Power Supplies News

Murata power supply provides 12Vdc output at 1,200W

Murata has announced DC-input front end power supply modules with a 1,000VRMS isolated power supply providing a 12Vdc output at 1,200W with a standby voltage at up to 20W. With a power density of 28W per cubic inch, 54.5mm (2.15-inch) width and 1U height…

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Buck converter draws only 180nA

Industry’s highest ultra-light-load power conversion efficiency, is Analog Devices’ claim for its latest buck converter – no load quiescent current through the ADP5301 is an impressive 180nA. Depending on input and load, this can mean >90% efficiency across 5µA to 50mA output. It also offers a…

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Compact 3W switching power supplies from Minimax

Minimax has launched 3W switching AC-DC power supplies in an encapsulated PCB mount package featuring measuring 1x1x0.64-inches The AAF-03 series are a cost effective solution for space critical applications in consumer appliances, instrumentation and communication equipment, the company says. It series consists of six models featuring…

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Intersil protects and controls Li-ion batteries for scooters

Intersil has announced a battery pack monitor/protector for 3-8 cell Li-ion cells, which also works with other battery chemistries. Inteded for medium-power applications – mobility scooters, wheelchairs, e-bikes, hand tools, and vacuum cleaners; ISL94203 includes cell-by-cell control of external mosfet-resistor pairs for active…

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Power supply will operate at -40 deg C

Recom’s latest 2 or 3W power supply modules have extended operating temperature range own to -40°C. The RAC02-SE/277 and RAC03-SE/277 modules have an input voltage range of 85-305Vac (120-430Vdc) and are available with output voltages of 3.3, 5, 12 and 24Vdc…

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Boost converter will deliver 15V from 500mV

Linear Tech has introduced a boost converter that starts from 1.8V minimum, but will run with inputs from 0.5-5.5V. It is synchronous, with 1.5A switches, delivering up to 400mA at 12V from 5V. “Its 1.5A current limit makes it well suited for input current…

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Digital power chip gets PWM signalling feature

Linear Technology has added a three-state PWM signalling feature to its LTC3887 range of dual output synchronous step-down DC/DC controllers with I²C-based PMBus interface. The intention of adding the PWM signal is to support the use of DrMOS, power blocks or similar power stages. The…

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USB charger chip for automotive has extra protection

Allegro MicroSystems has introduced two USB charger chips specifically for vehicle use. A8652 and A8653 are automotive qualified and regulate input voltages from 4.0 to 36V – with under-voltage lock-out at 2.6V. There is no magic here, it is a buck converter so when used for USB…

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