EPC's EPC9171 reference design board is specifically tailored for USB PD3.1 systems, featuring a versatile AC input voltage range of 90 VRMS to 265 VRMS. This design provides an isolated power supply solution capable of operating in extended power range (EPR) mode, catering to diverse application needs.
The EPC9171 design boasts impressive specifications, delivering a maximum output power of 240W at 48V output voltage and 5A load current. This enables robust performance for a wide range of applications requiring reliable power delivery within the USB PD3.1 ecosystem.
One of the key innovations in this design is its ability to achieve a remarkable power density of approximately 1.1 W/cm3. This feat is made possible by leveraging GaN power switches that operate at high switching frequencies in both primary and secondary circuits, optimizing efficiency and performance.
In addition, the synchronous rectifier stage of the EPC9171 design features a pair of 100V rated, 3.2mΩ EPC2218 GaN switches on the secondary side of the LCC stage. These GaN switches are driven by fast synchronous rectifier controllers, effectively minimizing losses across varying output voltage and current ranges. This sophisticated design approach not only enhances efficiency but also simplifies thermal management, ensuring reliable operation under different load conditions.
Overall, EPC's EPC9171 reference design represents a cutting-edge solution for power supply applications in USB PD3.1 systems. Its versatility, high power density, and efficient design make it a compelling choice for developers seeking reliable and high-performance power delivery solutions.
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