Inverter control is used to drive the motors of electric and hybrid vehicles efficiently. As the control and drive functions have different operating voltages, they must be isolated from each other, which are secured with a device like a photocoupler. This solution results in loud noise from the drive circuit. Another concern is that efficient IGBT driving requires small, versatile, high performance IGBT gate pre-driver ICs with built-in protective functions.
The TB9150FNG integrates a photocoupler that secures high-level isolation characteristic between control and drive. It incorporates a highly-precise IGBT temperature detection function, a flyback transformer controller and a short circuit detection function that all contribute to system downsizing.
Performance can be optimised by monitoring the IGBT’s operating temperature with the high accuracy IGBT temperature detection function, contributing both to downsizing of the IGBT and improved fuel consumption by electric and hybrid vehicles.