オンセミ、厳しい効率規格に対応した大電力トーテムポールPFCコントローラの 新製品「NCP1681」を発表

Latest device reduces development time and cost allowing solutions to be delivered to market faster

PHOENIX – March 21, 2022 – onsemi (Nasdaq: ON), a leader in intelligent power and sensing technologies, introduced its latest mixed-signal controller dedicated to bridgeless totem pole PFC (TP PFC) topology. The NCP1681 targets ultra-high density offline power supplies. Building upon the success of theNCP1680, which is suited for designs up to 350 W, the new controller extends the power capability into the kilowatt range.

In the past, TP PFC designs required the use of an MCU that added design complexity and the need for coding. However, with the NCP1681, only a few external components and no coding is needed to be added for a fully-featured TP PFC solution, thereby saving time, cost and space.

Commenting on the new release, Robert Tong, Senior Vice President & General Manager of Computing and Cloud Division at onsemi said “The new NCP1681 extends the benefits of code-free TP PFC design into higher power. This allows our customers to continue to enhance the efficiency of their design while reducing design time and cost, thereby delivering solutions to market quickly.”

The NCP1681 can be configured to work in either fixed frequency continuous conduction mode (CCM) or multi-mode operation, where the controller naturally transitions between CCM and critical conduction mode (CrM) for optimal performance across power levels.

The new NCP1681 high power TP PFC controller integrates established control algorithms with novel features to deliver a high performance and cost-effective TP PFC solution. Challenging efficiency standards such as ‘80Plus’ or ‘CoC Tier 2’, that require high efficiency over a wide load range, can also be met.

The new NCP1681 is suited to higher-power power supplies from 350 W to several kilowatts range that operate on universal mains input (90 – 265 Vac), addressing a wide range of applications including server, high performance computing, telecom, industrial and OLED TV. At high line, NCP1681 TP PFC solutions will achieve close to 99% efficiency.

The NCP1681 will be demonstrated alongside the award-winning lower power (<300 W) NCP1680 at APEC 2022 , at the George R. Brown Convention Center in Houston, TX. The demonstrations can be found at onsemi’s booth (1124) from March 21 to March 23.

Alongside the TP PFC controllers, onsemi offers a wide range of SiC MOSFETs and isolated gate drivers that can be used for the fast leg of the totem pole. SiC MOSFET devices have low on resistance (RDS(on)) and compact chip size which ensures low capacitance and gate charge (Qg), delivering highest efficiency in a reduced system size, thereby enabling power density. When NCP1681 is used with NCP51561 galvanically isolated gate driver, robust design can be realized without sacrificing switching performance.

オンセミ (onsemi) について

オンセミ (Nasdaq: ON) は、より良い未来を築くために、破壊的なイノベーションを推進しています。当社は、自動車と産業用エンドマーケットに注力し、自動車の電動化と安全性、持続可能なエネルギーグリッド、産業オートメーション、5G およびクラウドインフラなどのメガトレンドにおける変化を加速させています。オンセミは、高度に差別化された革新的な製品ポートフォリオにより、世界の最も複雑な課題を解決するインテリジェントなパワーおよびセンシングのテクノロジーを創出し、より安全でクリーンでスマートな世界を実現する方法をリードしています。オンセミは Fortune 500®企業として認められ、またNasdaq-100 Index®とS&P 500®インデックスに含まれています。オンセミの詳細については、www.onsemi.jpをご覧ください。

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オンセミおよびオンセミのロゴは、Semiconductor Components Industries, LLC.の登録商標です。 本ドキュメントに掲載されているその他のブランド名および製品名は、それぞれの所有者の登録商標または商標です。 本ニュースリリースでは、当社のウェブサイトを参照していますが、ウェブサイト上の情報はここには記載されていません。

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