Jack Grenfell

Background

About Jack Grenfell

Over 30 years in the field of electronics engineering, with the last 20 years in designing reliable, cost-sensitive, high-volume point-of-sale (POS) products.* Experience with creating Development Platforms, Reference Designs, and New Products with extensive Circuit and PCB reuse, and high-modularity.* Experience with Embedded Systems; specifically, SoCs, NOR, NAND, SRAM, LPDDR2, DDR3L, and embedded software.* Experience with custom IC specification/validation for SoC, PMIC, Backup Power Supervisor, Li-ion Battery Charger, Power Controller, Stepper Motor Driver, and Physical Security.* Experience with evaluating components and circuits for lowest implementation cost and working directly with vendors to obtain competitive pricing.* Experience with POS payment acceptance peripherals, such as, Magnetic Stripe, Contact, and Contactless Cards.* Experience with POS related components and accessories, such as, Power Adapters, Power Controllers, Lithium Batteries, Battery Chargers, Fuel Gauges, EMI/ESD Suppressors, Secure Keypads, LCDs, Cameras, Audio Codecs, UART/RS232 PHYs, Ethernet PHYs, LAN Transformers, Thermal Printers, GPRS Modules, WiFi/BT Modules, and Tamper Responsive Security.* Experience with communication buses such as HDQ, I2C, I2S, UART, SPI, SDIO, RMII, MIPI, and USB.* Experience with power management trade-offs, and extending the life/safety of Lithium-based Batteries.* Experience with the full product life cycle (PLC) encompassing requirements gathering, component selection or specification, circuit and PCB design, product validation, technical documentation, regulatory/certification approval, market introduction, in-house and customer support, product enhancements, and end-of-life issues.* Experience with leading and working within cross-functional teams in the delivery of complex hardware systems within established cost, schedule, and performance goals.* Proficient in Cadence OrCAD Schematic Capture, Allegro PCB Editor, and Gerber Viewers.