EVLSTCH03-45WPD 45W USB Type-C Power Adapter is a USB-IF certified solution and reference design. EVLSTCH03-45WPD is an isolated power supply with an independent USB PD controller. The evaluation board uses a quasi-resonant flyback converter based on the STCH03 controller on the primary side, which provides optocoupler feedback for voltage regulation. This controller combines a high-performance low-voltage PWM controller chip and a 650V high-voltage starting unit in the same package. The STCH03 controller can drive the gate of the new 650V MDmesh™ M6 technology power MOSFET STD7N65M6.
On the secondary side, the rectification is based on the SRK1001 adaptive synchronous rectification controller to improve system efficiency. This controller drives the gate of the 100V STripFET™ F7 technology power MOSFET STL110N10F7.
The CC/CV regulation loop is always on the secondary side and is used to drive the power regulation stage and the USB Type-C® PD interface based on the STUSB4761 controller. The controller features a complete hardware USB PD stack for reliable, deterministic and secure negotiation according to the USB PD standard.
TEVLSTCH03-45WPD features Dual Transil Array ESDA25L for ESD protection, which protects against damaging electrostatic discharges from USB Type-C® connectors .
The evaluation board features a rugged adapter with output overvoltage, output undervoltage, output overpower, and output short-circuit protection. This reference design helps designers develop adapters with a short bill of materials, resulting in a cost-effective design quickly.
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