Diodes Incorporated, in response to rapidly growing opportunities in pre-installed in-vehicle USB charging, has announced a highly integrated dual-channel USB Type-C protocol decoder. The DIODES AP43776Q supports USB power delivery (PD) 3.1 standard power range (SPR), programmable power supply (PPS), and Quick Charge QC5 fast-charging protocols. It also supports legacy battery charging (BC) 1.2 and…

Diodes Incorporated has introduced a high-efficiency synchronous boost converter. The DIODES AP72250 is targeted at step-up conversion in consumer and industrial applications where small form factors are a priority. These include battery-powered devices, USB power-supply units, power banks, supercapacitor charging equipment, and metering systems. The AP72250 supports a 900kHz switching frequency with a 20µA quiescent…

What is USB? UNIVERSAL SERIAL BUS What does it do?It connects your laptop or PC to the peripheral devices attached to it.How does it communicate?You attach the device using a cable to PC and communication is initiated within a fraction of seconds. However, what looks easy on our end is a complicated process in the USB system. It may be single step in our stride to attach the device and start working but for the system it’s entirely a different picture. In that fraction of second after the device is attached, it initiates step by step process to make communication possible. It starts right from alerting the PC about the attachment, change in voltages at ports, then addressing the devices, gathering the information, loading the drivers and finally communication. Let’s understand each of these steps in detail to get a crystal clear picture about the working of USB.

Featuring a synchronous topology for optimum efficiency, the new STMicroelectronics STPD01 DC/DC buck converter is digitally programmable for USB power-delivery (PD) applications up to 60W. With a wide input-voltage range of 6 to 26.4V, the STPD01 offers flexibility to address applications such as AC multiport adapters, USB hubs, PC monitors, and smart televisions. The output…

Infineon Technologies has introduced the industry’s first high-voltage microcontroller (MCU) with USB power delivery (USB PD) 3.1 support. The EZ-PD PMG1 (Power Delivery Microcontroller Gen1) is Infineon’s first generation of USB PD MCUs targeting any embedded system that provides or consumes power with high-voltage up to 28 V (140 W). The device supports higher power…

本文的目的是解释如何通过USB端口将PIC微控制器连接到PC。尽管这些概念是通用的，但这些示例是专门用于与Mikroelelektronika的“ Mikroc Pro for Pic”一起使用的。PIC18F2550和PIC18F4550以其USB模块而闻名。为了保持领先地位，您可以从他们的数据表开始。该项目的最困难部分是使PIC MicroController与USB端口通信所需的。绝对必须正确的两个最重要的事情是MicroController配置和USB设备描述符。即使最小的事情对此都不正确，也不会发生沟通。

Universal Serial Bus (USB) is a standard developed in 1990s with an intention to replace all the different connectors and ports with a single ‘universal’ industrial standard port and connector. Under the USB standard the communication protocol, cables and connectors are defined. The different connectors available under the USB standard are Type A, Type B, Mini A, Mini B, Micro A and Micro B.

Just like their name, Universal Serial Bus connectors, are unanimously used as a carrier in power and data exchange operations. Developed and promoted by computing giants like Intel, Microsoft, Dell, IBM and NEC, USB interfacing has been highly preferred to connect various computer peripherals. Mouse, keyboard, cameras, printers, scanners, laptop cooling pad, external memory are the prominent few names among a long and increasing list. Apart from computers, USB based connectors have also arrived in television, mobile phone chargers, multimedia players etc.

USB Flash Drives or commonly called as Pen Drives are popular removable storage media having a storage capacity up to 256 GB. They are preferred over the other conventional storage devices like floppy disks or CD ROMs as they are faster, smaller and have a longer life span. The internal circuitry of the pen drive draws power from the computer for its operation. They have an integrated USB interface to communicate with the computer. The important parts of the pen drive are USB connector, crystal oscillator, memory chips and a controller to interact with the PC. The pen drive used here has storage capacity of 4GB.

年代erial communication with embedded project and computer has always been a big deal for the students in their project and professional in their work. So tried to work on that part and created an easy way for interfacing between PC and embedded system using PIC Microcontroller PIC18F2550 AND PIC18F4550.This tutorial provides the basic knowledge of creating small compact USB device interface between pc and embedded system and its controlling. You can control, moniter or implement data acquisition system using this tutorial