USB Type-C & Power Deliveryコントローラ


USB Type-C®コネクタは、次のような特徴を持ち、さまざまなアプリケーションで採用が拡大しています。

  • リバーシブルなプラグにより上下の区別なく、どちらの方向でも挿入可能
  • 最大100Wの電力供給(5V / 0.5A~20V / 5.0A)に対応
  • 従来のType-AおよびType-B双方の機能を1ポートに統合でき、接続ポート間で役割を自在に変更可能


USB Type-Cのアプリケーションへの実装には、USBインタフェースの規格に加え、適切な保護レベルで安全な動作を確保するために、アプリケーション固有の要件も満たす必要があります。

STは、複数のアプリケーション向けに、USB Type-Cの実装にかかる開発期間の短縮とコストの低減が可能なリファレンス設計を提供しています。開発者の方は、STのブログ記事「Moving to USB-C, The STUSB45 and Its Reference Design in a Video」を是非ご覧ください。

USB PD Type C Product Selector

Questions / Answers around USB-C and Power Delivery

With the recent introduction of USB-C connectors supporting up to 100W of power, universal charging becomes a reality for users, especially the younger generation, seeking more portability and connectivity as well as to take care of their environmental footprint.

Why adopting USB-C as charging plug?

For devices up to 100W (20V 5A), the USB Power Delivery standard now offers a charging connector alternative to any input power plug (USB micro-B or DC barrel for instance). Main advantages and benefits are:

  • Smarter design: Thanks to its thickness and robustness, the type-C connector makes the product shape smarter than with a legacy DC barrel.
  • Universality: Additionally, in most cases, it makes the device compliant with universal AC adapters.
  • Cost saving: For vendors, no need any longer to include in the box a dedicated AC adapter for every device.
  • More convenient: For users, no need to carry multiple AC adapters when traveling. A cable works for all.
  • Eco-friendly: For the planet, less electronic wastes.

For SOURCE applications (AC adapter, power hubs, etc.), please check our portfolio here.

For SINK applications (battery powered or not), please check our portfolio here.

How to migrate from micro-B port to USB-C?

ST provides developers with a comprehensive solution to help them migrate their applications from USB Type Micro-B to Type-C ports based on our standalone STUSB4500L USB Type-C port controller.

With integrated VBUS switch gate drivers (PMOS), this certified USB-C 1.4 Power Sinking Device can be supplied directly by VBUS. In this case, power is provided directly by the source, avoiding any leakage from local batteries when the USB-C port is not used.

To help developers get started with their design, our STUSB4500 evaluation board (EVAL-SCS002V1) can be used as a small footprint reference design for fast migration of any USB mini-B, micro-B or STD-B application to USB-C. Schematics and source code examples are also available.

How to migrate from custom power plug or DC barrel to USB-C?

To help with their implementation, developers can use our standalone STUSB4500 USB PD controller for power sinking devices. The STUSB4500 is tiny, safe, certified, and easily customizable. It can be powered only from VBUS, therefore not sinking any current locally, preserving the battery lifetime.

Our EVAL-SCS001V1 reference design ensures a fast and easy migration from DC barrel to Type-C ports. An STUSB4500 evaluation board (STEVAL-ISC005V1) is also available to help developers get started. Schematics and source code examples can also be downloaded.

usb power delivery controller