Abstract: A circuit arrangement includes a half-bridge with a high-side switch and a low-side switch, each switch including a control terminal and a load path. The load paths of the high-side switch and the low-side switch are coupled in series between a terminal for a supply potential and a terminal for a reference potential a high-side driver operable to provide a high-side drive signal received at the control terminal of the high-side switch. The high-side driver includes supply terminals a charge storage device coupled between the supply terminals of the high-side driver. A control circuit includes a charging circuit, a switching element and a drive circuit operable to switch on the switching element dependent on at least one operation parameter of the circuit arrangement.

Abstract: An embodiment of the invention relates to a driver adapted to provide a drive signal with an adjustable waveform for an external bridge to control EMI. The driver includes a detector configured to measure a switching characteristic of a switch in the external bridge to produce the drive signal with an adjustable waveform characteristic. The driver includes an adjustable circuit element to adjust the waveform characteristic in response to the measured switching characteristic. The measured switching characteristic may be a derivative of a voltage of the switch in the bridge such as a derivative of a drain-to-source voltage of a half-bridge circuit. The driver may be formed with an amplifier with an adjustable gain controlled by the signal produced by the detector. The adjustable gain amplifier may be formed with a transistor coupled in series with a leg of a current mirror.

Abstract: An embodiment of the invention relates to a driver adapted to provide a drive signal with an adjustable waveform for an external bridge to control EMI. The driver includes a detector configured to measure a switching characteristic of a switch in the external bridge to produce the drive signal with an adjustable waveform characteristic. The driver includes an adjustable circuit element to adjust the waveform characteristic in response to the measured switching characteristic. The measured switching characteristic may be a derivative of a voltage of the switch in the bridge such as a derivative of a drain-to-source voltage of a half-bridge circuit. The driver may be formed with an amplifier with an adjustable gain controlled by the signal produced by the detector. The adjustable gain amplifier may be formed with a transistor coupled in series with a leg of a current mirror.