40 percent faster high-voltage, half-bridge driver reduces system-solution size for MOSFETs and IGBTs
Bangalore, 30th September 2015 — Texas Instruments (TI) introduced the industry’s fastest half-bridge gate driver for discrete power MOSFETs and IGBTs that operate up to 600 V. The UCC27714 high-side, low-side driver with 4-A source and 4-A sink current capability reduces component footprint by 50 percent, enabling higher power density in high-frequency, offline AC/DC power supplies used in server, telecom and industrial designs including uninterruptible power supplies. For more details, see www.ti.com/UCC27714-pr.
The UCC27714 delivers 90 nanosecond (ns) propagation delay, 40 percent lower than existing silicon solutions, tight control of the propagation delay with a maximum of 125 ns across -40 C to 125 C and tight channel-to-channel delay matching of 20 ns across -40 C to 125 C. The device eliminates the need for bulky gate drive transformers, saving significant board space in high-frequency switch-mode power electronics.
Key features and benefits of the UCC27714:
· Smaller footprint creates highest power-density solutions: The UCC27714 reduces gate driver component footprint by 50 percent in secondary-side controlled power supplies.
· Advanced noise toleration: Negative voltage handling of -6 V at the switched-node pin creates the ability to tolerate noise, causing virtually no malfunctions in the electronic system.
· MOSFETs have the ability to drive over a wide power range: The device’s high-current capability of 4 A enables MOSFETs to drive over a wide power range, from a few watts to a kilowatt.
· Operates across wide temperatures: All electrical characterizations have little variations across operating temperatures, creating a simplified design and speeding time to market.
Complementary devices to maximize system performance
Every gate driver in a system requires the appropriate controller for the end application. TI offers several pulse-width modulation (PWM), resonant, power factor correction (PFC) and digital power controllers. With the UCC27714 and TI’s recently released UCC29950 combination PFC (power factor correction) + LLC controller, designers can develop a complete, offline AC/DC power supply rated up to a few hundred watts. The fully internalized PFC compensation of UCC29950 reduces design steps enabling fast time-to-market while the three-level over current protection and hiccup mode operation ensures a robust operation under short circuits and overload conditions.
