Vishay Siliconix has claimed a new milestone in optimising MOSFETs for core voltage DC-to-DC power conversion with the release of two advanced LITTLE FOOT devices.
Latest in the Vishay Siliconix portfolio of solutions for DC-to-DC converters, the new devices are a synchronous low-side power MOSFET (Si4362DY) and a control high-side power MOSFET (Si4892DY) that deliver leading performance when used together in single or multiphase power supply circuits for notebook computers and game stations.
With an exceptionally low on-resistance rating of 6,25 mOhm at a 4,5 V gate drive the new Si4362DY is optimised for low-side operation, reducing conduction losses and so boosting efficiency. Optimised for high-side operation, Siliconix' Si4892DY features a very low typical gate charge of 8,7 nC, minimising switching losses, and on-resistance of 20 mOhm at a 4,5 V gate drive.
The new low-side Si4362DY also features a gate-drain-to-gate-source charge ratio of 0,6 and a very low gate resistance of 1,3 Ohm, both characteristics that help to prevent 'shoot-through' conditions where both the high- and low-side MOSFETs are 'on', creating a short from input voltage to ground.
Improving on its predecessor, the Si4894DY, the new Si4892DY features a lower gate resistance of 1 Ohm, a 30% better on-resistance times gate charge product of 139,2, and faster turn-on times. The device's low switching losses and higher speeds combine to provide higher efficiency control.
Working together, the two 30 V MOSFETs can provide increased efficiency, longer run times, and cooler operation. The devices' low gate-drain-to-gate-source charge ratio allows designers to use less-expensive MOSFET drivers in end products.
Video Reel: Microchip’s SAM L11 30 June 2020, Altron Arrow
, Multimedia, Videos
This video (www.dataweek.co.za/*jun20-sam) provides a brief overview of Microchip Technology’s SAM L11 comprehensive security solution framework and demos to make implementation of security simple. Microchip’s ...
Read more...Dual-core wireless MCU 30 June 2020, Altron Arrow
, Telecoms, Datacoms, Wireless, IoT
The STM32WBx0 is a dual-core wireless MCU based on an Arm Cortex-M4 core running at 64 MHz (application processor) and an Arm Cortex-M0+ core at 32 MHz (network processor).
The STM32WBx0 Value Line ...
Read more...MIFARE DESFire EV3 IC 30 June 2020, EBV Electrolink
, Telecoms, Datacoms, Wireless, IoT
NXP Semiconductors announced its new MIFARE DESFire EV3 IC that ushers in next-generation performance, advanced security and seamless integration of mobile services for a new era of security and connectivity ...
Read more...USB Type-C power delivery controller 30 June 2020, CST Electronics
, Power Electronics / Power Management
The MAX77958 from Maxim Integrated is a robust solution for USB Type-C CC detection and power delivery (PD) protocol implementation. It detects connected accessories or devices by using Type-C CC detection ...
Read more...Driver for low-current LED strips 30 June 2020, Altron Arrow
, Opto-Electronics
Infineon Technologies’ new BCR431U is a constant-current linear LED driver IC providing low voltage drop performance for regulating LED current. It is the second device released in the new-generation ...
Read more...Lead-acid batteries: quality versus cost 30 June 2020, Forbatt SA
, Power Electronics / Power Management
While many battery technologies have come to the forefront, lead-acid has remained the most well-known and cost-effective chemistry. Gel and AGM technologies have revolutionised this technology even further. ...
Read more...Fanless 600 W power supplies 30 June 2020, Vepac Electronics
, Power Electronics / Power Management
XP Power has released a new series of convection cooled, 600 W AC-DC power supplies. The ultra-compact power supplies deliver full load power under a wide range of conditions without additional cooling. ...
Read more...IGBT for 1500 V PV string inverters 30 June 2020, Altron Arrow
, Power Electronics / Power Management
The solar power market is undergoing a trend towards 1500 V solutions, which allow for more series connections, less cable, fewer generator connection boxes and fewer inverters.
The new EasyPACK 3B ...
Read more...DIN-rail mounting DC-DC converters 30 June 2020, Avnet South Africa
, Power Electronics / Power Management
Shortly after unveiling the brand-new DIN-rail mounting DC-DC converter family, the DDR-15/30/60/120/240 series, Mean Well has announced the DDR-480 series (480 W) to enable integration into higher-power ...
Read more...The revolution of LTO battery technology 30 June 2020
, Power Electronics / Power Management
Potential applications of LTO technology include solar and alternative energy storage, heavy motor vehicle and industrial applications, as well as power sources for remote communication systems.
printer friendly version