TPS51225BRUKT

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The TPS51225BRUKT is a synchronous, step-down controller with a rich assortment of features and functions. As a voltage regulators, the device operates in slide or forced-PWM mode and delivers precise output while providing excellent line/load/temperature and transient/dynamic response. When switch to a low-power mode, the TPS51225BRUKT operates in either stop-mode or pulse skip mode with a very low quiescent current.

The TPS51225BRUKT is suitable for a wide range of applications. It offers voltage signal conditioning from 4.75V to 24V and can handle a maximum current of 8A (typ.) with a wide range of features and functions including: under voltage protection, over voltage protection, synchronization, programmable soft-start, and programmable current limit. Additionally, it can be configured for Boost and Buck operation with zero-cross detection and programmable frequency.

As linear voltage regulators, the TPS51225BRUKT works by applying an input voltage to a series resistor or other element that applies an approximate voltage drop to the output voltage. The output voltage is usually a fraction of the input voltage resulting in a voltage regulation based upon the proportion of the input to the output. For example, a linear voltage regulator could be used to control an output voltage of 12V, regulated from an input of 15V, by using a 1.25V voltage drop across the resistor.

The TPS51225BRUKT is a switching regulator that uses an internal power transistor to regulate its output. It works by rapidly switching the power transistor on and off, and adjusting the duty cycle (ratio of on time to off time) to adjust the output voltage. The TPS51225BRUKT has high efficiency advantages over its linear counterparts, allowing for smaller heat dissipation and higher current output capabilities.

In switching regulators, the TPS51225BRUKT can be configured in either buck, boost or buck-boost modes, depending on the application. The buck (step-down) regulator is the most common, and it works by decreasing the output voltage with an increase of load current. In contrast, the boost (step-up) regulator increases the output voltage at the same time as increasing load current. The buck-boost regulator allows for both voltage dropping and voltage raising configurations.

In addition to its voltage regulation functions, the TPS51225BRUKT also has several features that provide protection against various conditions. It includes reverse-current protection, input under-voltage lockout, and output over-voltage protection. It also includes short-circuit protection, current overload protection, over-temperature protection, and over-frequency protection.

The TPS51225BRUKT is a highly versatile voltage regulator that can be used in many industrial and consumer applications. Its compact size and high efficiency make it well suited for applications in communication systems, automotive, computers, and consumer electronics. Its wide input voltage range and excellent line regulation make it ideal for automotive voltage regulators, and its over-voltage protection and current limit features provide protection against input and output over-voltage conditions. In addition, its wide frequency range and adjustable output voltage make it suitable for a variety of battery charging, switch-mode and other load regulation applications.

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