Описание
The iW626 is an AC/DC secondary-side controller for QC2.0 USB interface and secondary-primary communication. Thedevice allows rapid charging of QC2.0-enabled PDs. The iW626 resides on the secondary side of an AC/DC powersupply and allows the adapter to be configured for 5V, 9V, or 12V output depending on the voltage requested by QC2.0enabled PD. It can be used in Dialog’s primary-side controlled AC/DC systems to achieve fast voltage transition, lowno-load power consumption and fast dynamic load response. The iW626 implements Dialog’s proprietary secondaryto-primarydigital communication technique. When paired with Dialog’s primary-side controller iW1780, the iW626eliminates the discrete decoders in the primary side and simplifies system designs. The iW626 uses one opto-couplerto transmit all necessary information for rapid charge, including output voltage requests, output current limits, outputvoltage undershoot and output over-voltage. It also has a built-in opto-coupler LED driver to minimize the bill of materialcost.Dialog’s innovative proprietary technology ensures that power supplies designed with the iW626 and iW1780can provide 5V/9V/12V output voltage configuration, with user-selected various output current limit combinations.Furthermore, the chipset can achieve <10mW no-load power consumption at 5V2A output setting and fast dynamic loadresponse in typical AC/DC HVDCP adapter designs.
- Supports Qualcomm® Quick ChargeTM 2.0 (QC2.0) technology High Voltage Dedicated Charging Port (HVDCP) Class A with voltage configuration of 5V, 9V, and 12V
- Proprietary secondary-to-primary digital communication eliminates discrete decoders in the primary side and simplifies system designs
- Single opto-coupler transmits all information for rapid charge: output voltage requests, output current limits, output voltage undershoot, and over-voltage protection
- Backward compatible with USB Battery Charging Specification Revision 1.2 (USB BC1.2) Dedicated Charging Port (DCP)
- Programmable active fast discharge from 9V/12V to 5V at portable device (PD) unplug or from a high voltage level to a lower level upon request with builtin switch or external switch
- Normally OFF state with <120mA cut-off current during 5V steady-state operation to achieve <10mW power consumption at no load
- Wide operating voltage range from 3V to 25V
- Built-in opto-coupler LED driver with minimum driving current of 2mA
- 6-lead SOT-23 package
