Internal Power Switch Buck-Boost Regulators
Analog Devices' monolithic buck/boost synchronous dc-to-dc converters offer high current delivery and operation with a wide range of power sources, including single or multiple cell batteries, supercapacitor stacks and wall adapters. A proprietary 4-switch PWM buck-boost topology provides low noise, jitter-free switching through all operating modes, making them ideal for RF and precision analog applications that are sensitive to power supply noise. With their unique internal four MOSFET switch combination, they can seamlessly transition from step-down mode, through 100% dropout operation, and then to step-up mode to allow a fixed output voltage even when the input voltage fluctuates above or below the output. Some devices may be paralleled for higher power delivery, or include automatic maximum power point tracking (MPPT) for solar battery charging and MPPT control functions.
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Design Notes
- DN361 - Simple Battery Circuit Extends Power over Ethernet (PoE) Peak Current PDF
- DN275 - Single Inductor, Tiny Buck-Boost Converter Provides 95% Efficiency in Lithium-Ion to 3.3V Applications PDF
- DN413 - Wide Input Voltage Range Buck-Boost Converter Simplifies Design of Variable Input Supplies PDF
- DN369 - Industry's First 4-Switch Buck-Boost Controller Achieves Highest Efficiency Using a Single Inductor PDF
- DN330 - High Input Voltage Monolithic Switcher Steps Up and Down Using a Single Inductor (Design Note 330A) PDF
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Technical Articles Page
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- 1.5A Monolithic Buck-Boost DC/DC Converter with Up to 95% Efficiency Features 2.5V–15V Input and Output Voltage Ranges
- Techniques to Maximize Solar Panel Power Output
- 15V Buck-Boost Converters with Ultralow 1.3µA Quiescent Current are Tailored to Micropower Applications and the Internet of Things
- 2.7V to 40V Monolithic Buck-Boost DC/DC Expands Input Capabilities, Regulates Seamlessly through Automotive Cold-Crank and Load-Dump Transients