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Buck Power Supplies

Buck power supplies are the most common type of non-insulated DC-DC converters utilized as power sources for mobile devices and CPUs with a capacity in the range of a few watts to more than 100 watts. MOSFETs with high-speed switching performance are used since buck power supplies operate at a higher frequencies than the other types of power supplies. Demand for even higher efficiency is driving a shift to synchronous rectification. Toshiba is expanding the portfolios of its latest UMOS-Ⅷ-H and UMOS-Ⅸ-H series with high-speed switching performance and low on-resistance ideal for buck power supply applications.

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High-Side MOSFET Low-Side MOSFET



Name Outline Date of issue
Describes the features of the DTMOSV series and the improvements from the previous series 9/2017

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  • DTMOS Applications (Noise Reduction)
Describes the mechanism of noise generation and noise reduction techniques 9/2017 coming soon

Application Note

Application note
Name outline Date of issue
Describes planar, trench and super-junction power MOSFETs 11/2016
Describes the absolute maximum ratings, thermal impedance and safe operating area of power MOSFETs 11/2016
Describes electrical characteristics shown in datasheets 11/2016
Describes how to select power MOSFETs, temperature characteristics, the impacts of wires and parasitic oscillation, avalanche ruggedness, snubber circuits and so on 11/2016
Describes thermal equivalent circuits, examples of channel temperature calculation and considerations for heatsink attachment 2/2017
Describes the guidelines for the design of a gate driver circuit for MOSFET switching applications and presents examples of gate driver circuits 8/2017

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Describes the oscillation mechanism of MOSFETs for switching applications 8/2017

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·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.