Renesas Electronics Corporation

The iW1602 is a digital offline AC/DC controller for up to 30W output travel adapters. It uses Renesas' PrimAccurate™ primary-side control technology to eliminate the need for an optical isolation device on the secondary, reducing component count and cost. The iW1602 integrates a unique light load operation mode that allows the user to configure the minimum switching frequency at light load through an external resistor. The higher the light load mode switching frequency, the better the dynamic load response (DLR). If the lowest switching frequency is chosen, the no-load power consumption is reduced, negatively impacting the DLR performance. In this case, theiW676synchronous rectifier controller with integrated active voltage position (AVP) control can be used for faster DLR while keeping the no-load power consumption <30mW. The iW1602 integrates a full array of protection features, including Renesas'SmartDefender™advanced hiccup technology to protect against soft shorts in travel adapter cables and connectors. ADiaSIM™simulation model is available for the iW1602. For more information and where to download, please visit theDiaSIMpage.

The iW1796 is a 27W output, high-performance AC/DC RapidCharge™ power supply controller that integrates Renesas' XM-Comm technology, eliminating all optocouplers from travel adapters to reduce cost and improve reliability. The device comes in an SOT23-6 package, reducing the total solution size for space-sensitive travel adapter applications. The device can support Qualcomm® Quick Charge™ 3.0 and 2.0 and other rapid charging protocols. It is optimized to work with Renesas'iW662secondary-side synchronous rectifier controller and rapid charge interface IC. The iW662 IC uses XM-Comm technology to transmit all necessary information via an optocoupler to the iW1796, including voltage requests, output current limits, output voltage undershoot, output overvoltage, and fault and reset signals. A full array of protection features includes Renesas' advanced fault control technology to address soft short circuits in charger cables and connectors without latching off the output. Qualcomm® Quick Charge™ is a product of Qualcomm Technologies, Inc.