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An analysis of the concepts and variables associated with state-space, canonical and system transfer function…

An analysis of the concepts and variables associated with state-space, canonical and system transfer function representations of the common converters. In direct circuit linearization averaging technique, dynamic behavior of the circuit cannot be studied at the resonant frequency as the switching frequency component of the output for the resonant converter is different from the local average value frequency. Thus, the integral expression of the average value needs to be extended using the Fourier series; and the derivative expression with respect to a particular frequency is required for the dynamic analysis.

Inductor design characteristics are defined in terms of various parameters. Inductor winding is made of a conductor…

Inductor design characteristics are defined in terms of various parameters. Inductor winding is made of a conductor material which may be a single round wire or a unique multi-stranded conductor known as Litz wire. Litz wire has the main advantage of reduced skin effect. Inductor design characteristics are defined in terms of various parameters which are discussed in this technical article.

We review switching losses involving diode recovery charge, transistor switching with clamped inductive load, device…

We review switching losses involving diode recovery charge, transistor switching with clamped inductive load, device capacitance and leakage, package, and stray inductances, and the efficiency versus switching frequency curve.

This article describes superposition and its simple applications.

This article describes superposition and its simple applications.

Texas Instruments (TI) released today the industry’s first Near Field Communication (NFC) sensor transponder family.…

Texas Instruments (TI) released today the industry’s first Near Field Communication (NFC) sensor transponder family. The RF430RL25xH system-on-chip (SoC) device is equipped with a fully programmable low power microcontroller (MCU), non-volatile FRAM, an analog-to-digital converter (ADC) and supports an ISO 15693-compliant NFC interface as well as Serial Peripheral Interface (SPI) and Inter Integrated Circuit (I2C). The high frequency13.56-MHz sensor transponder can operate on full passive (battery-less) or semi-active modes for optimal battery life in portable and wireless sensing applications.