Purpose and Objectives
The primary goal of this thesis is to investigate the feasibility and advantages of Gallium Nitride (GaN) technology as a key component in inverter modules compared to existing solutions such as Silicon Carbide (SiC) MOSFETs and Insulated Gate Bipolar Transistors (IGBTs).
The work will be divided into three main phases:
Phase 1: Technology Analysis and Benchmarking
Objective:
Conduct an in-depth study of GaN technology for inverter applications.
Activities:
- Review state-of-the-art literature and technical papers to understand current trends and advancements in GaN-based power electronics.
- Benchmark GaN against alternative technologies (SiC IGBT) in terms of:
Switching speed
Efficiency
Thermal performance
Reliability and cost implications - Analyze what major OEMs and semiconductor companies are currently implementing in this domain.
- Collaborate with NXPs Application and Product Definition Team to gather expert insights and feedback on GaN adoption strategies.
Expected Outcome:
A comprehensive report summarizing the advantages limitations and market positioning of GaN technology for inverter modules.
Phase 2: Gate Driver Architecture Design for GaN
Objective:
Develop and validate a gate driver architecture optimized for GaN devices.
Activities:
- Focus on GaN requirements:
High-speed switching
Low parasitic inductance
Robust protection mechanisms - Perform analog design activities including:
Architecture definition and evaluation
Behavioral modeling and simulation
PVT (Process Voltage Temperature) analysis - Address industrialization aspects ensuring the design meets manufacturability and reliability standards.
- Supervise and support layout design activities considering:
Parasitic effects
Signal integrity
Impact of layout on performance
Expected Outcome:
A fully simulated and optimized gate driver architecture for GaN ready for prototyping.
Phase 3: Bench Characterization and Validation
Objective:
Validate the performance of a previous-generation GaN gate driver in NXPs laboratory environment.
Activities:
- Perform hands-on bench testing and waveform analysis.
- Identify critical issues and limitations in the existing design.
- Document findings in a detailed characterization report including:
Measured performance vs. simulated expectations
Recommendations for improvement
Expected Outcome:
A complete validation report highlighting gaps and providing actionable insights for next-generation designs.
Key Deliverables
Literature review and benchmarking report on GaN vs. SiC/IGBT technologies. Gate driver architecture design documentation including simulations and layout considerations. Bench characterization report of previous-generation gate driver.
Required Skills
- Analog circuit design and simulation (SPICE-based tools)
- Layout design (Cadence Virtuoso or equivalent)
- Power electronics fundamentals
- Laboratory measurement techniques (oscilloscopes power analyzers)
- Collaboration with cross-functional teams (Application Engineering Product Definition)
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