Power

Infineon has put 650V mosfet die from its CFD7A portfolio into a surface-mount package with “improved electrical performance over the well-known TO247 through-hole devices, thus enabling efficient energy utilisation in onboard chargers and dc-dc converters”, it said. ‘QDPAK TSC’ is a top-side-cooled package (see images) announced earlier this year and now registered with JEDEC – at the same time it ...

Infineon is putting 1,200V and 2,000V SiC mosfet half bridges into 62mm module packaging. “The package enables the use of SiC for mid-power applications from 250kW, where silicon reaches the limits of power density with IGBT technology,” according to the company. “Symmetrical internal package design provides identical switching conditions for the upper and lower switches.” For speedy replacement, the main ...

Toshiba has launched its first 30V n-channel common-drain dual mosfet, for controlling bi-directional power flow in USB-connected devices. The USB Power Delivery standard supports power levels from 5V 3A to 48V 5A, and allows swapping of the power supply and receiving side, requiring devices with USB charging to support bi-directional power. In developing a 30V common drain mosfet, called SSM10N961L, ...

The rise in popularity of electric bikes and two-wheelers has brought to focus the need for increased safety requirements. By Vashist Bist and Shashank Wekhande. The choice of battery greatly affects the design of an electric two-wheeler (E2W). Lithium-iron-phosphate (LiFePO4) batteries provide a stable chemical and thermal chemistry, better safety (no thermal runaway) and lower manufacturing cost compared to Li-ion ...

Vox Power has announced a set of conduction-cooled 300W dc-dc converters, for railway and other rugged environment use. Measuring 188.6 x 116 x 25.4, the 33.6 to 160V input range is intended to cover 48, 72, 96 and 110 V railway batteries. Dips to 28.8V can be ridden through covered for 100ms, complete drop-outs for 10ms, and 168V peaks for 1s. ...

Power IC company Cambridge GaN Devices (CGD) has signed a deal to develop power adapters and data centre PSUs with Chicony Power Technology of Taiwan, and Cambridge University Technical Services (CUTS). “Chicony Power is one of the leading SMPS manufacturers in the world, so this agreement represents an incredible milestone in CGD’s journey,” said CGD CEO Giorgia Longobardi. “Chicony Power ...

Electrocube has created a series of metallised polypropylene film capacitors for high power inverters in military and commercial, land and sea, applications. Voltage ratings of 400, 600 and 1,000V are available, and capacitances from 100nF to 10μF, plus 15 and 20μ in the 400V range “Able to handle high surge currents without degrading, Electrocube’s 985B is a rugged, non-inductively wound ...

Power supply company Pulsiv has developed a graphical technique – a nomogram – to determine critical transformer parameters for fly-back converters operating in discontinuous conduction mode. “This intuitive tool can replace more complex equation-based methods, providing a fast and accurate visual process for identifying primary side inductance and minimum duty cycle,” according to the company. How to use it: Find ...

Designed for work in circuits with varied voltage levels. Until recently, a very common problem faced by electronic circuit designers was the difference in supply voltage standards between microcontrollers (e.g. 3.3 V) and peripheral ICs (e.g. 5 V). In order for them to operate together, the use of additional voltage translators was required, which made the device more complicated and ...

Cosel has used GaN transistors, planar magnetics and a modified fly-back topology to shrink a family of dc-dc power supplies. Called the TE series, the new supplies come in 45W (TECS45F and TEPS45F) and a 65W (TECS65F or TEPS65F) forms. TEPS versions have connections brought out to PCB pins and have a 1 x 2.3inch footprint, while TECS parts (right) ...