H4PFC using HV BDS GaN and CCM/CRM PFC comparison

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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Leah.Yang@infineon.cn