GREEN Rectifier Controller Device (Rev. B)0 pages

UCC24610
VD GATE VS TON EN/TOFF GND
SYNC VCC
– +
5 V
Out
8 5 7 3 2 6
1 4
UDG-10079
UDG-10096
UCC24610
VD GATE VS TON EN/TOFF GND
SYNC
VCC
8 5 7 3 2 6
4
1
UCC24610
VD GATE VS TON EN/TOFF GND
SYNC
VCC
8 5 7 3 2 6
4
1
5 V
5 V
12 V
OUT
V
BULK
UCC24610
www.ti.com SLUSA87B –AUGUST 2010–REVISED SEPTEMBER 2010
GREEN Rectifier™ Controller Device
Check for Samples: UCC24610
1FEATURES DESCRIPTION
2• Secondary-Side Controller Optimized for 5-V This GREEN Rectifier™ controller is a
Systems high-performance controller and driver for standard
• Up to 600-kHz Operating Frequency and logic-level N-channel MOSFET power devices
• V used for low-voltage secondary-side synchronous DS MOSFET-Sensing rectification.
• 1.6-Ù Sink, 2.0-Ù Source Gate-Drive
Impedances The combination of controller and MOSFET emulates
a near-ideal diode rectifier. This solution not only
• Micro-Power Sleep Current for 90+ Designs directly reduces power dissipation of the rectifier but
• Automatic Light-Load Management also indirectly reduces primary-side losses as well,
• Synchronous Wake-Up From Sleep and due to compounding of efficiency gains.
Light-Load Modes Using drain-to-source voltage sensing, the
• Protection Features on Programming Inputs UCC24610 is ideal for Flyback and LLC-resonant
• SYNC Input for CCM Operation power supplies but can also be used with other power
architectures. The UCC24610 is optimized for output
• 20-ns Typical Turn-Off Propagation Delay voltages from 4.5 V to 5.5 V, and is suitable for use
• Improved Efficiency and Design Flexibility with lower and higher output voltages as well.
Over Traditional Diode Solution The UCC24610 offers a programmable
• May Be Biased Directly From 5-V Output false-triggering filter, a programmable timer to
• Minimal Component Count automatically switch to Light-Load Mode at light load,
and a SYNC input for optional use in Continuous
APPLICATIONS Conduction Mode (CCM) systems. Protection
features on TON and EN/TOFF pins prevent
• AC/DC 5-V Adapters run-away on-time due to open-circuit or short-circuit
• 5-V Bias Supplies fault conditions.
• Low Voltage Rectification Circuits This device is available in an 8-pin SOIC package
• Flyback and LLC Converters and an 8-pin, 3-mm x 3-mm QFN package with
PowerPad™.
TYPICAL APPLICATIONS LLC-Resonant Half Bridge
Flyback Topology
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2GREEN Rectifier, PowerPad are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Copyright © 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.