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400-W, 12-V Eval Board Accelerates Design of Eco-Certified Power Supplies
Stmicroelectronics’EVL400W-EUPL7evaluation board implements a royalty-free reference design for a ready-to-use 400-W, 12-V power-supply solution that meets the ENERGY STAR Version 6.1 requirements for computers and many other of today’s toughest eco-design requirements. Able to adhere to global eco-standards while operating on a wide range of ac inputs (90 to 264 V; 45 to 65 Hz), the EVL400W-EUPL7 provides a compact, cost-effective solution for applications such as ATX supplies, small servers and workstations, medical equipment, signage, and LED panels.
The supply is based on ST’s SRK2001 synchronous-rectification control, L4984D current-mode power-factor-correction (PFC) controller, and L6699 resonant half-bridge controller. With the SRK2001 synchronous-rectification controller, the supply can achieve high average and typical efficiency across a wide load range. In addition, a much smaller heatsink can be used on the secondary-side power device. The SRK2001's integrated active high-voltage startup circuitry, designed for use with a depletion MOSFET, reduces the residual consumption in normal operation to a negligible level and ensures a fast startup time.
Both the L4984D and L6699 support burst mode, allowing the board to achieve high efficiency at light loads and eliminate the need for an auxiliary switched-mode power supply (SMPS). In addition, the L6699’s self-adaptive dead-time function further reduces primary current draw.
Thanks to these features, the reference design can deliver a full-load efficiency greater than 93% at 230 V ac and over 91% at 110 V ac, with a no-load mains consumption of less than 0.150 W. In turn, it’s able to meet ENERGY STAR Version 6.1 requirements for computers, European EuP Lot 6 Tier 2 requirements for household and office equipment, and CoC (Code of Conduct) Version 5 Tier 2 for external power supplies. The EVL400W-EUPL7 has also achieved清理1Plug Load Solutions 80 PLUS2认证，在115 V AC和230 V AC的金处额定铂。
The EVL400W-EUPL7 is available to order now at the budgetary price of $180.00. Please visithttp://www.st.com/evl400w-eupl7-pr了解更多信息。
1Cleasult是北美最大的节能计划和服务提供商。
280 Plus性能规范由Energy Star引用。它要求计算机和服务器中的多输出电源在20％，50％和100％的额定负载率为0.9或更高的情况下为80％或更高的能源效率。
Smart Power to the People? An Insider Weighs in on Next-Gen Energy Meters
即使对于那些不直接参与智能能量表的人，他们的越来越多的存在可能会对许多与电力相关的产品以及设计和制造它们的人产生重大影响。至少，许多设备，电动电动机充电器，照明和HVAC元素以及工业设备必须纳入采用公用事业和智能计量行业的连接和管理协议。
但是，智能功率功能将成为与电力相关设备的基本要求多长时间？哪些连接技术将主导市场？其中一些答案可以在“持续力量：下一个一代智能能量表正在上升，”北欧半导体公司业务发展经理Lorenzo Amicucci撰写的信息丰富的专栏文章。
According to Amicucci, the rapid adoption of smart metering is a foregone conclusion "being driven by the utility companies themselves, as they continue to invest in grid intelligence, security and edge computing technologies that will improve their operational efficiencies and reduce costs." His assertion is affirmed by, among other things, a report from Navigant Research that predicts smart meters will be installed in 6 out of 10 homes worldwide by 2028.
However, when it comes to the technology that will connect smart meters to the grid, the loads they serve, and the functionality they will support, the future is a tad less certain. Amicucci says that,“对于仪表到消费者的连接，没有一个协议主导，Wi-Fi，蜂窝，线，Zigbee和蓝牙LE解决方案均被吹捧。”为了进一步了解驱动智能能源计量的力量以及他们将支持的应用程序，click here to see the complete blog。
IGBT功率模块：较高的输出，中型EV牵引力较低的损失
Infineon技术introduced theHybridpack DC6I, anIGBT power module根据需求量身定制electric-vehicle traction invertersin the 80- to 100-kW power class. This six-pack module, based on the company’s proven EDT2 IGBTs, is optimized to provide improved performance and reduced manufacturing costs to hybrid and small battery electric vehicles.
Infineon利用其在高级包装技术和热管理中的经验来创建与Hybridpack 1的7.2-×14 cm外形相匹配的第二代模块，同时提供50％的功率输出和降低光功率损失20％。此外，新模块采用低敏感设计，该设计使用六个螺钉连接器到DC-Link电容器，以降低其散落的电感15 nh。
The DC6i's packaging has been designed specially to support efficient high-volume automated production. It incorporates press-Fit pins and additional guiding elements that eliminate the need for time-consuming selective soldering, enabling the gate-driver board to be mounted in a few seconds. Thermal management is handled by Infineon’s direct-cooling wave baseplate, which offers a thermal resistance of only 0.17 K/W between the IGBT chip junction and the cooling fluid.
新的HybridPack DC6I根据AQG324的汽车功率模块的AQG324规范具有完全资格www.infineon.com/DC6i。
65-W，基于GAN的QR充电器参考设计提高了效率，降低了EMI
gan系统' 新的reference designfor a high-power-density 65-W quasi-resonant (QR) charger offers high efficiency and enhanced EMI performance for消费类电子产品applications like mobile phones, tablets, and laptop computers. The GaN devices used in the charger feature high switching speed, low on-resistance, and zero reverse recovery, enabling the design to meet growing consumer demand for smaller, lighter, more energy-efficient, and faster-charging devices. The reference design includes an operating evaluation unit and all of the design documentation needed to fine-tune the design to a particular application's requirements and optimize it for rapid, low-cost production.
Key Details:
- Input: 90-265V, ~ 50/60Hz
- Output: USB-C 5V3A, 9V3A/12V3A/15V3A/20V3.25A 65W max
- EMI: CISPR22 Conduction and Radiation Class B
- 用外壳的功率密度：18.5 w/in。3
- 支持PD3.0，PPS，QC，QC4.0+，BC1.2
- 全面的保护:OVP, (OCP, SCP和开放loop
GAN Systems表示，这些功能将使客户能够从更少的重新设计，更少的PCB Respins和较少前往实验室进行测试的旅行中受益。开发时间的减少使公司有可能加速推销新产品的时间。
Download the reference design guidehereor visit GaN Systems’设计中心以获取其他资源。
