IW1799-02

iW1799 AC/DC Primary-Side DLNK Rapid ChargeTM Controller with High Performance Voltage/Current Control 1 Description NDA Confidential The iW1799 is a high performance AC/DC power supply controller for rapid charge applications that supports high resolution voltage/current control. The device can support high power applications with power ratings of 45W or up and it can support 10mV voltage step requests up to 21V. It uses Dialog’s PrimAccurateTM technology to minimize external component count and simplify system design. The device operates in quasi-resonant mode to provide high efficiency and it also provides a number of key built-in protection features. The iW1799 can achieve tight multi-level constant voltage and multi-level constant current regulation without a traditional secondary feedback circuit. It also eliminates the need for loop compensation components while maintaining stability over all operating conditions. TIA L The iW1799 is optimized to work with Dialog’s secondary-side controllers that use the proprietary digital link (DLNK) technology. The iW1799 and DLNK-based secondary-side controller chipset together can implement various rapid charge protocols, such as USB Power Delivery (USB PD), Qualcomm® Quick Charge™ 2.0 and 3.0 (QC2.0 and QC3.0) technologies, Huawei Fast Charge (FCP) and Super Charge (SCP) technologies, etc. to achieve fast and smooth voltage transitions upon request by mobile devices (MD). The iW1799 and compatible secondary-side controller from Dialog use the DLNK communction protocol for output voltage requests, output current limits, output voltage undershoot and over voltage information from the secondary to the primary. The iW1799 can also provide the unique protection features, such as Vin OVP or X-cap discharge for different applications. The iW1799 can provide no-load power consumption for a typical 5V output setting of less than 75mW with ample margin. The no-load power consumption can be reduced to less than 20mW with an optional, external active start-up DFET. EN Dialog’s innovative proprietary technology ensures that power supplies designed with the iW1799 and Dialog’s secondary-side controllers can provide output voltage configurations of 3.3V to 21V for USB PD, 5V/9V/12V for QC2.0 and 3.6V to 12V in 200mV increments for QC3.0, 5V/9V for Huawei FCP; 3V to 5.5V for Huawei SCP and other proprietary protocols. Qualcomm® Quick ChargeTM 2.0 and 3.0 are products of QualcommTechnologies, Inc. NF ID 2 Features ■■ Supports 45W or up application circuit designs ■■ No audible noise over entire operating range ■■ Supports 10mV DLNK voltage step request up to 21V required by USB PD programmable power supply (PPS) or other proprietary rapid charge protocols ■■ User-configurable 4-level cable drop compensation independent of output voltage ■■ RC charging VCC technology enables ultra-low no-load power of