CISSOID delivers robust gate drivers for XM3 SiC MOSFET power modules from Wolfspeed. Aimed at high power density converters, the new gate driver board safely drives the fast switching SiC power modules to achieve low losses and operates in high-temperature environments found inside space-constrained motor drives, compact power supplies or fast battery chargers. The CMT-TIT0697 […]
Ultra-thin bus switches save board space
Diodes Incorporated announced that its family of quad- and dual-channel are now available in an ultra-thin QFN (UQFN) package. The UQFN package makes it easier for OEMs to increase PCB density and reduce product dimensions when developing PC notebooks and tablets as well as networking and telecommunications equipment. Discrete logic devices, such as bus multiplexers […]
Magnetic design tool handles ferrite calculations
TDK Corporation announced its completely revised Magnetic Design Tool with enhanced functionality. The updated tool now enables the fast and easy calculation and graphical representation of application-related parameters for all EPCOS ferrite materials, including new materials for high-frequency switch-mode power supplies, and core shapes. The Magnetic Design Tool is available as a browser-based application and […]
Integrated active clamp flyback controllers target mobile phone, consumer product power supplies
Sianna Semiconductor, an ISO 9001 certified company, today announced that its SZ1101 and SZ1105 fully integrated active clamp flyback (ACF) controllers for designing high-power-density AC/DC power adapters are now fully qualified and in production. The SZ1101 33W version is suited for designing mobile phone travel adapters, while the SZ1105 65W version is suited for designing […]
Get ready for SiC-GaN combo power transistors
Researchers in Sweden have come up with a way of putting gallium-nitride transistor structures on a silicon-carbide substrate that potentially lowers the ON resistance of power FETs by an order of magnitude below that of commercial devices available now. The scientists hail from Sweden’s Linköping University and SweGaN, a spin-off company from materials science research […]
Electric locomotives and catenary power systems – Part 4: maintenance and corona
The high-speed all-electric railroad locomotive uses a catenary-wire system and pantograph power-transfer arrangement, which appears to violate good engineering practice and should not work. Still, it does, transferring hundreds of amps via a contact point moving at over 100 miles/hour. Part 3 looked at the pantograph and catenary power system in more detail. This part […]
Electric locomotives and catenary power systems – Part 3: power delivery
The high-speed all-electric railroad locomotive uses a catenary-wire system and pantograph power-transfer arrangement, which appears to violate good engineering practice and should not work. Still, it does, transferring hundreds of amps via a contact point moving at over 100 miles/hour. Part 2 of this article looked at power issues and numbers related to the […]
Auto-qualified driver ICs now available for 750 V-rated IGBTs
Power Integrations announced the launch of its automotive-qualified SID1181KQ SCALE-iDriver gate driver for 750 V-rated IGBTs. The new part expands the company’s range of auto-qualified driver ICs, following the introduction of the 1200 V SID1182KQ driver IC. Compact, efficient and highly robust, the new driver IC uses Power Integrations’ high-speed FluxLink communications technology to ensure […]
Electric locomotives and catenary power systems – Part 2: power needs
The high-speed all-electric railroad locomotive uses a catenary-wire system and pantograph power-transfer arrangement, which appears to violate good engineering practice and should not work. Still, it does, transferring hundreds of amps via a contact point moving at over 100 miles/hour. Part 1 looked at the basics of diesel-electric versus all-electric locomotives. This part looks at […]
Electric locomotives and catenary power systems – Part 1: basic functions
The high-speed all-electric railroad locomotive uses a catenary-wire system and pantograph power-transfer arrangement, which appears to violate good engineering practice and should not work. Still, it does, transferring hundreds of amps via a contact point moving at over 100 miles/hour.: There are four ways to power a railroad locomotive: via a steam engine (with a […]
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