Users should be aware that there are standardized jack and plug combinations in which the center pin is in the jack for some and in the plug for others. The connector with the center pin is accepted as male and the mating connector is accepted as female. Some in the industry avoid declaring male and female when discussing connectors, while many engineers, following the conventions of the RF connector industry, have accepted the center pin configuration for defining the gender of barrel power connectors. The definitions of gender for dc power connectors are less standardized than the definitions of jacks, plugs and receptacles. A receptacle is also mounted on a power cord and receives power from a mating plug. The plug is most often located on the electrical cord and supplies power from the power supply. The jack typically receives power and is mounted in the appliance, either on a PCB or in the chassis. While there is not an absolute standard for the definition of barrel power connectors, the electronics industry has drifted towards common usage of the terms jack, plug and receptacle. ![]() ![]() Jacks, Plugs, and Receptacles in Dc Power Applications Additionally, there should be little concern that sensitive components will be damaged by plugging a power connector into an incorrect receptacle since barrel connectors are almost exclusively used to supply power to electronic devices. A benefit of the recessed second conductor is that it is difficult to accidentally create a short between the two conductors. Both the jack and the plug of barrel connectors feature one exposed conductor and a second recessed conductor. These ratings ensure reliability when using these connectors in power delivery applications. Low voltage dc power connectors, often referred to as barrel connectors, have both current and voltage ratings specified by the manufacturer. Selecting one of the more commonly used models is often the best choice for power supply connections as these connectors are inexpensive and readily available. Specifying the proper dc power connector is not a complex task and can be completed quickly and painlessly. Going forward, USB-C will become the most common DC power source for consumer electronics, replacing all incompatible barrel power connectors or custom connectors with one common charger that is truly universal and accepted worldwide.You have finished the initial phases of your new design and are anxious to see the project through to completion, but a few tasks remain, including the selection of the low voltage dc input power connector. Today, more than two billion devices are shipped annually with USB-C and USB PD on board. Infineon is the market leader in USB-C and has been helping early adopters bring their USB-C powered products to market since 2015. The introduction of a new USB-C powered common charger in replacement of incompatible barrel connector chargers could result in the reduction of one million tons of thrown-away power adapters ending up in landfill each year – a significant portion of the total e-waste produced annually. Over the long-term, the wide-spread standardization will allow manufacturers to stop shipping a power adapter with their products altogether. Meanwhile, manufacturers will be able to consolidate dozens of incompatible DC barrel power connectors into a single USB-C connector this will help streamline their power adapter supply chain and reduce inventory risk. Consumers will be able to share and re-use the same universal charger power adapter for all their electronic devices: no more confusion when pairing a charger with a device or having to carry a dedicated charger for every device while traveling. Standardization on a single connector provides great benefits to consumers, manufacturers, and the environment. USB-C can truly become “the one connector” for powering all electronic devices. ![]() The EZ-PD ™ BCR (Barrel Connector Replacement) family easily adds USB-C power consumer capability to a device, allowing it to be powered by any USB-C power source including USB-C universal chargers, power adapters, power banks, and in-wall or in-car charging ports.īut why consider a conversion from DC barrel power connectors to USB-C? Because USB-C is the “Holy Grail” of wired connectivity: it offers bidirectional data and power, a tiny orientation-agnostic connector that is the same on both ends of the cord while carrying up to 240W of power. Infineon´s USB-C powered charging port controllers’ portfolio for power consumer applications up to 100 W is the solution for all designers interested in exploring USB Type C and USB Power Delivery (PD) controllers for their products.
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