A buck converter, also called buck regulator or DC-DC step-down switching regulator, is a type of DC-DC converter that provides an output regulated voltage that is lower than its input voltage.
ST's monolithic step-down (buck) converter ICs offer input-voltage capability up to 61 V and deliver output currents up to 4 A with high switching frequency.
These buck regulators embed a full set of protection functions (overcurrent, overvoltage, and over-temperature) to increase the mean time between failures (MTBF) and reduce the number of external components required, thus lowering BOM costs.
Monolithic buck converter ICs (buck regulator) for any application requirement
Product types: how to choose the right buck converter
Learn about ST broad selection of buck converters, designed to meet a wide range of requirements.
Low-consumption buck converters feature ultra-low quiescent current and high efficiency at light load to meet these application requirements.
However, they also introduce switching noise that could represent a big obstacle to comply with EMI standards and disturb noise-sensitive applications.
Low-noise buck converters help designers meet these challenges.
A short on-time ensures a large input-to-output conversion ratio while maintaining a high switching frequency.
- High-voltage technology together with high reliability, robustness, and compactness
- High efficiency at any load and a high level of performance for consumer and computer products
About buck converters
How does a buck converter work?
A buck converter usually uses two switches and an inductor to make a voltage controlled current source that interacts with the parallel combination of output capacitor and load, to generate the desired output voltage (VOUT < VIN).
Where and why is a buck converter used?
A buck converter is used to step down the voltage of a given input to achieve the required output voltage. Buck converters can be used in many applications, including smartphones, tablets, battery-powered equipment, industrial power systems and point-of-load supplies.
What are the advantages of a buck converter?
Buck converters offer a more efficient solution with fewer, smaller external components. They can step-down voltages using a minimal number of components. In the same time, they offer a lower operating duty cycle and higher efficiency across a wide range of input and output voltages.
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