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MOSFET drivers claim 100V surge protection

Posted: 06 Jan 2012     Print Version  Bookmark and Share

Keywords:Mosfet driver  server power supply  telecom 

Texas Instruments Inc. (TI) introduces the UCC27210, UCC27211 and UCC27524 two-output gate MOSFET drivers that claim to improve efficiency and reliability in high-density isolated power supplies.

The UCC27210 and UCC27211 are touted as the first 120V boot, high- and low-side (TTL and pseudo-CMOS compatible input versions), two-output MOSFET drivers to provide up to 4A output current, while handling -10V of direct current (VDC) immunity on the driver inputs that allows direct interface to gate-driver transformers without the need for rectification diodes.

The drivers can drive both N-channel high-side and low-side FETs, and offer 0.9Ω pull-up and pull-down resistance that minimises switching loss as the MOSFET transitions through the Miller Plateau.

 UCC27524

The UCC27524 delivers low pulse distortion and high efficiency with a fast 12ns propagation delay, 6ns rise time with 1ns output delay matching.

The drivers support multiple high-frequency half-bridge and full-bridge power topologies with a fast 18ns propagation delay. The combined features are said to improve efficiency and enhance reliability in telecom, server and industrial power supply designs with 100V surge requirements.

TI also claims the fastest 5A dual-channel low-side driver for secondary-side synchronous rectifier MOSFETs and IGBT power switches. The UCC27524 delivers low pulse distortion and high efficiency with a fast 12ns propagation delay, 6ns rise time with 1ns output delay matching. The driver, which supports 4.5V to 18V operating voltages, has the flexibility to combine both outputs to drive up to 10A applications, such as motor drive systems.

The UCC27210 and UCC27211 are available in an 8- or 10-pin, 4-mm x 4-mm 8-pin SON and an 8-pin SOIC package. The UCC27524 comes in industry-standard 8-pin SOIC and PDIP packages. A 3mm x 3mm, 8-pin WSON will be available later in the first quarter. Suggested resale pricing for the UCC27210/1 is Rs.76.53 ($1.50) in 1,000-unit quantities and Rs.35.71 ($0.70) for the UCC27524.





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