Home / News & Industry Trends / Teardown: 45W USB-C GaN Fast Charger Uses SP

TEARDOWN

Teardown: 45W USB-C GaN Fast Charger Uses SP9676E Co-Packaged Chip

A 45W USB-C GaN charger teardown details an SP9676E co-packaged GaN primary, an SP6521H secondary-side rectifier and an HUSB380B-CD PD protocol controller.

Oct 11, 2026 · Dangel Technology editorial

A recent video teardown of a 45W USB-C GaN fast charger walks through the internal component selection of a compact PD wall adapter. The breakdown covers the primary-side GaN stage, the secondary-side rectification and the USB-C PD protocol controller used in the design.

On the primary side the charger uses an SP9676E GaN co-packaged device, an architecture that places the GaN switch and its driver in one package. The secondary side is handled by an SP6521H secondary-side synchronous rectification chip, while an HUSB380B-CD controller manages the USB-C PD contract.

The input stage is built around a WRLSB60M bridge rectifier, and the filtering capacitors are drawn from several capacitor brands rather than a single source. The source material is a video teardown and does not disclose a full bill of materials, efficiency curves or thermal measurements.

For 45W USB-C PD adapters, the combination of a co-packaged GaN primary, a dedicated synchronous rectifier controller and an independent protocol IC remains a common way to partition the power path. Buyers reviewing GaN charger designs can read the component list as a signal of how the primary and secondary stages are separated and how the PD contract is handled.

Industry news compiled by Dangel Technology editorial from public reporting by Chongdiantou (charging industry media). Technical figures are reproduced as reported; verify specifications against the original source before design or procurement decisions.