Method for actuating a first and a second switch element of a half-bridge in a current converter, and current converter having a half-bridge

A current converter (100) comprising a half-bridge (110) having a first (120) and a second (140) switch element,

• wherein the current converter (100) comprises an input connector (102) for connecting a DC voltage source (104), an output connector (106) for connecting a load (108) in parallel with the second switch element (140) of the half-bridge (110), a first gate driver (122) for actuating the first switch element (120), and a second gate driver (142) for actuating the second switch element (140),
• wherein an actuation comprises maintaining a switching status and closing or opening a switch element (120, 140),
• wherein the first (120) and the second (140) switch elements are connected in series between the potentials of the input connector (102), and an intermediate tap (107) between the first (120) and the second switch element (140) is connected to the output connector (106), wherein, by setting a first voltage and/or a first impedance at a first control contact (124) of the first switch element (120), the first gate driver (122) sets a first current profile at the first control contact (124) to actuate the first switch element (120),
• wherein, by setting a second impedance at a second control contact (144) of the second switch element (140), the second gate driver (142) sets a second current profile at the second control contact (144) to actuate the second switch element (140),
• wherein, during operation of the current converter (100), the first switch element (120) is closed and opened, and the second switch element (140) is then closed and opened in a continuously repeating manner so that one of the potentials of the input connector (102) is alternately applied to the output connector (106),
• wherein the current converter (100) is configured to:
• read in a parameter that characterizes an operating point of the half-bridge (110),
• determine a first variation of the first current profile as a function of the parameter,
• set the first variation of the first current profile by means of the first gate driver (122) at the first control contact (124) to close the first switch element (120),
• wherein the current converter (100) is configured to:
• determine a second variation of the second current profile as a function of the parameter,
• set the second variation of the second current profile by means of the second gate driver (142) at the second control contact (144) during the closing of the first switch element (120).

A non-transitory, computer-readable medium comprising instructions which, when executed by a current converter cause the current converter to

• read in (410) at least one parameter which characterizes an operating point of a half-bridge (110),
• determine (420) a first variation of a first current profile as a function of the parameter,
• set (430) the first variation of the first current profile by means of a first gate driver (122) at a first control contact (124) to close a first switch element (120), wherein the first gate driver (122) sets the first current profile by setting a first voltage and/or first impedance at the first control contact (124),
• determine (422) a second variation of the second current profile as a function of the parameter, and
• set (432) the second variation of the second current profile by means of a second gate driver (142) at a second control contact (144) during the closing of the first switch element (120), wherein the second gate driver (142) sets the second current profile by setting a second impedance at the second control contact (144).