LM5117PMHX/NOPB

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LM5117PMHX/NOPB is a high-efficiency, high-voltage integrated synchronous boost controller designed for automotive, industrial and consumer applications. It takes an input voltage between 3.3V and 36V, and provides an output voltage up to 72V with a 5A maximum output current limit. LM5117PMHX/NOPB has been designed to be sensitive to sudden current and voltage changes, and has flexible configuration options to provide an optimized balance between gate drive strength and efficiency for the most demanding applications.

Application
The LM5117PMHX/NOPB is an ideal choice for high voltage boost applications in automotive, industrial and consumer applications. It is suitable for applications such as DC-DC converters, point-of-load converters, battery chargers, LED lighting and any other application that require a boost power supply configuration.

Features
The LM5117PMHX/NOPB offers several features that make it suitable for a wide variety of applications. These features include a wide input voltage range, a high-voltage boost output, built-in current and voltage protection, wide current-sense resistor range and adjustability, high-speed PWM operation, and adjustable frequency, ramp compensation and overvoltage protection.

Working Principle
The LM5117PMHX/NOPB uses an internal PWM controller to regulate the output voltage. The controller is configured to drive an integrated N-channel MOSFET output switch. The output voltage is set with a resistor divider connected between the output and the feedback node. The output voltage is monitored by the controller and is used to regulate the output current. The current is monitored with a series resistor connected between the output of the switching MOSFET and ground. The current sense resistor is adjustable, allowing the output current limit to be changed depending on the application requirements.

The input of the LM5117PMHX/NOPB is protected against overvoltage and short-circuit conditions by an integrated overvoltage protection circuit. The circuit “cuts off” the input supply when the input voltage exceeds a certain threshold. The integrated soft-start circuit ensures a smooth start-up of the controller and helps to reduce inrush current spikes.

The LM5117PMHX/NOPB also has a built-in current-mode PWM controller. This features adjustable frequency and ramp compensation, and results in a fast settling time and excellent transient response. In addition, the LM5117PMHX/NOPB has an integrated overvoltage protection circuit that provides protection for the connected load when the output voltage exceeds a certain threshold.

The LM5117PMHX/NOPB is an ideal choice for high voltage boost applications in automotive, industrial and consumer applications. With its wide input voltage range, high-voltage boost output, current and voltage protection, wide current-sense resistor range and adjustability, fast PWM operation and adjustable frequency, ramp compensation and overvoltage protection, this device offers a complete solution for efficient and reliable power delivery.

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