Signal and Power Integrity Engineer
Apple’s PMU Hardware Tech team are responsible for delivering the power in a highly configurable and controlled way to the high end Apple SoCs, which power everything from Apple Watch and Apple TV to iPhone, iPad and Mac.
We are looking for an outstanding engineer to join the Silicon Engineering team in developing hardware for Power Management Silicon Validation. You will work with a multi-functional team in the performance characterization of new Apple Silicon through board level Signal and Power Integrity analysis.
You will work closely with the cross-functional silicon validation team in defining the scope and methodology for signal and power integrity simulation and correlation measurement at the PCB level based on margins provided by the silicon/package design team. You also need to provide context to the simulation and lab measurement results and how they relate to the performance of the validation hardware.
On every project, based on your simulation results, you are expected to provide guidance on how to resolve signal and power integrity issues. You also need to guide the PCB designers on best practices in parts placement, layer assignment and routing.
- Proven knowledge of power supply architectures covering voltage regulator technologies, power distribution network (PDN) modeling, PCB design practices and trade-offs for PDN design and optimization.
- Good understanding of multi-phase Buck/Boost converters and LDO design principles, operating modes, and PCB design considerations
- Knowledge of signal integrity considerations for PCB design
- Strong fundamentals in 3D/2D EM simulation tools and transmission line theory
- Skills with associated tools for 2.5D (PowerSI, SIWave), 3D Full wave (HFSS, nWave), quasi-static tools (Q3D)
- Proven understanding of HSPICE, Spectre, AMS, and Simplis models for system-level transient droop analysis
- Expertise in working with lab equipment, such as: VNA, TDR, real-time scope and spectrum analyzer in correlation of simulation results
- Understanding of Die-package-board power delivery network co-design constraints and tradeoffs
- PCB and Package layout skill using Cadence Allegro tools is a plus
- Knowledge of CPM (Chip-Power-Model) usage for system transient analysis is a plus
- BSc/MSc/BEng/MEng/PhD in related fields
- Experience with Perl, Python or other scripting languages is desired. MATLAB experience is a plus
- Excellent documentation and communication skills, ability to work independently and a desire to mentor colleagues
- Demonstrated ability to innovate, drive quality and process improvement initiatives through collaboration.
- Apple is an equal opportunity employer that is committed to inclusion and diversity
- We take affirmative action to ensure equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Apple is committed to working with and providing reasonable accommodation to applicants with physical and mental disabilities
- Apple’s most important resource, our soul, is our people. Apple benefits help further the well-being of our employees and their families in meaningful ways. No matter where you work at Apple, you can take advantage of our health and wellness resources and time-away programs. We’re proud to provide stock grants to employees at all levels of the company, and we also give employees the option to buy Apple stock at a discount — both offer everyone at Apple the chance to share in the company’s success. You’ll discover many more benefits of working at Apple, such as programs that match your charitable contributions, reimburse you for continuing your education and give you special employee pricing on Apple products!
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