Phase shift full-bridge SMPS is massively over-hyped? – The Phase Shift Full Bridge (PSFB) converter is a hoax. The LTspice simulation (Editor’s note: see post for file) of a “plain” full-bridge SMPS bears this out. PSFB claims to be able to reduce switching losses compared to the “plain” full-bridge SMPS. However, the PSFB does have turn-OFF switching losses, just […]
Power Supplies
Power MOSFETs come in smaller packages
Fairchild, a global supplier of high-performance semiconductor solutions, launched its industry-leading mid-voltage MOSFET technology in a Dual Cool™ 8mm x 8mm package. The new Dual Cool 88 MOSFET gives power conversion engineers a first-of-its-kind alternative to bulky D2-PAK packages at half the size and with higher power density, superior efficiency and better cooling via air flow […]
Continuous 225W at natural convection from 3×5″ medical type BF power supply
Powerbox, one of Europe’s largest power supply companies, and for more than three decades a leading force in medical power supplies, introduces new Medline 225 series AC/DC single output open frame converters for medical type BF applications. The new OFM225 with its 3 x 5” footprint and 1.5” height is designed for a continuous output […]
D1U54 series AC & DC input models available to 1200WATT
Murata announced the D1U54-D-1200 series of DC-input front end power supply modules from Murata Power Solutions. This 1000VRMS isolated power supply provides a 12Vdc output at 1200 Watts, with a standby voltage at up to 20 Watts of power. With a power density of 28 watts per cubic inch, the slim 54.5mm (2.15“) width and […]
Power supply noise rejection – Technical Brief
Many of the problems facing PCB designers today are related to power supply noise. There are guidelines that can be used to solve simple issues, but, for more complex issues it is essential to understand and consider all the parameters which will help in providing an optimal and clean solution. This technical brief describes the […]
New Wide Input Voltage, Synchronous Buck Regulator ICs for USB Charging
Allegro MicroSystems, LLC expands its automotive regulator portfolio by adding two devices targeted specifically at USB power applications. Allegro’s A8652 and A8653 devices are high output current synchronous buck regulator ICs that provide tight load regulation over a wiring harness without the need for remote sense lines. This remote load regulation is achieved with an […]
Contactors handle 4 kA in-rush, 600 A continuous
TE Connectivity (TE) announces its new KILOVAC KHR500 (Bubba II) high-voltage, high-rupture, 600 AMP contactor that is smaller, lighter, and switches significantly higher power than its predecessor, the EV500 (Bubba I). It is capable of handling inrush currents as high as 4000 A. The new contactors are hermetically sealed for use in harsh and explosive […]
High Temperature, High Accuracy Resolver-to-Digital Converters
Data Device Corporation (DDC), introduces a new High Temperature Resolver-to-Digital Converter (RD-1930X), offering an off-the-shelf, high reliability motion feedback solution for today’s rugged, high temperature applications. Resolver-based motion feedback systems offer inherent environmental advantages over optical encoders that are vulnerable to humidity, dirt, oil, grease and vibration. DDC’s RD-1930X resolver-to-digital converter offers additional environmental advantages, […]
GlobTek’s level VI compliant medical and ITE power supply / charger
GT-43086-WWVV-X.X-Q Model is an addition to GlobTek’s Level VI compliant GT-43086 family and represents GlobTek’s 6 Watt wall plug-in series of AC/DC adapters (power supplies & chargers) with International Interchangeable blades. GlobTek’s changeable input blade system with individual field replaceable input plugs, including: North America / Japan NEMA 1-15P, Australian, UK BS 1363, European CEE […]
Mitsubishi Electric Automation takes VFD Technology into 600-Volt regions
Engineering and plant managers in regions where the main power supply is 575-600 volts can now harness the performance benefits of Mitsubishi Electric’s inverter technology with the introduction of the A860 Series variable frequency drive (VFD). A 600-volt version of the proven A800 Series all-in-one VFD, the new A860 Series inverter combines traditional induction and […]