A new method to thermally manage an electronic control unit while reducing radiated emissions

Abstract

This paper provides a methodology to thermally manage an electronic control unit while reducing its radiated emissions. Measurements of the radiated emission levels for a particular electronic control unit revealed excessive levels. Electronic control units utilize pulse width modulated signals to control an external load. The rise and fall times of the pulse width modulated signal impact both the radiated emissions and the thermal behavior of the electronic control unit. The method proposed in this paper establishes a generalized relationship between the rise and fall times of the electronic control unitpsilas pulse width modulated signals to its associated radiated emission levels and thermal behavior.