Patrick Wang Email & Phone Number

Austin, Texas, United States

• Lead the design of 1.0V, 1.2V and 1.8V electrostatic discharge(ESD) clamps for state-of-the-art technology node
• Performed and documented simulations with ESD accurate models for multiple process nodes
• Evaluated and updated charged device model (CDM) spice simulation setup for ESD cells to coincide with TSMC’s recommendation
• Performed capacitance extraction for ESD cells, including individual P-cell and N-cell capacitance contribution. Results gave the design team a better approach for the next design
• Automated data extraction of simulation results with Python and Perl scripts
• Started to create a SQL database with Python to store and sort CDM measurement data accessible to various teams

Austin, Texas, United States

• Improved and verified the design of multiple power converters: 180W (60V to 5V) buck converter, 60WUSB-C buck converter, 15W USB-A buck converter, and a 2W LCD backlight boost converter
• Supported in the design of a complex start-up circuit in the battery management system board andverified the design with various test-cases in SPICE simulations
• Identified and fixed various system/board-level issues which caused performance issues; such as excessive noise readings on ADCs due to crosstalk from memory clock onto data lines
• Created and performed board-level and system-level bring-up/testing procedure document for prototype units and long term reliability testing units
• Supported supply-chain team to find alternate vendors and firmware team with hardware repairs

Urbana-Champaign, Illinois Area

• Resonant dc/dc converter design (30 kW) at 100 kHz, working with SiC MOSFET at 1 kV DC-Link Voltage.
• Resonant tank design including: Series inductor design, series capacitor design and transformer design
• Control architecture for switching operation and optimal dead time
• SiC MOSFET health monitoring

United States

• Analyzed the package effects of CDM peak current for ESD protection purpose
• Created models and traces of packages in a field induced CDM tester in Q3D/HFSS to extract capacitor matrices and S-parameters used in Cadence Spice simulations to match measurement data whichpromoted design.
• Developed a TCL script which performed Boolean operations on package layers which allowed the estimation of capacitance using parallel-plate analysis

Nürnberg Area, Germany

• Power Electronics Department at Corporate of Technology Siemens
• Analyzed single/three-phase half-bridge and NPC inverters through theoretical calculation and simulation results from Simulink
• Tested efficiency of GaN inverters with different DC-link voltage with varying switching frequency and load
• Designed PWM offset waveforms which allowed zero or reduced midpoint current in a three-phase, three level NPC topology, thereby reducing the required capacitors at the DC-link.

Urbana-Champaign, Illinois Area

Palo Alto, California

• Worked on a charging circuit; a circuit containing a switching Li-Ion battery charger, stand-alone fuel gauge and a boost converter for phone batteries
• Tested and analyzed on three early prototypes PCBs of the circuit for their functionality and power efficiency with multiple charge and discharges of batteries
• Located and fixed a fatal problem of which the battery charger would involuntarily go on and off
• Revised a new version for the circuit with a different thermistor and reduced the charging current to avoid overheating
• Programmed in C/C++ through mbed compiler to establish a 1-Wire connection among multiple fuel gauge with a stm32 multiprocessor
• Worked on test fixtures using Arduinos of another circuit for the manufacturing lines

Shanghai City, China

• Supported electronics engineering department
• Prepared electrical technical documents and other assistance work
• Assisted co-workers in planning automation lines, and suggestions in robots’ operationsWorked with the quality control team
• Travelled with the department to on-site spectating at (i.e. Volkswagen production) to evaluate fixtures and equipment used in production

Erlangen, Bavaria, Germany

• Planned, designed, and built a circuit that included a clock, a counter, and an op-amp as a day counting sensors
• Developed ideas and designed the circuit and verified on Spice; built and soldered the circuit on strip-boards
• Used an astable multi-vibrator to produce a clock signal; used NAND/NOR logic gates to create a 4-bit counter and an op-amp circuit to amplify the signal from a photo sensor

Master Of Science - Ms, Electrical And Electronics Engineering

Bachelor Of Science - Bs, Electrical Engineering, 3.88/4.00

Highest Honors Dean’s list for 2015, 2016 (Spring), 2017