BS EN 62680-3 series discusses standards for universal serial bus interfaces for data and power.
BS EN 62680-3 is the third part of the multiple series that focuses on the Battery Charging Working Group is chartered with creating specifications that define limits as well as detection, control and reporting mechanisms to permit devices to draw current in excess of the USB 2.0 specification for charging and/or powering up from dedicated chargers, hosts, hubs and charging downstream ports. These mechanisms are backwards compatible with USB 2.0 compliant hosts and peripherals.
BS EN 62680-3 on micro-USB cables and connectors is useful for:
The USB ports on personal computers are convenient places for Portable Devices (PDs) to draw current for charging their batteries. This convenience has led to the creation of USB Chargers that simply expose a USB standard-A receptacle. This allows PDs to use the same USB cable to charge from either a PC or a USB Charger.
BS EN 62680-3 assists you with the USB 2.0 specification requirement that after connecting, a PD must draw less than:
In short, BS EN 62680-3 specifies PD procedures for determining how much current it is permitted to draw from an upstream USB port, as well as techniques for distinguishing between a Standard Downstream Port and a Charging Port. BS EN 62680-3 specifies the requirements for a compliant USB charger, which is referred to as a USB Charger in this specification.
EN 62680-3 (IEC 62680-3:2013) AS
IEC 62680-3:2013