SUMMARY

• Principle Electrical - Electronic Engineer with 15+ years of experience in high speed digital and analog architecture/design for a wide variety of consumer and industrial high-performance electronic products.
• Experience in High Temperature High Pressure (HTHP) MWD/LWD and Wireline electronic instrumentation and design. Conceived patents and wrote papers of designs. Self-starter with strong analytical and interpersonal skills. Experience in System Integration.

PROFESSIONAL EXPERIENCE

Confidential, Houston, TX

Senior Electrical Engineer

Responsibilities:

• Designed High Voltage Resonant DC-DC converter from 400 V to 30 Volts at 25 A.
• Designed a Buck DC-DC converter from 60 Volts to 30 Volts at 5.0 A.
• Designed a controlled rectification 3 phase 400 Vac to 60 Vdc at 5.0 A.
• Designed magnetic components for the power supplies.
• Designed FPGA using VHDL for control and protection of high input voltage and power supply operation. Used PIC DSP for sensor interface and established communication to main system Controller for housekeeping purposes.
• Performed calculations using MathCAD, simulated using MathLAB and Spice, schematic entry using PCAD and Altium. Board interface to USB2.0, DDR2, and DDR3 high speed memory and PCIe busses.

Confidential, Houston, TX

Senior Electrical Engineer

Responsibilities:

• Developed and designed a state-of-the-art Brushless Motor control system for 180-200 Deg C based on ST Micro ST72141 uC interfaced to Actel MX42 FPGA.
• Designed a three-phase bridge for Trapezoidal and AC excitation 500 Volts at 3.0 A max using IGBTs and Power MOSFETs for ambient temperature of 180-200 Deg C.
• Designed a linear and switching High Voltage 1000 Vdc to 500 Vdc Voltage regulators. Voltage pre-regulation protects motor controller bridge and improves system downtime.
• Designed a Brushless Motor Resolver Encoding Board fully operating in electrically noisy environment. Provided better startup for motor operation in the well at 200 Deg C.
• Implemented motor protection features in Actel FPGAs using VHDL. Interfaced FPGA to an uC for motor operation algorithms for Trapezoidal and Vector Control and graceful motor shutdown during fault condition. Assembly and C code for uC.
• Designed a 30.0 Volts to 5.0 V Digital Power Supply (DPS), and a three-phase (DPS) from 60 Vdc to 33.00 Vdc at 15A max. Components work at near ambient temp of 200 Deg C.
• Wrote five patents in product development protecting product from being developed by competition. Captured design using Orcad schematic entry tool from Cadence.
• Performed MathCAD, MathLAB and SIMUlink for feedback Control Stability analysis in time and frequency domain - Bode, Nyquist, Root Loci etc. Used ORCAD for schematic entry.
• Designed 7th and 8th Order Bandpass filters Sallen-Key topology. Verified using Spice. Provided Communication separation for RX/TX channels down hole through noisy communication media.
• Tested brushless motor by performing various load tests at 500 Vdc using dynamometer (Magtrol), Generated Torque versus speed curves. Field tested at customer site.
• Verified circuit operation using PSpice (MultiSim, Spectrum, and ICAP4) and performed actual measurements. Checked electronic circuits to agree with actual electrical conditions within the instrument at HTHP.
• Integration of various boards, motors, and power supplies into the final tool to function as a single unit.

Confidential, Houston, TX

Senior Electronic Engineer

Responsibilities:

• ViewLogic Schematic Entry, analyzed with XTK and HyperLynx for High speed signal Integrity during pre-and post layout. Reduced product development cost from $50K to $25K and time from one year to six months per design by simulation and layout verification. Products worked when powered-up for the first time.
• Integration of different I/O, networking, and processor boards to form a complete Industrial Control System.
• Interface to high speed DDR2, and DDR3, USB2.0, CompactPCI busses.

Confidential, Houston, TX

Staff Engineer

Responsibilities:

• Designed A/D and D/A Computer I/O data processing SBC.
• Designed GPS PMC board, which included DPLL, FIFOs control, PCI interface, implemented in 10K100 ALTERA 5 FPGAs.

Confidential, San Jose, CA

Contract Engineer

Responsibilities:

• Designed V.34 modems increasing competitiveness in the market place by incorporating voice calling capability.
• Designed Audio/Video encoding/decoding SCB for Direct Television Broadcasting Systems as per ISO, CCITT Compression/decompression standards. Standardized the product and designed to a known standard.
• Designed ATM cards 155 and 25 Mbps for the S and CPI bus, and 8 and 16 port 10/100 Mbps Switched Ethernet Hubs. Improved products market share by including additional voice processing capabilities which comply with universally accepted standards.
• Designed SBC for SuperServers using Intel Processors, 10/100/1000 Ethernet, Token Ring, SCSI II.
• Altera 7000 series FPGAs as glue logic coded using VHDL for RAID storage systems. Implemented new functionality into the existing system, improved the market value of the existing product.
• Designed Brouter, and Router for Token Ring, 10/100 Ethernet, and Optical FDDI networks using Motorola 68030 processor, Altera FPGA in VHDL. Reduced the board size by half. Integrated the functionality of two boards into one. Reduced cost of manufacture from $12,000 to $6,000.
• Formulated next generation design and test tools for digital and analog designs, published a paper on automatic testing of SBC.
• Designed Real-Time VMEbus-based data acquisition and processing systems included A/D and D/A converter circuits, I/O logic and uP interfaces. Modeled and implemented the whole VMEbus interface in Glue logic. Reduced development time to market by three months.
• Developed firmware (PLM/86) for telecommunication call processing system. Reduced call processing system by ¾ of original size. Reduced cost of manufacturing by 50% as compared to the original call processing system. Integration of various call processing boards to form a complete Digital Telephone Exchange.

TECHNICAL SKILLS

S/W: ALTERA, XILINX, and ACTEL, Orcad, Altium, Power Logic, PowerPCB.

CPU: Pentium II and III, 68-K series and controllers, Intel 486 processor, 80186 and 80186 uC, 8051, PIC12C675, PIC16F84 etc. ST-Thomson STK41series.

DSP: TMS320F240, 406, 407, 2800 series. Analog Devices ADSP-21000 family.

Simulators: Innoveda XTK, Huperlynx, Multisim, MicroCAPs, and ICAP4, Pspice.

Languages: VHDL, MathCAD, MathLAB, SIMULink, C, BASIC, Assembly for 80521 and PIC.

Systems: CompactPCI, Ethernet, SMBus, SCSI, RAID, Custom buses, I2C LAN/WAN, Ethernet, Token Ring, FDDI, Mechatronics.