| Universal Power Adapter for Mobile Devices | |
| Type: | Power Adapter |
| Designer: | IEEE UPAMD Working Group |
| Hotplug: | Yes |
| Daisy Chain: | Yes |
| Electrical: | charging power |
The Universal Power Adapter for Mobile Devices (UPAMD), codename IEEE 1823-2015 (before approval P1823), is an IEEE standard for power supply design intended to cater to the power range of (optionally for mobile devices like laptop computers. The power supply was required to have an output capacitive energy of less than and an inductive energy at disconnect of less than .[1]
The standard defines an AC adapter to power devices requiring from or (extended voltage option) up to [2] A new connector (that does not mate with any previously existing connector) is proposed for a lifetime of about ten years with multiple brands and models.[3] This minimum life of adapter was hoped to reduce electronic waste.[4] [5]
A common direct current power plug is intended to make life easier by eliminating the confusion regarding what voltage and current transformer one needs to buy and carry.[6] This can help mobile devices, laptops, many consumer electronic devices, office devices like Ethernet switches/hubs, and wireless routers to use the same power adapter around the world.
This specification defines a communication channel between device and adapter, to negotiate the requirements and supply.
There seem to be no known examples of commercial deployments of UPAMD in end-user devices. When asked about deployment in 2019, the chair for IEEE 1823 working group wrote the following:
The Standards Association of the Institute of Electrical and Electronics Engineers (IEEE) approved the Universal Power Adapter for Mobile Devices working group on June 17, 2010.[7] The project was sponsored by the Microprocessor Standards Committee of the IEEE Computer Society.
On 15 May 2015 the standard was published as IEEE Std 1823-2015.[8]