# Four-switch buck-boost topology

Canonical URL: https://eloragrid.ai/symbols/four-switch-buck-boost-topology
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: 4SW-BB
Drawing use: Schematic, SLD
Reference families: Manufacturer

A non-inverting conversion arrangement with switching legs that support documented buck and boost operation.

## What it represents

A non-inverting conversion arrangement with switching legs that support documented buck and boost operation.
On a schematic, identify the two switching legs, shared inductor and common reference and trace the positive-polarity output and controller feedback. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
Four-switch buck-boost and inverting buck-boost have different power paths and output polarity.
The preview is a conceptual topology reference rather than a complete power-stage circuit. Switching sequences, magnetic design, component selection and control/protection details belong in the equipment design documentation.

## How to read it

- Identify the two switching legs, shared inductor and common reference.
- Trace the positive-polarity output and controller feedback.

## Information to show or reference

- Label the two switching legs, shared inductor and common reference.
- Cross-reference the positive-polarity output and controller feedback.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

## Important distinction

Four-switch buck-boost and inverting buck-boost have different power paths and output polarity.

## Facts

- Common schematic mnemonic: 4SW-BB — descriptive only; project/device documentation defines reference designations.
- Terminal / interface focus: The two switching legs, shared inductor and common reference
- Artwork scope: Original conceptual topology block; not a complete switch-level circuit.

## Public references

- [Power topology selection and public topology tutorials](https://www.ti.com/video/series/power-topology-selection.html) — Texas Instruments. Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.