| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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900 pcs
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900 pcs | On Request | 1 | On Request | On Request | 2014+ | On Request | On Request |
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The Texas Instruments TPS51220A is a dual synchronous buck regulator controller optimized for 5-V/3.3-V system controllers in notebook computers. It supports a wide input voltage range of 4.5 V to 32 V and output voltages from 1 V to 12 V, enabling cost-effective power supply designs for 2-cell to 4-cell notebook systems.
This controller features high efficiency, fast transient response, and 99% duty cycle operation. It offers selectable control schemes, including peak current mode for stability and D-CAP mode for fast transient response. The fixed switching frequency can be adjusted from 200 kHz to 1 MHz via a resistor, with each channel operating 180° out-of-phase. Current sensing can be achieved using a resistor or inductor DCR.
The TPS51220A includes integrated protection features such as OCL/OVP/UVP/UVLO and thermal shutdown. It also supports selectable light load operation modes (Continuous, Auto Skip, Out-Of-Audio Skip) and has an output discharge function. The device is available in a 32-pin QFN package (RTV/RSN).
Applications include notebook computer system and I/O bus power, as well as point-of-load applications in LCD TVs and MFPs.
The input voltage range is 4.5 V to 32 V.
The output voltage range is 1 V to 12 V.
The maximum duty cycle is 99%.
The switching frequency is fixed and can be adjusted from 200 kHz to 1 MHz.
The TPS51220A supports D-CAP mode and peak current mode.
The operating temperature range is -40°C to 85°C.
The TPS51220A is available in a 32-pin QFN package.