Commande optique intégrée en technologie CMOS pour les transistors de puissance

Abstract : The thesis dissertation is composed of 3 chapters. The 1st chapter introduces the thesis context of fast switching transients and highly integrated power electronics circuits. The functions and the issues of the close gate driver are presented. The gate driver is integrated in the AMS 0.18 µm technology with its optical functions. The second chapter deals with the transmission and modulation of the gate driver charge through the optical isolation barrier. A configurable buffer is designed in order to modulate the gate resistance value. An optical supply including a PV cell and a switched capacitors DC/DC converter is integrated. In the third chapter, two approaches are developed for the gate signal transfer. For the baseband analog transmission, the optical signal is a direct image of the pulse width modulation (PWM) signal whereas in the digital series transmission, only the commutation orders are transmitted in a high frequency frame. A logic circuit and an integrated clock are designed. The digital transmission allowed the transfer of information such as the gate resistance configuration. Large temperature range (-40°C to 140°C), optical supply constraints (supply voltage deviation) and optical alignment (photocurrent value deviation) are considered for the integrated circuits design.
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Davy Colin. Commande optique intégrée en technologie CMOS pour les transistors de puissance. Energie électrique. Université Grenoble Alpes, 2017. Français. ⟨NNT : 2017GREAT105⟩. ⟨tel-01819771⟩

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