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High-Voltage Structures for Galvanic Isolation in Integrated Circuits
Ptáček, Karel ; Husák, Miroslav (oponent) ; Zemánek, Miroslav (oponent) ; Boušek, Jaroslav (vedoucí práce)
This Thesis introduces a novel lateral resonant coupling technique and discusses the design of an 800 V galvanically isolated translator which is subsequently utilized in the 800 V half bridge driver for industrial applications. The fabrication cost of this design is lesser in comparison with the currently widespread galvanically isolated translators. For applications that require a higher level of galvanic isolation, a follow-up development of the galvanically isolated translator is presented. This design utilizes a single galvanic isolator for communication in both, low-to-high and high-to-low, directions, which greatly reduces the area consumed by the isolator. As a part of the subsequent design, a galvanic isolator transmitting an analog value is introduced. The analog isolator has been tested in a real AC-DC converter application as a replacement of the standard opto-coupler. This design enables full integration of primary and secondary side controllers in a single package, thereby reducing the complexity and cost of the AC-DC converters.
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Soft-switching Methods and Optimization of Output Stage of MOSFET Driver
Trojan, Vladimír ; Ptáček, Karel ; Prokop, Roman
This paper focuses on design and comparison ofoptimization methods for the output stage circuit of MOSFET gatedriver. Optimization methods aim to reduce voltage swing inducedon parasitic series inductance of package terminals. In order todetermine the effectiveness of proposed optimization methods,individual designs are compared with original MOSFET gatedriver circuit designed by Onsemi company. These optimizationmethods should improve performance of MOSFET gate driver inthe field of high-frequency use, where induced parasitic voltagecan cause false signals, interference or even breakdown ofunprotected structures.
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High-Voltage Structures for Galvanic Isolation in Integrated Circuits
Ptáček, Karel ; Husák, Miroslav (oponent) ; Zemánek, Miroslav (oponent) ; Boušek, Jaroslav (vedoucí práce)
This Thesis introduces a novel lateral resonant coupling technique and discusses the design of an 800 V galvanically isolated translator which is subsequently utilized in the 800 V half bridge driver for industrial applications. The fabrication cost of this design is lesser in comparison with the currently widespread galvanically isolated translators. For applications that require a higher level of galvanic isolation, a follow-up development of the galvanically isolated translator is presented. This design utilizes a single galvanic isolator for communication in both, low-to-high and high-to-low, directions, which greatly reduces the area consumed by the isolator. As a part of the subsequent design, a galvanic isolator transmitting an analog value is introduced. The analog isolator has been tested in a real AC-DC converter application as a replacement of the standard opto-coupler. This design enables full integration of primary and secondary side controllers in a single package, thereby reducing the complexity and cost of the AC-DC converters.
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