Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

DESCRIPTION The TPS51221 is a dual synchronous buck Regulator controller with 2 LDOs It is optimized for 5V/3.3V system controller, enabling designers to cost effectively complete 2-cells to 4-cells notebook system power supply. The TPS51221 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltages ranging from 4.5V to 28V, and output voltages from 1V to 12V. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The high duty (99%) operation and wide input/ output voltage range supports flexible design for small mobile PCs and a wide variety of other applications. The fixed frequency CAN be adjusted from 200 kHz to 1MHz by a resistor, and each channel runs 180 out of phase. The TPS51221 CAN also synchronize to the external Clock and the interleaving ratio CAN be adjusted by its duty. The TPS51221 is available in the 32 pin 5 5 QFN package and is specified from 40 C to 85 C. By Texas Instruments
Part Manufacturer Description Datasheet Samples
TPS51221RTVR Texas Instruments Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Power Dual Controller 32-WQFN -40 to 85
TPS51221RTVRG4 Texas Instruments DUAL SWITCHING CONTROLLER, 333kHz SWITCHING FREQ-MAX, PQCC32, 5 X 5 MM, GREEN, PLASTIC, QFN-32
TPS51221RTVT Texas Instruments Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Power Dual Controller 32-WQFN -40 to 85
TPS51221RTVTG4 Texas Instruments DUAL SWITCHING CONTROLLER, 333kHz SWITCHING FREQ-MAX, PQCC32, 5 X 5 MM, GREEN, PLASTIC, QFN-32
TPS51221 's PackagesTPS51221 's pdf datasheet
TPS51221RTVT
TPS51221RTVR




TPS51221 Pinout, Pinouts
TPS51221 pinout,Pin out
This is one package pinout of TPS51221,If you need more pinouts please download TPS51221's pdf datasheet.

TPS51221 Application circuits
TPS51221 circuits
This is one application circuit of TPS51221,If you need more circuits,please download TPS51221's pdf datasheet.


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