GaN-Based Synchronous CCM PFC Prototype for Hydraulic Pump Power Supply
A GaN-based synchronous continuous conduction mode (CCM) power factor correction (PFC) prototype has been developed, achieving 300 W output with 98.5% peak efficiency. This design eliminates the need for heatsinks, making it suitable for hydraulic pump applications, which often face condensation issues due to conventional heatsink cooling methods.
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The prototype operates at 230 VAC input and regulates output voltage to 400 VDC, maintaining a power factor above 0.9 across a range of loads. The system achieves less than 10% total harmonic distortion (THD) and utilizes a GaN system-in-package for enhanced efficiency.
A dedicated controller manages inductor current sensing, and the design incorporates a low-side and high-side configuration facilitated by ZCD circuitry. The GaN solution significantly reduces power losses compared to traditional silicon alternatives, making it advantageous for high-density applications without heatsinks. The development of this prototype responds to industry needs for efficient power supplies in hydraulic pump systems, potentially reducing energy costs and improving compliance with regulatory standards.
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