iW636 Datasheet | Dialog Semiconductor

i W636 AC/DC Secondary-Side Controller for Qualm® Quick Charge TM 3.0 USB Interface 1 Description The i W636 is an AC/DC secondary-side controller for USB interface supporting Qualm Quick Charge 3.0 (QC3.0) technology and secondary-to-primary munication protocol, to enable rapid charging of QC3.0/QC2.0-enabled mobile devices (MDs). The i W636 resides on the secondary side of an AC/DC power supply and allows the adapter to be configured for multi-level output voltages from 3.6V to 12V in 200m V increments, depending on the voltage requested by the MD. It can be used in Dialog’s primary-side controlled AC/ DC systems to achieve fast voltage transition, low no-load power consumption, and fast dynamic load response. The i W636 implements Dialog’s proprietary secondary-to-primary digital munication technique. When paired with Dialog’s primary-side i W1782 controller, the i W636 eliminates the discrete decoders on the primary side, simplifying system designs. It uses one opto-coupler to transmit all the necessary information for rapid charging, including output voltage requests, output current limits, output voltage undershoot, output over-voltage, and fault and reset signals. It also has a built-in opto-coupler LED driver to minimize the bill of material cost. The i W636 and i W1782 provide double-layer cable protection. On the secondary side, the i W636 incorporates Dialog’s proprietary D+/D- over-voltage protection to address VBUS D+/D- soft shorts. On the primary side, the i W1782 uses Dialog’s Smart Defender TM advanced hiccup technology to reduce the average output power during soft shorts without latch. Dialog’s innovative, proprietary technology ensures that power supplies designed with the i W636 and i W1782 can provide multi-level output voltage configuration, with user-selected various output current limit binations. Additionally, the chipset can achieve <10m W no-load power consumption at 5V, 2A output setting and fast dynamic load response in typical...