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LATEST NEWS / Si / SiC / WBG1 Min Read
BYD honored United Nova Technology (formerly known as Semiconductor Manufacturing Electronics (ShaoXing) Corporation) with “Special Contribution Award” on BYD NEV (New Energy Vehicle) Core Supplier Convention 2023 for being a highly reliable partner in terms of quality and delivery capability.
Since 2021, UNT has engaged in broad cooperation with BYD in multi domains, including power devices such as SiC MOSFET, IGBT, and silicon-based MOSFET, as well as power modules and analog IC for automotive industry.
With the deepening of cooperation, UNT’s products have entered BYD’s ocean series and dynasty series on a large scale. In 2023, the SiC MOSFET manufactured by UNT have been widely installed in BYD’s electric vehicles. Being awarded the “Special Contribution Award” is a full recognition of the continuous contribution and outstanding performance of UNT.
In the future, UNT will continue to deepen its close cooperation with global customers such as BYD, promote technology innovations, and provide customers with more efficient and low-energy consumption solutions to support the vigorous development of the green energy.
Original – United Nova Technology
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LATEST NEWS / PRODUCT & TECHNOLOGY / Si3 Min Read
Alpha and Omega Semiconductor Limited announced the release of two αMOS5™ 600V FRD Super Junction MOSFETs. αMOS5™ is AOS’s market and application-proven high voltage MOSFET platform, designed to meet the high efficiency and high-density needs of servers, workstations, telecom rectifiers, solar Inverters, EV charging, motor drives and industrial power applications.
The design of today’s mid-high power switched-mode power supply (SMPS) and solar inverter systems boil down to four major challenges – higher efficiency, higher density, lower system costs, and uncompromised robustness. High Voltage Super Junction MOSFETs are dominant the choice for topologies such as single/interleaved/dual boost/CrCM TP PFCs, LLC, PSFB, multi-level NPC/ANPC and so forth.
αMOS5™ has been the leading High Voltage Super Junction solution tailored for fast switching, ease-of use and robustness in mission-critical applications. αMOS5™ FRD FETs are engineered with strong intrinsic body diode to handle hard commutation scenarios, when the freewheeling body diode is in reverse recovery due to abnormal operations, such as short-circuit or start-up transients.
The two products released, the AOK095A60FD (TO-247) and AOTF125A60FDL (TO-220F), are 600V FRD FETs with 95mohm and 125mohm maximum Rdson, respectively. In tests conducted by AOS engineers, the body diodes of these two FRD FETs have survived high di/dt, under abnormal system conditions, even at elevated junction temperatures of up to 150°C. Additionally, AOS tests have shown that these devices’ turn off energy (Eoff) are noticeably lower than the competition’s, which contributes to higher efficiency in light or mid-load conditions.
“We defined our products for traditional power supplies, as well as DC/DC and DC/AC converters of solar inverters and ESS systems, where bi-directional topologies are needed. As energy storage-ready inverters become the trend and high voltage batteries are utilized increasingly in AC-coupled systems, the AOK095A60FD and AOTF125A60FDL will become industry leading solutions for bi-directional DC/DC and inverter/PFC applications that serve a wide range of power supplies, solar PV inverters, and ESS hybrid converters,” said Richard Zhang, Senior Director of Product Line and Global Power Supply Business at AOS.
Technical Highlights
- Rugged, fast recovery diode (FRD) with reduced Qrr for demanding use cases
- Engineered for both hard and soft switching topologies with ultra-low switching loss
- Strong UIS and SOA capabilities
- Engineered to prevent self turn-on
- Suitable for LLC, PSFB, CrCM Totem-Pole, Multi-level NPC and CrCM H-4/Cyclo Inverter applications
Original – Alpha and Omega Semiconductor
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LATEST NEWS / PRODUCT & TECHNOLOGY / Si2 Min Read
Alpha and Omega Semiconductor Limited (AOS) announced the release of its state-of-the-art automotive TO-Leadless (TOLL) package for the company’s automotive grade 80V and 100V MOSFETs. AOS’s TOLL package is developed to optimize the company’s power semiconductors as essential components in the evolution of e-mobility such as 2- and 3-wheel and other light vehicles. This new package helps designers meet the ongoing trend to electrify vehicles with the latest battery technology to meet clean energy zero-emission goals.
These capabilities make AOS 80V and 100V MOSFETs ideally suited for automotive BLDC motor and battery management applications for e-mobility. The AOS automotive TOLL package is designed to achieve the highest current capability using AOS’s innovative approach which utilizes advanced clip technology to achieve a high in-rush current rating.
In addition, AOS TOLL packaging with clip technology offers a very low package resistance and inductance, enabling improved EMI performance compared to other TOLL packages utilizing standard wire-bonding technology. With the combination of low ohmic and high current capability, utilizing AOS TOLL packaging also allows designers to reduce the number of parallel MOSFETs in high current applications. This, in turn, helps to enable higher power density requirements without compromising reliability in applications where robustness and reliability are key design objectives.
Providing a more compact solution for space-constrained designs, the AOTL66810Q (80V) and AOTL66912Q (100V) have a 30 percent smaller footprint compared to a TO-263 (D2PAK) package. These new devices in TOLL packaging are qualified to AEC-Q101, PPAP capable, and are manufactured in IATF 16949 certified facilities making them ideally suited for demanding application requirements in e-mobility. AOS TOLL devices are also compatible with automated optical inspection (AOI) manufacturing requirements.
“Using the AOS Automotive TOLL package with clip technology offers significant performance improvements in a robust package. The advanced technologies in our AOTL66810Q and AOTL66912Q MOSFETs will help simplify new designs allowing them to reduce the number of devices in parallel while providing the necessary higher current capability to enable overall system cost savings,” said Peter H. Wilson, Marketing Sr. Director of MOSFET product line at AOS.
Part Number VDS (V) VGS (±V) Continuous Drain Current (A) Pulsed Drain Current (A) RDS(ON) Max (mOhms) @10V @25°C @100°C @25°C AOTL66810Q 80 20 445 247 1780 1.25 AOTL66912Q 100 20 370 269 1480 1.7 Original – Alpha and Omega Semiconductor
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ROHM has expanded the library of SPICE model lineup for LTspice® of its circuit simulator. LTspice® is also equipped with circuit diagram capture and waveform viewer functions that make it possible for designers to check and verify in advance whether the circuit operation has been achieved as designed.
In addition to the existing lineup of bipolar transistors, diodes, and MOSFETs, ROHM has added SiC power devices and IGBTs that increases its number of LTspice® models to more than 3,500 for discretes (which can be downloaded from product pages). This brings the amount of coverage of LTspice® models on ROHM’s website to over 80% of all products – providing greater convenience to designers when using circuit simulators that incorporate discrete products, now including power devices.
In recent years, the increasing use of circuit simulation for circuit design has expanded the number of tools being utilized. Among these, LTspice® is an attractive option for a range of users, from students to even seasoned engineers at well-known companies. To support these and other users, ROHM has expanded its library of LTspice® models for discrete products.
Besides product pages, ROHM has added a Design Models page in October that allows simulation models to be downloaded directly. Documentation on how to add libraries and create symbols (schematic symbols) is also available to facilitate circuit design and simulation execution.
Going forward, ROHM will continue to contribute to solving circuit design issues by expanding the number of models compatible with various simulators while providing web tools such as ROHM Solution Simulator to meet growing customer needs.
Original – ROHM
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LATEST NEWS / PRODUCT & TECHNOLOGY / Si2 Min Read
The ever-increasing power demand in data centers and computing applications requires advancements in power efficiency and compact power supply design. Infineon Technologies AG responds to trends on the system level by introducing its new OptiMOS™ 7 family, industry’s first 15 V trench power MOSFET technology. The OptiMOS 7 15 V series primarily targets optimized DC-DC conversion for servers, computing, datacenter, and artificial intelligence applications.
The product portfolio includes the latest PQFN 3.3 x 3.3 mm² Source-Down, with bottom- and dual-side cooling variants in standard- and center-gate footprints. The portfolio also includes a robust PQFN 2 x 2 mm² variant with a reinforced clip. The OptiMOS 7 15 V technology is specifically tailored for DC-DC conversions with low output voltages, particularly in server and computing environments. This advancement aligns with emerging shifts towards high ratio DC-DC conversion in data-center power distribution.
Compared to the established OptiMOS5 25 V, the new OptiMOS 7 15 V achieves a reduction of R DS(on) and FOMQ g by ~30 percent, and FOMQ OSS by ~50 percent by lowering the breakdown voltage. The PQFN 3.3 x 3.3 mm² Source-Down package variants provide a more versatile and effective PCB-design. Furthermore, the PQFN 2 x 2 mm² package provides a pulsed current capability higher than 500 A and a typical R thJC of 1.6 K/W.
By minimizing conduction and switching losses and incorporating advanced packaging technology, thermal management becomes easy and effective, setting new benchmarks both for power density and overall efficiency.
Original – Infineon Technologies