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Fast charge interface controller supports USB Type-C

Posted: 30 Nov 2015     Print Version  Bookmark and Share

Keywords:Weltrend Semiconductor  USB Type-C  smartphone  tablet  interface controller 

Weltrend Semiconductor has rolled out what it says is a fast charge interface controller chipset geared for travel adapters, car chargers and power banks for smartphones and tablets. The WT7692 features Qualcomm Quick Charge 2.0 technology, auto detection of USB DCP applying 1.2V on D+/D- or 2.7V on D+/D-, and the emerging USB Type-C specification.

WT7692 integrates USB Type-C control logic for USB Type-C CC pin detection, blocking MOSFET control, vSave0V discharge control, Qualcomm Quick Charge 2.0 control logic, discharge control, auto-detection circuit and UVLO. A smart auto detect feature monitors USB D+/D- voltage and auto bias the correct voltage on the D+/D- to fast charge compliant devices.

WT7692 supports high voltage dedicated charging port (HVDCP) Qualcomm Quick Charge 2.0 Class A technology 5/9/12V which is able to decrease the charge time by as much as 75 per cent of current charging time. The WT7692 is UL verified.

Key features of Weltrend's WT7692 fast charge interface controller include: Type-C attach/detach detection for 3A at 5V; VBUS vSafe0V discharge; external blocking MOSFET control; USB battery charging specification, revision 1.2 (BC1.2), dedicated charging port (DCP); Quick Charge 2.0 class A technology 5/9/12V; low standby current; and SOP10 packaging.

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