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Design considerations for fast DC chargers targeting 350 Kilowatt - issue 2/2019
Working groups within standards organisations have, around the world, defined everything from the operational envelope and charging sequence, to the communication and connectors of High Power...
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Linear voltage regulators operate at automotive temperatures
Designed for high reliability, high temperature applications, the CMT-Antares is Cissoid's latest regulator.
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Power Electronics Europe News
 
Battery gauge is first with integrated protection in CSP

Claimed to be the industry’s first single-chip with integrated fuel gauge, the bq27741 uses Texas Instruments’ Impedance Track monitoring algorithm to boost battery run-time. It can be used in space-constrained consumer and portable industrial and medical devices.

The device measures just 1.9x2.7x0.6mm and packaged in a 15-bump, CSP (chip scale package). It monitors and protects single-cell Li-Ion batteries, with what the company describes as high-accuracy fault detection and shutdown circuitry for better safety margins, including the use of full-cell voltage and charging range without false trips. It has integrated high-side NFET protection and impedance track algorithms which report remaining battery capacity, status and charge voltage.

The use of a high-side sense resistor allows the use of one common ground plane and removes offset and noise, to simplify layout, reduce cost and save board space.


 




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