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Step-down converter with variable output voltage in range from 20 to 100 V
Pazourek, Petr ; Šmirg, Ondřej (referee) ; Hanák, Pavel (advisor)
This master's thesis describes the design and the implementation of a step-down converter with variable output voltage for laboratory purposes. In the introduction the basic functions of switching power supplies are shown, flyback, forward and push-pull converters are described, followed by some integrated circuits for power management of converters. The second chapter discusses in detail the design of requested switched power supply, including the calculation of the electronic parts and design of the storage inductor. Following are described some observations of building this power supply, including the output characteristics. In conclusion, the obtained results are assessed, including proposals to improve whole design.
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Analysis of switched-mode LED drivers
Stehlík, Ota ; Vyskočil, Pavel (referee) ; Kubíček, Michal (advisor)
The aim of this thesis is to design, produce and verify the operation of two different LED drivers for automotive industry, which controls the ultra-bright white LEDs. At the beginning of a brief introduction explaining the principle of operation of LEDs. Furthermore theory describes the functions of all three basic drivers involved as buck, boost and buck-boost. Based on the requirements are selected ICs suitable for this implementation, theoretically described their block diagrams including the individual diagrams and eventually these samples are made, revived and measured their parameters.
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Templates of DC/DC Converters
Skoupý, Petr ; Kubíček, Michal (referee) ; Šebesta, Jiří (advisor)
The aim of this thesis is a suggestion and a realization of universal DC/DC convertor with three chips. The first part of this work is focused on the progressive analysis of the power and control part, as function blocks and diagrams. The greatest emphasis is placed on the three circuit wiring for step-down, step-up and inverting convertor. It was necessary to choose the right control circuit, which is available on the market and fulfil all our requirements. Progressive analysis of outer peripheral parts calculations and selecting for the convertor with specific parameters and load characteristic and creation of universal PCB with shouldering is the final realization.
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Templates of DC/DC Converters
Skoupý, Petr ; Kubíček, Michal (referee) ; Šebesta, Jiří (advisor)
The aim of this thesis is a suggestion and a realization of universal DC/DC convertor with three chips. The first part of this work is focused on the progressive analysis of the power and control part, as function blocks and diagrams. The greatest emphasis is placed on the three circuit wiring for step-down, step-up and inverting convertor. It was necessary to choose the right control circuit, which is available on the market and fulfil all our requirements. Progressive analysis of outer peripheral parts calculations and selecting for the convertor with specific parameters and load characteristic and creation of universal PCB with shouldering is the final realization.
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Analysis of switched-mode LED drivers
Stehlík, Ota ; Vyskočil, Pavel (referee) ; Kubíček, Michal (advisor)
The aim of this thesis is to design, produce and verify the operation of two different LED drivers for automotive industry, which controls the ultra-bright white LEDs. At the beginning of a brief introduction explaining the principle of operation of LEDs. Furthermore theory describes the functions of all three basic drivers involved as buck, boost and buck-boost. Based on the requirements are selected ICs suitable for this implementation, theoretically described their block diagrams including the individual diagrams and eventually these samples are made, revived and measured their parameters.
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|
|
Step-down converter with variable output voltage in range from 20 to 100 V
Pazourek, Petr ; Šmirg, Ondřej (referee) ; Hanák, Pavel (advisor)
This master's thesis describes the design and the implementation of a step-down converter with variable output voltage for laboratory purposes. In the introduction the basic functions of switching power supplies are shown, flyback, forward and push-pull converters are described, followed by some integrated circuits for power management of converters. The second chapter discusses in detail the design of requested switched power supply, including the calculation of the electronic parts and design of the storage inductor. Following are described some observations of building this power supply, including the output characteristics. In conclusion, the obtained results are assessed, including proposals to improve whole design.
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