Low-power dc/dc downconverters target portable designs
Texas Instruments designed its TPS622xx series of 2.25-MHz-switching-frequency dc/dc step-down converters to power microcontrollers and DSPs in portable electronics. In three versions, the TPS62290, TPS62260, and TPS62240 provide 1A, 600 mA, or 300 mA, respectively, at output voltages as low as 0.6V±1. Details... more
Waveform filtering shapes motor-drive currents
Epcos designed its SineFormer filter technology to improve the output waveforms from high-power frequency converters and motor drives. The unit simultaneously converts phase-to-phase voltages into a sinusoidal signal, damps common-mode currents, and forms the phase-to-ground voltage into a sine-shaped voltage. Details... more
TDR and S-parameter measurements: How much performance do you need?
Time-domain techniques are challenging established frequency-domain measurements in the analysis of high-speed serial networks. To obtain meaningful results, the measurement equipment must have adequate rise time, bandwidth, and dynamic range. You can derive the instrumentation requirements from the network standards. Details... more