The invention relates to an electronic circuit (21) for a motor vehicle, comprising a first branch (B1) comprising a first switch (T1) and at least a second switch (T2), which are connected in parallel between a high point (PH) and a first midpoint (PM1), the first branch (B1) comprising a third switch (T3) and at least a fourth switch (T4), which are connected in parallel between a low point (PB) and the first midpoint (PM1).

A semiconductor circuit includes: a switching circuit having at least one switching element Q; a ground wiring; and a current detection circuit connected between the switching circuit and the ground wiring. A noise eliminating circuit is connected between the switching circuit and the ground wiring in a parallel relationship with respect to the current detection circuit.

Systems and methods for a GaN-based motor drive circuit using synchronous rectification is disclosed. In one aspect, a method of operating a motor drive circuit includes providing a half-bridge circuit including a high-side GaN switch and a low-side GaN switch coupled in series at an output node, providing a motor coupled to the output node, turning on the high-side GaN switch such that a first current flows through the motor, turning off the high-side GaN switch, turning on the low-side GaN switch when a voltage at the output node drops below a predetermined threshold voltage, sensing, using a sense device coupled to the low-side GaN switch, a magnitude of a second current that flows through the low-side GaN switch, and turning off the low-side GaN switch when the magnitude of the second current drops below a predetermined threshold current.