The Microchip USB2513BT-I/M2: A Compact Powerhouse for USB Hub Design

In the realm of modern computing and embedded systems, the efficient management and expansion of USB connectivity are paramount. The Microchip USB2513BT-I/M2 stands out as a highly integrated, low-power solution designed specifically for this purpose. This 3-port USB 2.0 Hi-Speed hub controller is engineered to provide robust and flexible connectivity while adhering to the USB Battery Charging (BOT) specification, making it an ideal choice for a wide array of applications.

At its core, the USB2513BT-I/M2 is a hub controller that supports three downstream ports, all capable of operating at Hi-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps). This ensures seamless compatibility with a vast ecosystem of USB peripherals, from keyboards and mice to high-throughput storage devices. Its compact 36-pin QFN package makes it particularly suited for space-constrained designs, such as those found in notebooks, monitors, docking stations, and embedded systems.

A key feature of this controller is its integrated support for the USB Battery Charging Specification Rev. 1.2 (BOT). This capability allows downstream ports to provide enhanced charging current to connected devices, such as smartphones and tablets, even when the host computer is in a low-power state or turned off. This eliminates the need for separate charging circuitry, simplifying design and improving the user experience by ensuring devices charge quickly and efficiently.

The device is designed for ease of implementation. It requires a minimal number of external components, thanks to its integrated 5V-to-3.3V and 3.3V-to-1.2V voltage regulators and internal termination resistors. This not only reduces the Bill of Materials (BOM) and overall PCB footprint but also accelerates time-to-market for product developers. Furthermore, its advanced power management features include per-port or ganged power switching and over-current protection, enhancing the robustness and safety of the end product.

The USB2513BT-I/M2 operates in a multi-TT (Transaction Translator) configuration, which significantly improves the performance of multiple full-speed and low-speed devices operating simultaneously. This ensures that bandwidth is allocated efficiently, preventing a single slow device from bottlenecking the entire hub's performance.

ICGOODFIND Summary: The Microchip USB2513BT-I/M2 is a highly integrated, feature-rich USB 2.0 hub controller that excels in providing expanded connectivity and efficient battery charging capabilities. Its combination of a small form factor, compliance with the BC 1.2 standard, and simplified design requirements makes it a superior choice for developers aiming to enhance their products' USB functionality.

Keywords:

1. USB Hub Controller

2. Battery Charging (BOT)

3. Hi-Speed (480 Mbps)

4. Integrated Voltage Regulators

5. Multi-TT (Transaction Translator)