TPS62291DRVR

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	TPS62291
Supplier Device Package:	6-SON (2x2)
Package / Case:	6-WDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	2.25MHz
Current - Output:	1A
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	6V
Voltage - Input (Min):	2.3V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

TPS62291DRVR is a DC-DC switching regulator manufactured by Texas Instruments and features small footprint, high efficiency and wide adjustable output voltage range. It is part of the DC-DC switching regulators family from TI that includes many devices from boost and buck converters to inverters, controllers and linear regulators. This particular product is suitable for applications ranging from cellphones and tablets to digital media players and other consumer electronics.

Application Field

TPS62291DRVR is a high performance DC-DC switching regulator designed for switching applications in consumer electronics and automotive applications. This device is well suited for use in applications such as cellular telephones, tablet computers, digital media players, and various consumer battery powered equipment. Generally speaking, DC-DC switching regulators are employed in applications where the output voltage is adjustable, or where a wide input voltage range is required.

Working Principle

The TPS62291DRVR operates on the buck-boost switching regulator principle, which allows it to regulate both higher and lower voltages than its input voltage. Specifically, it employs a buck-boost synchronous (or non-synchronous) regulator operating as a voltage converter to supply a regulated output voltage from a higher or lower input voltage. As its name implies, the buck-boost switching regulator operates either in buck (step-down) or boost (step-up) mode, depending on whether the voltage on the input is lower or higher than the desired output voltage.In buck-mode the device integrates a high-side power switch and a low-side power switch. When the high-side switch is enabled, the voltage across the load is decreased. Likewise, when the low-side switch is enabled, the voltage across the load is increased.The TPS62291DRVR also incorporates dual-loop feedback, which provides simultaneous voltage and current regulation to minimize output voltage ripple. This makes it especially suitable for audible frequency noise sensitive applications, such as those found in cellular phones, tablets and digital media players.

Conclusion

The TPS62291DRVR from Texas Instruments is a high-performance DC-DC switching regulator with a wide adjustable output voltage range and very small footprint. Thanks to its dual-loop feedback, it provides simultaneous voltage and current regulation and is ideal for noise sensitive applications that require a low output voltage ripple. This device is part of the DC-DC switching regulators family from TI, and is ideally suited for applications in cell phones, tablets and digital media players.

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