Providing design engineers with a stable power device capable of sensing current, TT electronics BI Technologies has developed a constant DCR surface mount power inductor. Designated the HM69S Series, the inductor maintains a constant DC resistance value, with a shift of only ±2% at room temperature and 7% over a 100°C temperature range.
According to David Smolik, director of product development for BI Technologies, power electronics engineers often use the resistance of the inductor to detect current in a PWM circuit because the inductor's DCR is lossless and quite accurate. "While this is a good means of detecting current, stability over the temperature range must be compensated due to the use of a copper conductor, which is typically unstable with TCR at 3900ppm/°C," said Smolik. "By developing an inductor with a TCR of 700ppm/°C, we are able to provide customers with a much more stable and accurate device, one that does not require thermal compensation for the resistance change of the copper conductor."
The HM69S Series power inductor was designed for multiphase voltage regulator applications, including powering CPUs.
The power inductor features an inductance range of 90nH to 200nH, with a maximum rated DC current of 75A and TCRs of 700ppm/°C. Typical DCRs are 0.950m?. Operating temperature ranges from -40°C to +125°C, with a maximum temperature rise of +40°C. Constant DC resistance over the specified temperature range is ±2%.
The surface mount power inductors are packaged in 700 piece reels and 4,200 piece cartons.
For more information about the HM69S Series constant DCR inductor, contact BI Technologies at email@example.com; by phone at 714-447-2759, by fax at 714-447-2400; by mail at 4200 Bonita Place, Fullerton, CA 92835; or visit http://www.bitechnologies.com/products/index.htm.
BI Technologies has been an innovator and leader in electronic components for more than 50 years.The company is a global manufacturer of trimming and precision potentiometers, position sensors, turns-counting dials, chip resistor arrays, resistor networks, integrated passive networks, transformers, inductors, hybrid microelectronics and custom integration products for communication, computer, industrial, and automotive applications.
BI Technologies serves a global customer base with manufacturing locations in the United States, Mexico, Scotland, Japan, China and Malaysia.
TT electronics plc is a global electronics company manufacturing a broad range of advanced electronic components, assemblies and sensor modules for the automotive, industrial, telecommunication, computer and aerospace markets.
For more information, contact:
David Smolik, Director of Product Development
BI Technologies, Magnetic Components Division
Note: The above text is the public part of the press release obtained from the manufacturer (with minor modifications). EETimes Europe cannot be held responsible for the claims and statements made by the manufacturer. The text is intended as a supplement to the new product presentations in EETimes Europe magazine.
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