TPS51117PW

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TPS51117PW application field and working principle

The TPS51117PW is a automotive, synchronous buck-voltage regulator controller with a wide input voltage range and high integration level.

It features pulse-width modulation (PWM) control to provide accurate voltage regulation, excellent current-limit accuracy, and fast transient response.

The input range of the TPS51117PW is from 4.5 V to 24 V, allowing it to be used in a wide variety of automotive applications, including battery-powered automotive systems, starting systems, and engine control systems.

Independent Enable pins for the PWM and Sync control can be used to reduce overall voltage drop and minimize the effects of input variations. The Enable pins are controlled through an internal suspend detector and can be used to reduce overall system power when not in use.

The PWM and Sync outputs of the TPS51117PW can be synchronized with other controllers, allowing for the creation of low-power systems that can be controlled in the background. The PWM and Sync outputs are enabled by digital logic, and can be used to control voltage, current, and frequency.

The TPS51117PW features a current-sense amplifier that can be used to accurately sense the current drawn from the output, allowing for precise power management. The current-sense amplifier can be used to measure both the output current and the output voltage.

In addition, the TPS51117PW integrates a pull-low feature that allows for the stalling of the switching operation in case of rising input voltage. This feature helps to reduce the risk of damage to the system in case of over-voltage protection or power supply reset.

The TPS51117PW is part of the PMIC (Power Management Integrated Circuits) family, under the DC/DC switching controllers product line. DC/DC switching controllers are used to control voltage, current, and frequency in order to ensure power conversion efficiency in a variety of automotive, industrial, and consumer products.

These controllers are typically integrated with a power FET, and can be used to step down or up the voltage, depending on the application. The TPS51117PW’s wide input voltage range, integrated current amplifier, and pull-low capability make it a perfect choice for automotive, industrial, and consumer applications.

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