Power
Solid state relays allow significantly higher peak transient voltages
With four newly added H16WD_ series solid state relays, Schukat is expanding its range of Crydom electronic load relays in the hockey-puck housing, with screw terminals, for single-phase alternating voltages up to 690V. These load relays are equipped with thyristor outputs, allowing load currents of 25A, 50A, 75A and even 90A (RMS) at load voltages from 48VAC to 690VAC, and are controlled using DC control curren...
Top three things that can go wrong with event power
We are on the verge of festival season once again. That means that people up and down the country will be looking at their list of things to pack, checking off sleeping bags, wellies, toilet paper, and tickets.
China joins global drive for transformer efficiency
The trend for high efficiency transformers has now spread to China, according to CEEIA, placing pressure on Chinese transformer manufacturers, as well as their electrical steel, cable and coil winding equipment suppliers to effectively balance performance with cost.
Wide range non-isolated DC/DC converter series extended with new models
The introduction of two further models to the TDK-Lambda i6A series of step-down, non-isolated DC-DC converters has been announced by TDK Corporation. The i6A4W is capable of supplying currents of up to 20A, and the i6AN allows the creation of negative voltages delivering currents up to 8A.
Borophene could improve sodium-based batteries
Sodium-based batteries are a prospective alternative to lithium-based batteries due to the abundance and low price of sodium. However, finding a suitable anode material has been a longstanding hurdle to the commercialisation of sodium-based batteries. As the size of the sodium atom is much larger than lithium, many anode materials widely used in lithium-based batteries show poor performance in sodium-based batteries, most of which suffer from low...
High-speed gate driver for isolated drive applications with up to 4KV
A high-speed gate driver chipset that includes a logic interface (the IX6610) and a MOSFET/IGBT gate driver (the IX6611) has been announced by IXYS. The chipset is designed for pulse transformer isolated power conversion applications.
Optimising automotive pre-boost power supplies - part 2
Part one of this article described the problem, showed the impact of a cold start test pulse on an automotive power supply and discussed a typical pre-booster specification. This second part provides guidance on proper part selection of all relevant components. It also shows the reaction of a pre-booster on a cold crank test pulse and the impact of its error amplifier. By Matthias Ulmann, Texas Instruments.
Compact SMD inductors serve space constraints
Two power inductors from Würth Elektronik eiSos, the WE-PMMI and WE-PMCI, can be used in efficient DC/DC switching controllers where space is limited. They can be used in switching controllers and portable applications.
Dual channel MOSFET protects battery
Claimed to offer best-in-class source-to-source on-resistance (Rss on), the AOC3862 provides the lowest voltage drop and temperature rise in the protection circuit module, says Alpha and Omega Semiconductor. The common-drain 12V dual n-channel MOSFET has a low on-resistance, typical 2.38mΩ at 4.5V and 2.5mΩ at 3.8V gate drive gate drive.
Ruggedly designed 5kW power converter for harsh environments
The C/B 4800 Series of 6U DC/DC and AC/DC converter modules ranging in output power up to 5kW has been introduced by Schaefer.