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Thread: XMC1200 Fast Charge Adaptor with QC2.0 Protocol

  1. May 14th, 2014 02:53 AM #1
    Travis
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    XMC1200 Fast Charge Adaptor with QC2.0 Protocol

    Overview
    This is a Fast charge adaptor, which is capable of supporting the QC2.0 protocol (Quick Charge 2.0) from Qualcomm with excellent charging efficiency as compared to other competitors. It make use of Infineon XMC1200 high performance 32bit Cortex M0 CPU and DP2A single stage fly back controller with power factor correction to produce maximum power output of 15W @ 9V/1.67A.

    Further development to this fast charge concept will include a security hardware authentication chip from Infineon ORIGA to pair up with device such as mobile phone, tablets etc. This will have the benefits of protecting customer original products from counterfeits and unauthorized replacement parts.

    Implementation
    The QC2.0 (Qualcomm) protocol make use of different voltage level of the USB D+/- to request for the required charging Vbus voltage. Hence the fast 12 bit ADC of XMC1200 is required to convert the D+/D- voltage level to digital value which can then be process by the software and make the request to DP2A for the charging voltage output.

    The QC2.0 software protocol embedded within XMC1200 had been tested and verified with a Quick Charge 2.0 enabled device from Qualcomm.

    http://www.qualcomm.com/chipsets/quick-charge

    The software will also request the system to enter into Sleep mode when charging is completed or device is unplug to reduce power consumption. A fast wake up happens when the device is plug in to the adaptor and charging will resume at this point.

    Click image for larger version Name: Gonzales.JPG Views: 27 Size: 289.7 KB ID: 691
    Last edited by Travis; May 14th, 2014 at 03:08 AM.
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