Power

Power electronics is a key element in the world of electronic design and engineering and electronic engineers need to have a thorough understanding of this area if they’re going to create successful products.

In this section, New Electronics keeps designers up to date with the latest developments in the power electronics market – everything from DC/DC converters to IGBTs to battery technology. In fact, New Electronics covers any power product that can go on a PCB.

650V integrated half bridge for smaller power adaptors

Dialog Semiconductor has developed a monolithic 650V GaN half bridge which integrates a high side and low side power switch together with drivers, level shifting, protection as well as analogue and logic components. The power device is said to switch at more than 50V/ns.

Fairchild launches SuperFET III MOSFET family

Fairchild Semiconductor has introduced its SuperFET III family of 650V N-channel MOSFETs which are said to meet the higher power density, system efficiency and reliability requirements of the latest telecom, server, electric vehicle (EV) charger and solar products.

Current sensing optocoupler for servo drives and motors

An optically isolated sigma-delta modulator, the Avago ACPL-C799 from Broadcom, claims to convert an analogue input signal into a high-speed data stream with galvanic isolation. It features a low differential input range of ±50mV, allowing designers to reduce power dissipation across a current-sensing shunt resistor in servo drive and motor applications.

650W medical power supply range

Artesyn Embedded Technologies has announced a wide input, single output series of medical power supplies. Featuring a standard 4 x 6in footprint, devices in the CNS650-M range are said to deliver 650W with forced-air cooling (750 W peak) or 400W with convection cooling (650 W peak). No load consumption is said to be less than 500mW.

Battery charger handles lead acid and Li-ion

An integrated, high voltage synchronous step down battery charger controller from Linear Technology uses temperature compensated three and four stage algorithms to charge 12V and 24V lead acid batteries. The part can also charge a multicell lithium-based battery stack with float voltages near to the input supply.

Power supplies for Industry 4.0 applications

Four power supplies from Powerbox are intended for use with Industry 4.0 applications. Additions to the company’s Industrial Line, the four products feature LLC resonant technology, synchronous rectification, active power factor correction (PFC), low leakage current and energy optimisation.

USB-C solutions supporting USB power delivery 3.0

Cypress Semiconductor has announced that its USB-C controller portfolio is now able to support the latest USB Power Delivery (PD) 3.0 specification enabling improved end-to-end power delivery and charging solutions for laptop and mobile devices.

Buck regulator generates 0 to 14.5V VOUT

The LTC3623 from Linear Technology is a ±5A high efficiency, current mode synchronous buck regulator whose output is adjustable from 14.5V to 0V. The regulator uses a 50µA current reference, combined with a single resistor, to set the output voltage for all of the regulators.

µModule regulator with a common heat sink

The LTM4631, a dual 10A or single 20A µModule step-down regulator from Linear Technology, is available in a 1.91mm LGA package measuring 16 x 16mm. The LTM4631 can be placed on a PCB, close to its load, such as an FPGA, whilst sharing one heat sink.

Buck-boost regulators for battery powered portables

The ISL91127 and ISL91128 buck-boost regulators from Intersil feature 4.5A switches, 96% efficiency, and a compact footprint suitable for system power or powering the peripherals in battery-operated devices. They are said to offer the industry’s lowest quiescent current of 30µA for superior light load efficiency.

Eight-channel DC/DCs for multi-rail systems

The LTC3374A from Linear Technology is a highly integrated general-purpose power management solution for systems requiring multiple low voltage power supplies. The device can be configured to provide two to eight independent regulated outputs with 15 possible output current configurations and is suitable for a variety of multichannel applications, including industrial, automotive and communications systems.

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