TPS40051PWPRG4

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TheTPS40051PWPRG4 is a high performance integrated switching voltage regulator and DC-DC controller with synchronous rectification. The device is well suited for use as a point-of-load regulator in high current applications including networking, telecommunications, and other applications that require low output voltage and transient performance.

The TPS40051PWPRG4 is designed for a wide range of applications, and features a wide input range of 4.5V to 32V, with a nominal output voltage of 5V or 3.3V and other adjustable output voltages. It also features a peak current limit of 4A, PWM frequency of up to 1.2MHz, output current sensing, and very low quiescent current in standby mode.

The device offers low cost, high reliability, and excellent electrical performance, making it ideal for use in cost sensitive applications such as Industrial, Automotive, and Telecom.

The TPS40051PWPRG4 device is a synchronous buck controller that allows DC-DC converters to be designed with efficiency and flexibility. It uses a synchronous rectification to convert the high voltage input to a lower regulated output voltage. The controller communicates with an external power MOSFET switch through a differential low-side control pin (LXIN), and then varies the on-time of the MOSFET to regulate the output voltage.

The controller provides a regulated output voltage by comparing the output voltage feedback reference (VREF) voltage received from the external resistors with the comparator Input Voltage Slope Compensation (ISLN) voltage to select the correct duty cycle. This creates a current mode PWM with programmable frequency (FREQ) and maximum duty cycle (DMAX) points, allowing the user to select the optimum and most reliable operating conditions for their specific applications.

The device also features a variety of systems protection and diagnostic features such as over-voltage protection (OVP) and against short circuit protection. Also, undervoltage and output current monitor includes an over-temperature protection (OTP) circuit, and an inhibit pin that allows the device to enter into a very low-power sleep mode.

The TPS40051PWPRG4 is an ideal choice for point-of-load applications and has been designed to minimize size, cost and complexity while delivering high reliability, accuracy and excellent transient response. It is suitable for use in a wide range of industrial, automotive, telecommunications and networking equipment.

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