Presentation
Portfolio
Offered services
Background
* Carried out performance and potential failure testing for TRIAC-based AC power control drivers in a new product.
* Gained additional experience with AC mains power control, power monitoring and isolation circuits.
* Developed power control boards to efficiently manage up to 405Wh Li-Ion battery charging and power delivery, including charge/ discharge protection and balancing, OS-compatible power on/off, automatic battery isolation, and user-monitored battery charge level with state-of-art fuel gauge ICs.
* Developed DC/DC converters for point-of-load applications with noise, thermal, efficiency, and stability considerations.
* Designed very low power ‘always-on’ circuitry for stand-by functions, as well as circuitry that reduced battery leakage to less than 100nA, compared to tens of microamps in older designs.
* Developed the required hardware and the PCB to host a GPS system with an active antenna option to obtain fast and accurate timing, as required for a new Sentinel-2 Base Magnetometer instrument.
* Developed a PCB to support an Intel Edison module to add embedded control and WiFi capability for the new Sentinel-2 instrument that included USB ports to download logged data and channel communication debugging.
* Designed hardware and up to 10-layers PCBs to fit noisy and noise-sensitive circuitry, such as SMPS, RS232, RF oscillator and signal processing functions.
* Collaborated in a multi-disciplinary team to specify mechanical, electronics and software integration with application of DFMA techniques for easier assembly and manufacturing.
* Designed the required hardware and PCBs for sensor adapters, audio amplifier daughter boards, and a RS485 interface to allow communication with customers’ instruments and systems.
* Managed contacts with semiconductor manufacturers and suppliers regarding technical issues, application, availability and obsolescence.
* Designed the hardware, embedded C firmware, and custom PCB for prototypes and final units.
* Applied DFMA principles to reduce production costs without affecting quality.
* Applied 16-bit PIC24F microcontrollers to manage analog signals from electrochemical, temperature, and barometric pressure sensors.
* Developed hardware and firmware drivers for sensors, in addition to DC-DC converters for on-board regulation.
* Designed hardware interfaces and a microcontroller-based high-voltage furnace subsystem control.
* Developed air pressure stability-detection and carbon-monoxide level detection running average algorithms.
* Researched supply, availability, suitability, and costs of components.
* Used CAD tools such as PSpice, Altium and MPLABX for simulation, PCB, and firmware development.
* Applied IPC rules, thermal and EMI considerations to custom PCBs to successfully integrate noisy DC-DC converters along with nanoamp-level sensitive sensors.
* Responsible for project management including planning, costs, HW/SW/PCBs development, testing, debugging, and BOMs.
* Built hardware prototypes to support the development of associated firmware.
* Participated in hardware and software integration in collaboration with team members.
* Carried out laboratory testing to monitor functionality and quality during development.


