Controller improves power supply efficiency

Texas Instruments Inc. introduces a new power management controller and driver for standard and logic-level N-channel MOSFETs used for low-voltage, secondary-side synchronous rectification.

Jan. 11, 2011

Texas Instruments Inc. introduces a new power management controller and driver for standard and logic-level N-channel MOSFETs used for low-voltage, secondary-side synchronous rectification. The UCC24610 Green Rectifier controller improves power supply efficiency as much as 5%, and reduces primary-side power loss in 5-V ac-dc adapters and bias supplies.

The 600-kHz UCC24610 Green Rectifier provides power-saving features and design flexibility not available from traditional diode rectifier solutions. Its micro-sleep current, automatic light-load management and synchronous wake-up features help maximize efficiency. The UCC24610 uses drain-to-source voltage sensing to support flyback and LLC resonant converters, as well as other power architectures, to give designers greater flexibility.

Key features and benefits of UCC24610:

Small size and minimal external component count
High performance and efficiency: Micro-power sleep current, automatic light-load management, and synchronous wake-up from light-load conditions
System protection: Device will shut down MOSFET if short or excessive “on time” occurs
Design flexibility: Can be biased directly for a 5-V output without external regulator

For more information, contact Texas Instruments Inc., 12500 TI Blvd., Dallas, TX 75243. Phone: (972) 644-5580.