LM5116HJD

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The LM5116HJD is a buck-boost, pulse-width modulation (PWM) controller specifically designed to control bidirectional DC-to-DC power conversion. The device can operate either in current mode or voltage mode control. The LM5116HJD also includes advanced features such as on-board power-good monitoring, dynamic voltage-adjustment, thermal current limit, and temperature-compensated current limit, which can improve robustness and efficiency.

The main application field of LM5116HJD includes use in AC-DC or DC-DC converters, particularly in industrial power system and automotive applications, LED applications, and battery charging systems. This device is suitable for input voltage and output voltage applications that require low-side or high-side N-channel MOSFETs.

Working Principle of LM5116HJD

The LM5116HJD works as a buck-boost device, providing a highly efficient and constant voltage output even when the input voltage varies over a wide range. The device achieves this by using pulse-width modulation (PWM) to control the switching of an external N-channel MOSFET. The LM5116HJD is designed to be used with a synchronous rectifier, either in buck or boost modes.

The LM5116HJD works by generating a fixed frequency, digital PWM signal. This fixed frequency signal is then used to drive the external MOSFETs in a pulsed fashion. The duty cycle of the MOSFETs can be adjusted to control the power conversion. As the input voltage increases, the PWM signal will drive the MOSFETs more frequently in order to keep the output voltage regulated within a certain range. As the input voltage decreases, the PWM signal will drive the MOSFETs less frequently in order to maintain the output voltage. By using this method, the LM5116HJD is able to convert power both buck-boost modes.

The device also includes features to enhance the performance of the power conversion. It includes an on-board power-good monitoring, as well as adjustable output current limit and temperature compensated current limit, which can be used to improve efficiency and robustness. In addition, the LM5116HJD includes dynamic voltage adjustment to accommodate changing output voltage requirements.

The LM5116HJD is an ideal device for bidirectional DC-to-DC conversion, particularly in industrial and automotive applications, LED applications, and battery charging systems. By utilizing the advanced features of the LM5116HJD, users can achieve an efficient power conversion with improved robustness and performance.

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