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Power Tips: USB Power Delivery for Automotive Systems
Robert Taylor, Applications Manager, Texas Instruments
EETimes (10/13/2016 11:54 AM EDT)
The new USB Type-C standard has a power delivery portion that could enable portable devices to charge faster.
One of the most exciting aspects of the new USB Type-C standard is the power delivery portion. With USB Power Delivery, devices can negotiate for more power, thus enabling features that were previously not possible. Portable devices like phones, tablets and laptops will be able to charge faster. Higher-power devices like monitors will be able to receive both power and data over the same cable.
The number of devices and hosts is still relatively low, but momentum is building. As the popularity of USB Type-C devices increases, consumers will want to use them at home as well as on the go, particularly in automobiles.
Automotive systems have a unique set of requirements and design obstacles beyond the requirements for USB Power Delivery. Table 1 shows the typical voltages in automotive systems.
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