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TPS53211RGTR
Single Phase PWM Controller with Light-Load Efficiency Optimization
CSN
BOOT
PHASELGATEVCCDR
VCC
GND
COMP6
PGOOD UGATE
CSP
OSC
PVCC
Enable
Power
Good
VIN
VOUT
TPS53211
www.ti.com SLUSAA9A –SEPTEMBER 2011–REVISED NOVEMBER 2012
Single-Phase PWM Controller with Light-Load Efficiency Optimization
1FEATURES APPLICATIONS 1.5-Vto 19-V Conversion Voltage Range • Server and Desktop Computer Subsystem
Power Supplies• 4.5-Vto 14-V Supply Voltage Range DDR Memory and Termination Supply• Voltage Mode Control Distributed Power Supply• Skip Modeat Light Load for Efficiency
Optimization • General DC/DC Converter High Precision 0.5% Internal 0.8-V Reference DESCRIPTION• Adjustable Output Voltage from 0.8Vto TPS53211isa single phase PWM controller with
0.7×VIN integrated high-current drivers.Itis used for 1.5Vup
• Internal Soft-Start to19V conversion voltage.
Supports Pre-biased Startup TPS53211 features a skip mode solution that
• Supports Soft-Stop optimizes the efficiencyat light load condition without
Programmable Switching Frequency from compromising the output voltage ripple. The device
provides pre-biased startup, soft-stop, integrated
250 kHzto1 MHzbootstrap switch, power good function, EN/Input
• Overcurrent Protection UVLO protection.It supports conversion voltages up
• Inductor DCR Sensing for Overcurrent to19V, and output voltages adjustable from 0.8Vto
0.7×VIN.
• RDS(on) Sensing for Zero Current Detection Overvoltage and Undervoltage Protection The TPS53211is availablein the3 mm×3 mm, 16-
pin, QFN package (Green RoHs compliant and Pb
• Open Drain Power Good Indicationfree) andis specified from –40°Cto 85°C.
• Internal Bootstrap Switch Integrated High-Current Drivers Poweredby
VCCDR Small3 mmx3 mm, 16-Pin QFN Package
