Data de postagem: 2015-11-24
Texas Instruments has introduced what is believed to be the industry's fastest half-bridge gate driver for discrete power MOSFETs and IGBTs operating below 600V.
UCC27714 high-end, low-end driver with 4A source and 4A sink capability reduces component footprint by 50%, enabling implementation in high-frequency offline AC / DC power supplies used in server, telecommunications, and industrial designs (including uninterrupted) A higher power density power supply.
UCC27714 provides a transmission delay of 90 nanoseconds (ns), which is 40% lower than existing silicon solutions. The transmission delay is strictly controlled. The maximum delay between -40C and 125C is 125ns and the tight channel-to-channel delay between -40C and 40C. The match is 20ns. 125 ° C. This device eliminates the need for a large gate drive transformer, thereby saving a lot of board space in high-frequency switch-mode power electronics.
Key Features: 1-Smaller footprint provides the highest power density solution: UCC27714 reduces the footprint of gate driver components by 50% in a secondary-side controlled power supply. 2-Advanced noise tolerance: The -6V negative voltage handling capability on the switch node pins can withstand noise and will not actually cause the electronic system to fail. 3-MOSFET has the ability to drive over a wide power range: The device's high 4A current capability enables the MOSFET to be driven over a wide power range from several watts to kW. 4-Can work in a wide temperature range: All electrical characteristics have little change over the operating temperature range, which simplifies design and speeds time to market.
Complementary devices to maximize system performance – each gate driver in the system requires the appropriate controller for the end application. TI offers several pulse width modulation (PWM), resonance, power factor correction (PFC) and digital power controllers. Using UCC27714 and TI's recently released UCC29950 combined PFC (Power Factor Correction) + LLC controller, designers can develop complete offline AC / DC power supplies rated up to several hundred watts. The company said that UCC29950's fully internalized PFC compensation reduces design steps, thereby shortening time to market, while three levels of overcurrent protection and ic mode operation ensure robust operation under short circuit and overload conditions.
Tools and Support to Accelerate Design – TI provides a wide range of support tools for UCC27714 to speed time to market. UCC27714 is now available for purchase at TI stores or through the company's authorized distribution network. The high-speed 600V high-side low-side gate driver is available in a small-scale integrated circuit (SOIC) -14 package.
