TPS51218DSCR ,3V to 28V Input. 20A Synchronous Step Down Controller with DCAP? Mode for Notebook Power Supply 10-WSON -40 to 85FEATURES APPLICATIONS2• Wide Input Voltage Range: 3 V to 28 V• Notebook Computers• Output Voltage R ..
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TPS51218DSCR-TPS51218DSCT
3V to 28V Input. 20A Synchronous Step Down Controller with DCAP?Mode for Notebook Power Supply
TPS51218
www.ti.com SLUS935B –MAY 2009–REVISED FEBRUARY 2012
HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN
CONTROLLER FOR NOTEBOOK POWER SUPPLY
Checkfor Samples: TPS51218
1FEATURES APPLICATIONS Wide Input Voltage Range:3Vto 28V •
Notebook Computers Output Voltage Range: 0.7Vto 2.6V •
I/O Supplies Wide Output Load Range:0to 20A+ •
System Power Supplies Built-in 0.5% 0.7V Reference DESCRIPTION•
D-CAP™ Mode with 100-ns Load Step The TPS51218isa small-sized single buck controller
Response with adaptive on-time D-CAP™ mode. The deviceis•
Adaptive On Time Control Architecture With4 suitable for low output voltage, high current, PC
Selectable Frequency Setting system power rail and similar point-of-load (POL)
power supplyin digital consumer products.A small•
4700 ppm/°C RDS(on) Current Sensingpackage with minimal pin-count saves space on the•
Internal 1-ms Voltage Servo Softstart PCB, whilea dedicated EN pin and pre-set frequency•
Pre-Charged Start-up Capability selections minimize design effort required for new
Builtin Output Discharge designs. The skip-modeat light load condition, strong
gate drivers and low-side FET RDS(on) current sensing•
Power Good Output supports low-loss and high efficiency, overa broad•
Integrated Boost Switch
