Preface
I don't know if you're reading this article,When it comes to USB-C interface,What will come to mind at first,Maybe it's the convenience of plugging and unplugging at will,Maybe it's the first LETV mobile phone that supports USB-C interface,Maybe it's USB PD3.1Up to 240W fast charging power,Maybe it's a variety of displays that support USB-C wire-pass。
It is undeniable that the application of USB-C interface on the display brings a lot of convenience to users. The USB-C port can realize the integration of video, audio and data transmission, which is often referred to as "one line communication", which makes it easier and more convenient to connect to the display. Users can connect their monitor to a computer or other device with a single USB-C cable, eliminating the need for tedious cable connections. At the same time, the USB-C interface supports the PD fast charging protocol, which can quickly charge laptops, tablets and other devices at the same time as the output signal, which can be described as killing multiple birds with one stone, greatly reducing the number of desktop cables for users.
USB-C fast charging chips are used in displays
To achieve the "One-Stop Connect" function, the display must have a built-in fast charging chip to support the USB PD fast charging output. Recently, Charging Head Network has sorted out a number of display cases with built-in USB-C fast charging chips. Some of the parameters of the built-in chip are shown in the figure above, and the detailed information and application cases will be introduced to you in the following content.
LE USB PD控制器TPS65983
TI TPS65983 is a USB PD controller, using BGA package, built-in power switch and high-speed multiplexer, providing three configuration modes of power supply device, power receiving device or power supply-receiving device, supporting the connection status detection of USB cable plug, for USB PD power supply control, is a complete USB PD solution.
The TPS65983 chip also has built-in 5V-20V/3A bidirectional switches, over-current limiter, over-voltage protector, slew rate control, hard reset and other functions. In addition, TPS65983 can be used as an upstream data port (UFP), a downstream data port (DFP), or a dual-role data port. The Port Data Multiplexer enables USB 2.0 HS data transfer between the port and the top or bottom D+/D– signal pairs, and has a USB 2.0 low-speed endpoint. TPS65983 can use sideband usage (SBU) signal pairs for secondary or alternate mode communications, such as DP or Thunderbolt protocols. This chip is suitable for a variety of display and docking station applications with built-in Thunderbolt 3.
Application examples
LG UltraFine 27 5K显示器
LG UltraFine 5K monitor is a monitor with a built-in Thunderbolt 3 interface, with high resolution and P3 color gamut, which is equivalent to the display content of 4 2K monitors, thus giving it strong competitiveness and becoming the main display for many content workers.
Related Reading:
Teardown Report: LG UltraFine 27 5K Monitor Driver Board Teardown
芯海科技USB PD控制器CS32G020K8U6
The CS32G020K8U6 of Chipsea Technology is a USB-C controller that supports USB-C and PD3.0 launched by Chipsea Technology, which is suitable for USB Type-C and USB PD controllers for Device or power applications. It integrates two independent Type-C CC and USB PD functions, Load Switch Driver, and USB BC1.2. At the same time, it also integrates a variety of fast charging protocols for mobile phones to enhance the charging compatibility of terminal devices. It can be used in adapters, power banks, car charging, hubs, displays, and other fields. It is easy to achieve a dual Type-C port solution with one chip.
Chipsea CS32G020 has a built-in ARM M0 core, 48MHz frequency, built-in 64K program memory, 4KB LDROM, and 8K SRAM, supporting a wide range of industrial control applications and high-performance processing scenarios, and providing QFN24 and QFN32 packages. It is used for USB PD protocol functions in this Redmi monitor, which is available in two packages: QFN32 and QFN24.
Application examples
SKYWORTH 27-inch 2K LCD monitor
SKYWORTH's 27-inch 2K monitor adopts a three-sided micro bezel design, with a simple and elegant appearance. The monitor supports HDMI, DP and USB-C video outputs and a 60W charging output, and can be used as a traditional monitor as well as a WireLink laptop. The monitor is also equipped with two USB-A ports, which can be connected to a keyboard and mouse, making it easier to use with a laptop.
Related Reading:
Teardown report: SKYWORTH 27-inch 2K LCD monitor
Redmi 27-inch 4K LCD monitor
This 27-inch 4K monitor launched by Redmi supports two HDMI inputs, one DP input, and also supports USB-C video input and charging output, which can not only be used to connect to desktop office use, but also can be directly connected to a notebook, and the monitor also has a USB-A interface, which can be expanded to include a USB-A interface for notebooks, which can be used for data transmission and connecting peripherals, which is very convenient to use.
Related Reading:
Redmi, Skyworth, LG's three 27-inch USB-C monitors are disassembled and summarized
Summary of the charging head network
The charging head network understands that the display with built-in USB-C fast charging chip is gradually becoming the first choice of users, and these chips provide users with the "one-line" function, effectively reducing the number of desktop cables and expanding the use scenarios of the display. However, the application of these chips is not limited to displays, but can also be extended to other fields. For example, in the current hot field of new energy vehicles, various intelligent car machine entertainment systems are very popular with consumers, and the USB-C fast charging chip is added to the built-in car machine system to provide convenient charging services for passengers, and at the same time realize data transmission and interaction with the vehicle system, bringing users a smoother and clearer audio and video experience.
In addition, the USB PD controller chip TI TPS65983 mentioned in the article not only supports the PD fast charging protocol and a variety of protection functions, but also supports a variety of data ports, which can be used as an auxiliary data transmission for Thunderbolt 3. Another CS32G020K8U6 of Xinhai Technology has added support for mainstream fast charging protocols such as QC, SCP, FCP, and AFC on the basis of PD protocol, which has a wider range of use. It is not difficult to find that these two chips are suitable for mobile power supply, outdoor power supply, docking station and other product applications in addition to displays.