New LLC controller aims to unburden designers who will benefit from efficiency advantages

Texas Instruments new UCC256301 LLC resonant controller featuring an integrated high-voltage gate driver is designed for a wide-range of AC/DC applications including digital televisions, gaming adapters, desktop and notebook adapters, and power tool chargers. The device enables what is claimed to be the industry's lowest standby power and provides a cost-effective system solution. The device has been designed to pair with a PFC stage to provide a complete power system using a minimum of external components. The resulting power system is designed to meet the most stringent requirements for standby power without the need for a separate standby power converter, and with PFC stage running all the time. It includes a range of features designed to make LLC converter operation well controlled and robust. This device aims to unburden the LLC designer and allow mainstream applications to benefit from efficiency advantages of the LLC topology.