Power

Cork-based Excelsys has announced a user-configurable mains power supply with a five year warranty. Up to 12 outputs and 1,200W are available from a 1U format. “It is the only five year warranty power supply,” said Excelsys sales director Dermot Flynn. The product, called UltiMod, is aimed at high-reliability applications like MRI machines, wafer inspection, and transport, where total cost ...

Power Integrations has combined a two-switch-forward converter with a fly-back converter in a single package for power supplies that have to deliver up to 343W (586W peak) as well as an auxiliary supply. Called the HiperTFS-2 family, the main converter offers either 66 or 132kHz operation, and potentially over 90% efficiency. Its 175% peak power rating is a requirement of ...

Resistive current sensing can be superior to inductive current sensing for poly-phase metering, claims Cambridgeshire-based 42 Technology. Its method “can achieve better than 1% metering accuracy across the dynamic range from 100mA to 100A. The resulting system is completely immune to strong DC magnetic fields and offers isolation voltage up to 15kV. The approach also features a flat frequency response ...

Linear Technology has been addressing the problem of cells in batteries degrading at different rates so affecting the efficiency of the charging and discharging of the battery.

Europe has been slow to see the potential of power line communications, according to an executive at Singapore-based system supplier GridComm. “In Asia the technology is being utilised in many industrial and metering applications and we expect the market size to reach 1 billion units in 15 years” Stewart Gebbie sales director of GridComm. “Europe has been slow to take ...

Vincotech has released a line of H-bridge IGBT modules for solar inverter, power supply and welding applications up to 17kW. “These flowPACK 1 H modules feature high-speed IGBT H3s with up to 650V and ultra-fast freewheeling diodes. They are able to achieve an efficiency rate of up to 98.9% at around 2 kW,” said the firm. Part.-No. Voltage Current Comments ...

Aiming at automotive PSUs, Linear Technology has announced a 4A output, 3.4-42V input, synchronous step-down switching regulator which “reduces EMI/EMC emissions by more than 20dB, well below the CISPR 25 Class 5 limit,” claims the firm. It can switch at 200kHz to over 2MHz, is up to 96% efficient, and with burst mode can keep no-load quiescent current under 2.5µA ...

AMS has joined the firms offering cell balancing chips for electric vehicle Li-ion stacks. Its AS8506 can operate in both passive and active modes, and has a built-in balancing algorithm, cell monitoring and communication. Cell balancing allows the maximum capacity to be squeezed from a battery whose cells inevitable differ in capacity, particularly as they age. Passive balancing is simple ...

Avago has unveiled an automotive smart gate-drive opto-coupler for automotive power trains, claiming it to be the first to include an integrated fly-back controller to power the secondary-side gate drive. Called ACPL-32JT, is capable of 2.5A gate drive with a propogation delay of 250ns max. “The device features an integrated fly-back controller supporting regulated output voltage and a full set ...

The German government is putting €1.2m into GaN dc-dc converters – including tackling the inductor road block. It will be used in a three year project called ‘GaN-resonant’ whose goal is to develop a resonant 3kW GaN dc-dc converter operating “well above” 1MHz, said project partner German lab Fraunhofer ISE. “The simultaneous occurrence of extremely high switching frequencies and high ...