Tech news tagged ‘filter’

Bi-directional 3MHz dc-dc charges Li-ion and supplies 5V

Aimed at devices that can both be charged from USB, and supply 5V through the same connector for USB on-the-go (OTG), Fairchild has released a bidirectional dc-dc converter.

FAN54015 is a 3MHz synchronous converter, capable of supplying 1.45A to the cell at a programmable float from…

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ADI reference board combines FPGAs and 14-bit ADCs

The latest addition to a range of FPGA-based reference design boards from Analog Devices is the AD9250-FMC-250EBZ includes JEDEC JESD204B standard data converters providing four 14-bit A/D converter channels at 250MSPS in an FMC-compliant form factor.

The two on-board AD9250 A/D converters…

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Semikron gate driver for parallel IGBTs

Semikron’s latest gate-drive unit is designed for use with interleaved, multilevel and parallel IGBT circuits.

The Skyper 42 LJ is a dual-channel IGBT driver unit for 600V, 1,200V and 1,700V IGBT modules.

It controls IGBT modules up to 1,000A with an output current of…

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LEM current transducers measure 150A (rms)

LEM has introduced the LA 130-150 series of current transducers for use in motor drives, inverters, power supplies and general industrial applications.

The PCB-mounted devices will measure nominal full-scale currents of 130 and 150A (rms).

The LA 130-150 series measures DC, AC, and pulsed currents, providing…

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Maxim gauges Li-ion cells without coulomb counting

Altera details 0.35µm CPLD Richard Wilson Altera continues to up the technology specifications in the complex programmable logic (CPLD) market with details of its first 0.35µm four layer metal device, which it claims will support densities up to 250,000 gates. While admitting that the large…

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Reduced stress in tall ceramic caps means smaller footprints

Syfer of Norwich has developed a way to reduce internal electro-mechanical stresses in thicker and larger multilayer ceramic components, increasing consistency and reliability. The result, claims the firm, is real estate-saving chip capacitors and EMI filters, especially high voltage types. Its first products are X7R multilayer chip capacitors…

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Linear power chip has eight regulated channels

Linear Technology’s latest power management IC for low voltage power supplies has eight independent 1A channels with I2C control, sequencing and fault monitoring in a QFN package.

Each channel has a synchronous step-down regulator with independent 2.25V to 5.5V input supply and an output voltage range…

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Linear DC-DC converter’s output disconnect stops inrush

Linear Technology has introduced a 3MHz current-mode, synchronous boost DC-DC converter with integrated output disconnect.

Its internal 2.5A switches deliver output voltages as high as 15V from an input voltage range of 1.8V at start-up (0.5V when running) to 5.5V. This makes it…

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ON Semi 1.6A Li-ion battery charger

ON Semiconductor’s programmable Lithium- Ion (Li-Ion) switching battery charger has a 1.6A charging capability.

The device is small enough for integration in USB compliant input supplies and it can complete a full charge cycle of a 1650mAh, 4.2V Li-Ion battery in 90 minutes.

The NCP1851…

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Linear low noise differential buffer amp

Linear Technology has a differential buffer amplifier with only 1.5nV/?Hz output-referred noise.

The LTC6417 is capable of driving a differential 50ohm load and is designed for driving 14- and 16-bit pipeline ADCs. It can be DC- or AC-coupled at its inputs, and achieves excellent distortion…

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