WS2994A Datasheet | Winsemi

Description WS2994A is a high performance dual channel synchronous rectifier controller, which is applied to the output side rectifier of half bridge LLC resonant converter, and can realize the optimal control of MOSFET. By detecting the Vds voltage of the rectified MOSFET, the MOSFET can be reliably switched on and off, thereby replacing Schottky diodes and improving the efficiency of the half-bridge LLC converter. WS2994A Gate voltage can be regulated according to output load with different turn-on delay time,avoiding false turn-on because of capacitive current during light load. The WS2994A is Green, when the load current reduce to a certain level, the gate drive is turned off, thus limiting the IC current to less than 140u A. The fast shutdown capability of the WS2994A supports continuous conduction mode (CCM) and discontinuous conduction mode (DCM) operation. It is highly-integrated with SOP-8 package. Features - VDA, VDB can withstand 120V - Wide VCC Operation Range,Support 4.83V ~ 35V - 140u A Low Quiescent Current in Light Load Mode - Fast Turn-Off ,Support CCM/Cr CM/DCM - High level up to 11.5V for Driver - Interlock function for Channel A&B - SOP-8 Package Typical Application - AC/DC Adapters - PC Power Supply - LCD TV Power Supply - Industry and Medical Power Supply Typical Application Circuit Note: VDAVDB must be connected with resistance, remended value: 200Ω -- 2.0kΩ, two resistance values can be different. W INSEMI MICROELECTRONICS W INSEMI MICROELECTRONICS W INSEMI M ICROELECTRONICS W INSEMI MICROELECTRONICS .winsemi. Tel : 0755-82506288 Fax : 0755-82506299 A0/13 W INSEMI MICROELECTRONICS 1/9 WS2994A Fast turn-off Dual LLC Synchronous Rectifier Controller Pin Configuration and Marking Information WS2994A is available in SOP-8 package.The top marking is shown as below: WS2994A：Product Code A：Product Code X：Internal Code BCY：Internal QC Code YMX：D/C Ordering Information Package 8-Pin SOP-8,Pb-free Marking WS2994A Part Number WS2994A Absolut...