TPS54495PWPR Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	0.76V
Base Part Number:	TPS54495
Supplier Device Package:	16-HTSSOP
Package / Case:	16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	700kHz
Current - Output:	4A, 2A
Voltage - Output (Max):	7V
Series:	D-CAP2™, Eco-Mode™
Voltage - Input (Max):	18V
Voltage - Input (Min):	4.5V
Number of Outputs:	2
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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DCS DC Switching Regulators

DCS DC switching regulators are an important class of DC-DC converters providing a higher energy efficiency than linear voltage regulators. DC-DC converters are an essential part of any power management system, where they provide efficient power conversion between various power levels, powering a wide range of small-power electronic devices. The TPS54495PWPR is one such DC-DC converter, a buck-boost converter offering an adaptive power stage for both buck and boost topologies.

TPS54495PWPR Application Field

The TPS54495PWPR DC-DC converter from Texas Instruments is a highly efficient buck-boost switching regulator which meets the requirements of many demanding applications, such as:- Automotive, industrial and white-goods applications such as engine control, motor control and lighting;- Telecom base stations and wireline applications;- Electronic test equipment, instrumentation and medical devices;- Digital power supplies. The TPS54495PWPR converter is designed to provide high-efficiency conversion between DC power sources across a wide range of voltage rail requirements. The bi-directional feature of the buck-boost topology makes it ideal for dual-voltage systems, such as a 12V main supply and a 5V supply for a microcontroller. Additionally, the TPS54495PWPR also allows for output voltage tracking and sequencing, making it a suitable voltage regulator for powering multiple loads.

TPS54495PWPR Working Principle

At its core, the TPS54495PWPR is a buck-boost switching regulator, which utilizes an adaptive power stage to switch between buck and boost topologies in order to generate the desired output voltage. In a nutshell, the TPS54495PWPR works as follows: - The input voltage is applied to the power stage, which consists of an inductor, a switch, a diode and a capacitor; - The switch periodically connects and disconnects the load to and from the input voltage, creating a stepped waveform;- The stepped waveform is then filtered and regulated by the output capacitor and the feedback control loop, resulting in the desired output voltage. To improve efficiency, the TPS54495PWPR converter can be programmed to switch between buck and boost topology depending on the input voltage and the load conditions, allowing the converter to achieve better output voltage regulation and lower current ripple for a given input voltage. The switching frequency of the converter can also be programmed in order to optimize the size and number of components used in the design.

Conclusion

The TPS54495PWPR DC-DC converter from Texas Instruments is a highly efficient, adaptive buck-boost switching regulator that is well-suited for a wide variety of applications across many industries, from automotive and white-goods to telecom and digital power supplies. The buck-boost topology of the TPS54495PWPR allows for dual-voltage operation, output voltage tracking and sequencing, as well as improved efficiency through its adaptive power stage.

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