9 Buck-Boost Converter Applications

This section presents guidelines for specific applications involving buck-boost converters.

Different Methods to Drive LEDs Using TPS63xxx Buck-Boost Converters: SLVA419

This application note shows different methods to drive LEDs using buck-boost converters from the TPS63xxx converter family. The presented methods are compared in terms of different design aspects, such as complexity, cost and solution size. The same basic principles can also be be applied to other devices or topologies.

Low-Power TEC Driver:SLVA677

The ability of the non-inverting buck-boost converter to increase or decrease voltage can be used to control the current flow through a Peltier element. This application report explains how the buck-boost converter can be used to drive the Peltier element in order to implement active thermoelectric cooling or heating.

Buck-Boost Converters Solving Power Challenges in Optical Modules: SLVAEB2

This application note gives a short introduction to optical modules and the need for an optimized power tree in them. The use cases and benefits of four-switch and inverting buck-boost converters inside optical modules are discussed.

Improve Efficiency in TWS and Hearing Aid Earbuds With a Buck-Boost Converter: SLVAED7

To improve efficiency when charging one battery from another, a buck-boost converter can be used to track the voltage of the charged battery. By keeping the voltage headroom of the linear charger to the minimum, the charging efficiency can be significantly improved. This report shows the advantages of using buck-boost converter in true wireless stereo (TWS) headphones.

High-Efficiency Backup Power Supply:SLVA676

This application report describes a circuit which addresses instantaneous protection of main power interruptions by using a buck-boost converter and a backup capacitor. It also provides the design, schematic, key components, and measurement results showing the performance of the circuit.

Smart Electricity Meter Supercapacitor Backup Power Supply With Current Limit: SLVAEI4

A simple and low-cost design of a backup power supply for smart electricity meters using buck-boost converter is presented in this application report. The design provides output current of up to 2 A for meter's high-power RF communications, and an adjustable charge limit to reduce system heating concerns.

Using Non-Inverting Buck-Boost Converter for Voltage Stabilization: SLVAEA2

Having a stable and accurate voltage supply is crucial for proper operation of electronic devices. This application note presents the buck-boost converter as a voltage stabilizer, and discusses several parameters that have to be taken into account when selecting the right device for voltage stabilization.