Job Description

H4PFC using HV BDS GaN and CCM/CRM PFC comparison

Your role

Key responsibilities in your new role

Background / Problem Statement

• 1. In a conventional AC DC power supply, the rectifier bridge thermal performance becomes a critical concern for power levels above ~160 W due to conduction losses concentrated in the diode bridge.
• 2. A common approach to reduce these losses is to replace the passive bridge with:
• an active bridge, or
• a bridgeless PFC topology such as totem pole PFC.

Selected Approach for This Project

• The project will use an H4PFC architecture implemented with bidirectional high voltage GaN devices to address rectifier bridge thermal limitations and improve efficiency.

Hardware Evaluation Plan (CCM H4PFC)

• Perform a hardware evaluation of a CCM (Continuous Conduction Mode)H4PFC implementation using the Infineon ICE3PCS01 PFC controller.
• Evaluation focus areas should include (as applicable):
• thermal behavior of power stage components (especially compared tobridge based solutions), o,,controller behavior in CCM operation,
• efficiency and loss distribution across the power stage.

Simulation / Loss Analysis Work

• Run simulations and perform loss calculations comparing CRM vs. CCMoperation, including:
• CRM loss estimation (e.g., peak currents and switching behaviorimplications),
• CCM loss estimation (e.g., RMS currents, conduction losses, switchinglosses),
• clear comparison of loss contributors and operating tradeoffs.

Action Items

• Build / set up CCM H4PFC hardware using ICE3PCS01
• Execute hardware evaluation (efficiency, thermal, stability,operating waveforms)
• Run simulations for CRM and CCM
• Complete CRM/CCM loss calculations based on simulation results
• Summarize findings and recommend preferred operating mode / designadjustments

Your profile

Qualifications and skills to help you succeed

Target Majors:

• Undergraduate/Graduate students in Electrical and Computer Engineering (ECE),

Preferable Qualifications:

• Hands-on experience with circuit design.
• Familiarity with Plecs /FEA simulation software.
• Completed coursework in Power Electronics.)

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As a global leader in semiconductor solutions in power systems and IoT, Infineon enables game-changing solutions for green and efficient energy, clean and safe mobility, as well as smart and secure IoT. Together, we drive innovation and customer success, while caring for our people and empowering them to reach ambitious goals. Be a part of making life easier, safer and greener.

Are you in?

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Leah.Yang@infineon.cn