Power
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.
Huawei P9 smartphone uses Intersil’s regulators
Intersil has announced the adoption of the company’s ISL91110 switching regulators in Huawei’s P9 smartphone. The buck-boost switching regulator supplies power to key system peripherals in the P9 dual-camera smartphone, using a proprietary, fully synchronous four-switch architecture. This advanced architecture enables the seamless transition from buck to boost and delivery of up to 2.5A output current at the lowest single-cell Li-ion ...
12 & 20V MOSFETs offered in dual asymmetric package
Vishay Intertechnology has announced what it claims to be the industry's first AEC-Q101-qualified 12 and 20V MOSFETs in a dual asymmetric power package. To save space and power in high-efficiency synchronous buck converters for automotive applications, the SQJ202EP and SQJ200EP n-channel TrenchFET devices each combine a high- and low-side MOSFET in the compact 5x6mm PowerPAK SO-8L dual asymmetric package.
SiC MOSFETs meet high temperature environments
Designed for faster switching, high temperature power conversion topologies and systems, a silicon carbide (SiC) MOSFET from TT Electronics has a maximum junction temperature of 225°C. The package has a higher ambient temperature capability and can therefore be used in applications, including distribution control systems with greater environmental challenges, such as those in close proximity to a combustion engine, says the company.