TI Introduces Fast 4 and 5A Two-Output MOSFET Drivers for Telecom and Server Power Supplies
Texas Instruments Inc. (TI) is expanding its MOSFET driver portfolio with three next-generation two-output gate drivers which the company says improves efficiency and reliability in high-density isolated power supplies.
The UCC27210 and UCC27211 are described as the industry’s first 120V boot, high- and low-side, two-output MOSFET drivers to provide up to 4A output current, while handling -10V of direct current (VDC) immunity on the driver inputs. The drivers support multiple high-frequency half-bridge and full-bridge power topologies with an extremely fast 18-nanosecond (ns) propagation delay. The combined features improve efficiency and enhance reliability in telecom, server and industrial power supply designs with 100V surge requirements.
According to TI, key technical features of UCC27210 and UCC27211 include:
– Industry’s first 120V rated, 4A high- and low-side drivers (TTL and pseudo-CMOS compatible input versions) that drive both N-channel high-side and low-side FETs.
– 0.9Ω pull-up and pull-down resistance minimizes switching loss as the MOSFET transitions through the Miller Plateau.
– Increased system reliability: Inputs support -10V of direct current, and allows direct interface to gate-driver transformers without the need for rectification diodes.
TI also introduced what it says is the industry’s 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, 6-ns rise time with 1-ns output delay matching. The driver, which supports 4.5 to 18V operating voltages, has the flexibility to combine both outputs to drive up to 10A applications, such as motor drive systems.
Key technical features of the UCC27524 include:
– High-current and high-performance: 5-A peak source and sink drive currents with high efficiency. Support a 4.5-V to 18-V input range. Both outputs can be paralleled for higher current drive.
– Extremely fast: 12-ns typical propagation delay, 6-ns typical rise time with only 1-ns typical output delay matching between two channels.
– Small size: Industry standard 8-pin SOIC and PDIP packages.
The UCC27210 and UCC27211 are available in an 8- or 10-pin, 4 x 4mm 8-pin SON and an 8-pin SOIC package. The UCC27524 comes in industry-standard 8-pin SOIC and PDIP packages. A 3 x 3mm, 8-pin WSON will be available later in the first quarter. Suggested resale pricing for the UCC27210/1 is $1.50 in 1,000-unit quantities and $0.70 for the UCC27524.
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