Items Tagged with 'voltage'

ARTICLES

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Battery Characterization for High Speed Signaling

The complex impedance value over frequency for an electric vehicle’s battery cell is a good measure of the internal cell temperature, the state of charge (SoC), and the state of health. Moreover, comparing the battery stack impedance with the single cell impedances can reveal upcoming high contact resistances. Read on for the details of how to do it.


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Characterizing and Selecting the VRM

VRMs and VRM controllers are often selected based on size, efficiency, price, or a relationship with the manufacturer. This often leads to a poor VRM selection, requiring additional engineering resources, greater time to market, as well as, higher BOM costs to correct the deficiencies. In this article, we evaluate the choices, define some useful figures of merit, and provide specific selection suggestions.


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Target Impedance Limitations and Rogue Wave Assessments on PDN Performance

A common design technique for power distribution networks (PDN) is the determination of the peak distribution bus impedance that will assure that the voltage excursions on the power rail will be maintained within allowable limits, generally referred to as the target impedance. In theory, the allowable target impedance is determined by dividing the tolerable voltage excursion by the maximum change in load current.


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R&S Power

Rohde & Schwarz Helps Developers Optimize Power Supplies in Wireless Devices

The new R&S RT-ZVC02/04 multichannel power probe can measure across large current and voltage ranges without having to switch ranges, making it possible to monitor the power consumption of chipsets, radio modules and wearables such as smartwatches. When used in combination with an R&S RTE or R&S RTO oscilloscope, the current drain can be clearly correlated with analog and digital control signals, enabling developers to optimize the battery life of such wearables and wireless devices early in the development cycle.


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