Integrated Circuits

IC chips and Discrete Devices. Silicon, Germanium and Gallium Arsenide products. Diodes, Transistors and Zeners. Part of delabs Technologies

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Friday, September 18, 2020

MAX8881 and DS2490 Characterization for Cells

Rechargeable AA cells are very popular for a large variety of portable applications. The number of brands is also high, and the cell quality can differ considerably. Cell capacity is sometimes different from that specified, and the capacity often deteriorates dramatically after a limited number of discharge cycles. ....

See Maxim Application Note - Simple Characterization Circuit for Rechargeable AA Cells

https://www.maximintegrated.com/en/design/technical-documents/app-notes/3/3874.html

This characterization circuit, plus a PC and some software, accurately measures the full discharge cycle for a rechargeable AA cell. Cell capacity and output resistance can easily be determined from the curve resulting from these measurements.

MAX8881 and DS2490 Characterization for Cells

In Figure 1, the simple circuit is connected to the USB port of a PC. No external power source is required because power is extracted from the USB bus voltage. U1 (DS9490R) is a USB dongle that converts the USB protocol to the 1-Wire® protocol, thereby allowing the PC to communicate with the key circuit component (U2).

LED Chips and RF Semiconductors - Cree

 "Cree LEDs combine highly efficient InGaN materials with proprietary substrates to deliver superior price/performance for high-intensity LEDs...."

LED Chips and Lighting from Cree - https://www.cree.com/

Product line include lighting-class LEDs, LED lighting Solutions. They also have semiconductors for wireless and power applications.

LED Chips and RF Semiconductors - Cree

Wolfspeed, A Cree Company, stands alone as the premier provider of the most field-tested SiC and GaN Power and RF solutions in the world. As the leader in wide bandgap semiconductor technology.

Cree Lighting Solutions

"The lighting elements of LEDs are modulated by diffusers, so you won't be distracted by hotspots or glare. The only thing you'll experience is life under beautiful, radiant light."

Powerex - Power Devices Manufacturer

A leading supplier of discrete devices, modules and integrated high power semiconductor solutions. They are also a sales partner to Mitsubishi Electric and other power electronic firms.

Powerex - Power Devices Manufacturer - https://www.pwrx.com/

They manufactures a wide range of rectifier and thyristor products at its Youngwood, PA factory. The product line includes IGBTs (Insulated Gate Bipolar Transistors), HVIGBTs, IPMs (Intelligent Power Modules), rectifiers, thyristors, custom power modules and assemblies.

Powerex - IGBT HVIGBT

IGBT / HVIGBT

The Powerex IGBT/HVIGBT line-up includes both Mitsubishi devices as well as Powerex self-manufactured devices. Mitsubishi IGBTs employ their CSTBT (Carrier Stored Trench-Gate Bipolar Transistor) technology, supporting the reduced power loss and miniaturization required for industrial applications

J1-Series Power Modules Enhance Automotive Efficiency & Reliability.Powerex HVIGBTs and HV diodes, feature highly insulating housings that offer enhanced protection by means of greater creepage and strike clearance distance for many demanding applications like medium voltage drives and auxiliary traction applications.

Powerex, Inc.
200 Hillis Street, Youngwood, Pennsylvania 15697, USA.

Wednesday, August 19, 2020

Field Oriented Control using XC886/888

"XC800 family of 8-bit MCUs combines a dual-cycle 8051 core with embedded flash memory and powerful on-chip peripherals. The high-quality MCUs are well-suited for a wide range of 5 V and 3 V applications, including motor control, automotive body and white goods, and add networking functionality to industrial and building automation systems."

Field Oriented Control using XC886/888

The FOC Drive Application Kit provides customers with a cost-effective method of evaluating and developing Permanent Magnet Synchronous Motor (PMSM) control applications using the FOC technique.

FOC Drive Application Kit

CANmotion BLDC Evaluation Platform

"The CANmotion board was designed to provide an easy to use BLDC motor control platform. The board is equipped with a reverse polarity safe power supply with a DC/DC converter for 5 V supply line, a high performance 8 bit microcontroller with 32 kB flash memory, an operational amplifier for the DC-link current measurement, a resistor network for back EMF and DC-link voltage measurement, a CAN interface and of course an inverter with discrete gate driver."

From Infineon Technologies - parent company is Siemens

Tuesday, August 18, 2020

Solid State Optronics - Special SSR Devices

SSO  founded in 1982 by Zag Kadah develops unique products in the form of solid state technology devices. SSO was the first company to offer a solid state relay with over-current protection in an ultra-miniature 4 pin SOP package - .ssousa.com

Solid State Optronics - Special SSR Devices

Products include MOS Output SSRs ,  SCR Output SSRs (Solid State Relays), Multifunction Telecom Switches, Triac Drivers and many types of Optocouplers.

Solid State Optronics - Special SSR Devices

How does a telephone line work?

"There are several different states that the phone line can be in, depending upon what the phone is doing, and what the phone company is doing to the phone. The central office (or nearby equivalent) applies various DC and AC voltages to the two-wire phone loop (labeled "tip" and "ring") during these various stages of call progress. In the idle state, the telephone company central office applies -48(±6) Vdc...."

Solid State Optronics
2 North First Street, San Jose, CA 95113, USA.

Friday, August 14, 2020

MicroTec from Siborg Canada

Development and production of different kinds of scientific software. Has developed software products like SibLin: a 3D solver for Poisson/Diffusion/Heat Transfer. They also develop custom designed software tools. https://siborg.com/

MicroTec from Siborg Canada

MicroTec from Siborg Canada

MicroTec is a widely recognized educational tool and is now used by more than 75 universities in 25 countries including University of California at Berkeley and Waseda University in Tokyo. The software is a perfect supplement to any book or a course on semiconductor devices or processes which enables students to create their own devices and test them under varying real world parameters.

Siborg Systems Inc
24 Combermere Cres, Waterloo, ON N2L 5B1 Canada

Tuesday, July 14, 2020

Semtech Corporation - Analog and Mixed Signa

Semiconductor Solutions for a wide range of Applications, from Networking & Communications and Consumer Electronics like Smartphones, Digital Camera, HDTV and Devices like Netbooks and Set Top Box. They also manufacture High Rel Discrete Semiconductors.

Semtech Corporation - Analog and Mixed Signal - https://www.semtech.com/

Semtech Corporation  a leading supplier of analog and mixed-signal semiconductors announced a new addition to its smart sensing solutions that enhances wireless connectivity by intelligently controlling the radio frequency (RF) power in connected devices including smart phones, tablets and wearables.

Semtech Corporation - Analog and Mixed Signal

“Semtech offers a unique smart sensor solution targeting specifically SAR proximity applications,” said David Wong, Senior Director for Semtech’s Wireless and Sensing Products Group. “The new sensing solution provides best in-class sensitivity for optimal human presence detection enabling mobile manufacturers to comply with worldwide SAR regulation without otherwise compromising RF system performance.”

Founded 1960, Corporate headquarters in Camarillo, California.

Semtech Corporation 
200 Flynn Road, Camarillo, CA 93012, United States

Toshiba Electronic Devices

Toshiba Electronic Devices offers a wide IC and discrete product range. high-end memory, microcontrollers and ASIC. Optoelectronic Semiconductors include Light Emitting Diodes (LEDs) and Photocouplers.

Toshiba Electronic Components

Toshiba InGaAlP LED-devices feature high brightness as it employs four-element LED chip technology (InGaAlP). Higher Visibility, Low Power and Reliable LEDs for Lighting.

Toshiba News n-channel power MOSFET

Toshiba expands family of semi power devices with new n-channel power management MOSFET. - Toshiba News n-channel power MOSFET

Toshiba has a wide and very diverse range of components and advanced materials technologies.