TPS40422RSBR

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The TPS40422RSBR is a low-side synchronous buck controller from Texas Instruments. It is a DC-DC switching controller with several voltage regulating features. It is a part of Texas Instruments’ powerful energy efficiency portfolio, and as such, is designed for applications that require high-efficiency and power savings.

Features of TPS40422RSBR

This controller is rated for a maximum power of 32V and has a few important features that make it stand out.

• Excellent load regulation: The load regulation on the TPS40422RSBR is adjustable. It supports a wide input voltage range, from 3V to 30V. Additionally, it has a fast transient response time that can compensate for quick changes in load current.
• Current Sensing and Protection: This controller has an integrated current sense circuit. It can detect changes in current and will automatically adjust the output voltage accordingly. It also has protection features such as overcurrent and overtemperature protection.
• Selectable Current Limit and Soft Start: The TPS40422RSBR allows users to adjust the current limit and select the desired buck voltage. It also has a soft start feature that helps the controller gradually bring up the voltage without overstressing components.

TPS40422RSBR Application Field and Working Principle

The TPS40422RSBR is designed for DC-DC downregulation applications that require high efficiency and power savings. It is ideal for applications such as power supplies, point-of-load regulators, and onboard core devices. It is also suitable for automotive applications such as battery charging, power tool charging, and motor control.

The TPS40422RSBR uses a synchronous buck-converter topology. In this type of converter, an inductor is used to store energy which is then transferred to the output during the off-time of the switch. The output voltage is controlled by varying the on-time of the switch, which is regulated by a pulse-width modulator (PWM) circuit. The circuit allows the controller to automatically adjust the output voltage based on the load current and input voltage.

The controller also has an integrated current sense circuit which monitors changes in output current. This allows the controller to make instant adjustments to the output voltage as necessary. Additionally, the controller has an adjustable current limit setting which can be used to protect the system against overcurrent conditions. The TPS40422RSBR also has other protection features such as overtemperature and overvoltage protection.

Conclusion

The TPS40422RSBR is a low-side synchronous buck controller from Texas Instruments. It is a DC-DC switching controller with several voltage regulating features, and is designed for applications that require high-efficiency and power savings. It uses a synchronous buck-converter topology, and has an integrated current sense circuit that measures the load current and makes instant adjustments to the output voltage as necessary. Additionally, it has several protection features such as overtemperature and overvoltage protection. The TPS40422RSBR is well suited for DC-DC downregulation applications that do not require complex control schemes.

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