TPS51220A-Q1 Series

3-V to 28-V, synchronous peak current mode buck controller for notebook power in RSN/RTV package

Catalog

3-V to 28-V, synchronous peak current mode buck controller for notebook power in RSN/RTV package

Part	Voltage - Output [Min]	Voltage - Output [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Supplier Device Package	Voltage - Input [Min]	Voltage - Input [Max]	Applications	Mounting Type	Current - Output	Supplied Contents	Utilized IC / Part	Regulator Topology	Outputs and Type	Outputs and Type	Main Purpose	Board Type	Voltage - Output	Frequency - Switching	Package / Case	Grade	Qualification
Texas Instruments TPS51220ARTVR	1 V	12 V	85 °C	-40 °C	2	32-WQFN (5x5)	4.5 V	32 V	Controller Notebook Power System	Surface Mount
Texas Instruments TPS51220EVM							8 V	20 V			6 A	Board(s)	TPS51220	Buck	2	Non-Isolated	DC/DC Step Down with LDO	Fully Populated	3.3 V 5 V	280 kHz
Texas Instruments TPS51220RHBT	1 V	12 V	85 °C	-40 °C	2	32-VQFN (5x5)	4.5 V	28 V	Controller Notebook Power System	Surface Mount											32-VFQFN Exposed Pad
Texas Instruments TPS51220ARSNT	1 V	12 V	85 °C	-40 °C	2	32-QFN (4x4)	4.5 V	32 V	Controller Notebook Power System	Surface Mount
Texas Instruments TPS51220AEVM-476							8 V	20 V			8 A	Board(s)	TPS51220A	Buck	2	Non-Isolated	DC/DC Step Down with LDO	Fully Populated	3.3 V 5 V	330 kHz
Texas Instruments TPS51220RHBR	1 V	12 V	85 °C	-40 °C	2	32-VQFN (5x5)	4.5 V	28 V	Controller Notebook Power System	Surface Mount											32-VFQFN Exposed Pad
Texas Instruments TPS51220ATRTVRQ1	1 V	12 V	105 ░C	-40 °C	2	32-WQFN (5x5)	4.5 V	32 V	Controller Notebook Power System	Surface Mount												Automotive	AEC-Q100

Catalog

3-V to 28-V, synchronous peak current mode buck controller for notebook power in RSN/RTV package

Key Features

• Qualified for Automotive ApplicationsInput Voltage Range: 4.5 V to 32 VOutput Voltage Range: 1 V to 12 VSelectable Light Load Operation(Continuous / Auto Skip / Out-Of-Audio Skip)Programmable Droop CompensationVoltage Servo Adjustable Soft Start200-kHz to 1-MHz Fixed-Frequency PWMSelectable Current/D-CAP Mode Architecture180° Phase Shift Between ChannelsResistor or Inductor DCR Current SensingAdaptive Zero Crossing CircuitPowergood Output for Each ChannelOCL/OVP/UVP/UVLO Protections(OVP Disable Option)Thermal Shutdown (Non-Latch)Output Discharge Function (Disable Option)Latch-Up exceeds 100mA per JESD78- Class IIntegrated Boot Strap MOSFET SwitchQFN-32 (RTV) PackageAPPLICATIONSI/O BusPoint of Load in LCD TV, MFPQualified for Automotive ApplicationsInput Voltage Range: 4.5 V to 32 VOutput Voltage Range: 1 V to 12 VSelectable Light Load Operation(Continuous / Auto Skip / Out-Of-Audio Skip)Programmable Droop CompensationVoltage Servo Adjustable Soft Start200-kHz to 1-MHz Fixed-Frequency PWMSelectable Current/D-CAP Mode Architecture180° Phase Shift Between ChannelsResistor or Inductor DCR Current SensingAdaptive Zero Crossing CircuitPowergood Output for Each ChannelOCL/OVP/UVP/UVLO Protections(OVP Disable Option)Thermal Shutdown (Non-Latch)Output Discharge Function (Disable Option)Latch-Up exceeds 100mA per JESD78- Class IIntegrated Boot Strap MOSFET SwitchQFN-32 (RTV) PackageAPPLICATIONSI/O BusPoint of Load in LCD TV, MFP

Description

The TPS51220A-Q1 is a dual synchronous buck regulator controller with two LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220A-Q1 supports high efficiency, fast transient response, and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 32 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the 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 1 MHz by a resistor, and each channel runs 180° out-of-phase. The TPS51220A-Q1 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220A-Q1 is available in the 32-pin 5×5/4×4 QFN package and is specified from –40°C to 105°C. The TPS51220A-Q1 is a dual synchronous buck regulator controller with two LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220A-Q1 supports high efficiency, fast transient response, and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 32 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the 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 1 MHz by a resistor, and each channel runs 180° out-of-phase. The TPS51220A-Q1 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220A-Q1 is available in the 32-pin 5×5/4×4 QFN package and is specified from –40°C to 105°C.