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Wednesday, May 22, 2013
Renesas Announces USB 2.0 Hub Controller Chip with Battery Charging Functio


Renesas has developed the µPD720115 USB 2.0 hub controller chip, which supports simultaneous USB communication and charging of portable devices such as smartphones and tablet PCs via a single USB connector.

The most important feature of the µPD720115 is its implementation of USB ports with battery charging functionality which supports the USB Battery Charging Specification, Revision 1.2 (USB BC 1.2). The µPD720115 will make it easier to develop products that support simultaneous data communication complying with the USB 2.0 standard and charging portable devices via a single USB connector, such as PCs, digital TVs, and charging adapters. It can help shorten system architecture development cycles and reduce development costs.

The most recent USB 3.0 standard supports data transfer speeds up to 5 gigabits per second (5 Gbps). However, applications such as digital TVs, printers, audio components, and industrial equipment employs the earlier USB 2.0 standard, which supports data transfer speeds up to 480 megabits per second (480 Mbps).



Key Features of the µPD720115:

- Supports the USB BC 1.2 standard, for easy development of USB charging system architectures

The µPD720115 implements a total of four USB ports with battery charging functionality. It supports the USB BC 1.2 standard, which supports charging currents of up to 1.5 amperes (A).

- Built-in dual voltage regulators and clock output function, making it possible to build more compact systems at a lower cost

Comparable earlier products required external voltage regulators, but the µPD720115 integrates a 5 volt (V) and a 3.3 volt (V) regulator on-chip. This allows the user to employ the 5 V from the USB cable as a power supply without modification. There is no need to include an external regulator in the system design.

The µPD720115 also has a clock output function (24 MHz) to enable cascade connection of the USB ports to other µPD720115 chips or connection to other chips used by USB peripheral devices. This eliminates the need to add an external crystal oscillator for the lower-level chip, as was previously the case.

- Operating temperature range extending down to ?40, enabling use in a wide range of application fields

Samples of the µPD720115 USB 2.0 hub controller chip will start in June 2013. Mass production of the µPD720115 is scheduled to begin in September 2013 and is expected to reach a scale of 1,000,000 units per month in 2014.


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