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DC-DC Converters

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A DC-DC switching converter is used to locally supply any component or part of a system with the desired DC voltage and current. Depending on the application's relationship between the input and output voltage, engineers have to choose the best power topology – buck, boost, buck-boost or inverting, with or without synchronous rectification. Or they can decide to use an implementation based on monolithic ICs or with discrete power switches and controllers – or even an advanced digital implementation. Whatever their choice, the right semiconductor products are key to meeting their specific efficiency and size design targets.

Boost Converter

In a boost DC-DC converter, the output voltage is higher than the input voltage including in a floating boost topology where the output does not share the reference point with the input. Boost DC-DC topologies are often used in battery-operated equip

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Buck Converter

A buck or step-down topology is used in DC-DC switching converters where the output voltage is lower than the input with or without input-output isolation.

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Buck-Boost Converter

In a buck-boost DC-DC converter topology, the output voltage can be higher or lower than the input voltage. Often used in battery-operated equipment, a buck-boost DC-DC converter requires high-efficiency and ultra-low stand-by current as well as a sm

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Our products and solutions

ST’s broad product portfolio includes highly-integrated DC-DC converters, power MOSFETs and rectifiers, protection ICs, linear voltage regulators, and specifically designed digital controllers and STM32 microcontrollers. We also provide a comprehensive range of hardware and software evaluation and development tools including our eDesignSuite that helps engineers design high-efficiency DC to DC converters.

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	Resource title	Version	Latest update

Application Notes (4)

	Resource title	Version	Latest update
PDF	AN5287 170W high input voltage two switch flyback based on L6565 and 1500V K5 MOSFETs	1.0	17 Mar 2021	17 Mar 2021 AN5287 170W high input voltage two switch flyback based on L6565 and 1500V K5 MOSFETs 1.0
PDF	AN4656 Bootloading procedure for STLUX™ and STNRG™ digital controllers	3.1	29 Mar 2022	29 Mar 2022 AN4656 Bootloading procedure for STLUX™ and STNRG™ digital controllers 3.1
PDF	AN5702 L9396 Configuration and layout	1.0	15 Sep 2021	15 Sep 2021 AN5702 L9396 Configuration and layout 1.0
PDF	AN5333 SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family	1.0	07 Mar 2022	07 Mar 2022 AN5333 SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family 1.0

Design Notes & Tips (2)

	Resource title	Version	Latest update
PDF	DT0145 PM8803/03C design tip: T2P issue with certain PSE	1.0	18 Mar 2022	18 Mar 2022 DT0145 PM8803/03C design tip: T2P issue with certain PSE 1.0
PDF	DT0146 PM8803/03C design tip: how to solve a marginality of AT standard	1.0	18 Mar 2022	18 Mar 2022 DT0146 PM8803/03C design tip: how to solve a marginality of AT standard 1.0

Brochures (1)

	Resource title	Version	Latest update
PDF	Low-dropout (LDO) linear voltage regulators Quick Reference Guide	3.0	02 Jul 2021	02 Jul 2021 Low-dropout (LDO) linear voltage regulators Quick Reference Guide 3.0

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DC-DC Converters

Boost Converter

Buck Converter

Buck-Boost Converter

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Application Notes (4)

Design Notes & Tips (2)

Brochures (1)

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