The reduction of electromagnetic emissions (EME) in switch mode power supplies (SMPS) has high importance especially in automotive applications. The main methods to influence the switching behaviour of SMPS are external filters, spread spectrum techniques and the output driver circuits. This paper presents the concept and its implementation of an output driver with adaptive current source control for high frequency boost converter. The benefit of the concept in comparison to previous solutions is adjusted driver gate current based on the information of the gate voltage slope without complex digital control scheme which needs to sense and to digitize the information of the switching current, switching node voltage and gate voltage. In addition, the concept allows to control the driver switching time independently from external parameters (temperature, input voltage, load current). The proposed concept was implemented for 8V output voltage, 500kHz switching frequency boost converter.