (7) is connected to at least one of the flyback converters (8, 9), wherein at least one of the flyback converters (7, 8, 9) is a high-voltage flyback converter;
- and wherein a supply voltage for the logic unit (7) comes from at least one of the connected flyback converters (8, 9).
Dependencies are inferred from the claim text.