Teardown: Baseus 45W USB-C GaN Charger — Silicon Mitus Co-Packaged GaN and Hynetek Protocol IC Inside
2026-09-15 · Compiled by Best IT Parts from public industry reporting
Chongdiantou tears down the Baseus 45W single-USB-C GaN charger (model E01234), a 39.6 x 34.7 x 34.7mm, 69.3g palm-size adapter with fixed China-standard pins. ChargerLAB POWER-Z testing confirms PD 3.2 with PPS/AVS plus UFCS 2.0, QC3+, FCP, SCP, AFC and Apple 2.4A, delivering 5V/9V/12V/15V at 3A and 20V at 2.25A. The single-sided PCBA is potted in grey thermal compound for heat spreading and drop resistance. Key silicon: Silicon Mitus SP9676E co-packaged 700V GaN QR flyback controller (HSOP-8, sub-75mW standby, valley-lock and frequency fold-back modes), SP6521H secondary synchronous-rectifier controller (up to 500kHz, 10ns turn-off delay), Hynetek HUSB380B protocol IC with integrated VBUS FET and current-sense resistor, and a World WRLSB60M soft-recovery bridge. Input filtering uses JSH, KINLS and Junkang capacitors; output filtering a Yunxing 25V/680uF solid capacitor. A compact, well-documented BOM reference for 45W-class PD adapter designs.
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Technical details are reproduced as reported. Verify specifications against the original source before design or procurement decisions.