LM5118MHX/NOPB

The LM5118MHX/NOPB (LM5118) is a dual-channel, synchronous DC/DC buck controller that provides accurate regulation with minimal component count from a wide input voltage range. The LM5118 is designed to work in a variety of circuits and operate as a dual-channel power supply for up to 150 A total load current. It is also designed to provide efficient and accurate operation in applications with load current requirements up to 30 A per channel. The synchronous operation of the LM5118 allows it to be used in DC/DC buck converters in an extremely space-efficient form factor, while the dual-channel design allows system designers to use an off-the-shelf component to increase the power density of their discrete solution.

The LM5118 comes in two flavors: the LM5118MHX is the 8-pin version, and the LM5118NOPB is the 6-pin version. Both versions provide a maximum of 150 A total load current and can handle a wide input voltage range of 4.5 V to 9.5 V. The LM5118MHX/NOPB is capable of working with both ceramic and aluminum electrolytic output capacitors.

The LM5118MHX/NOPB features an advanced architecture that simplifies the design and implementation process. The architecture of the LM5118 is composed of four main components: a high-efficiency driver, a gate driver stage, an input/output stage, and a thermal and power management circuit. The high-efficiency driver enables faster and more accurate control of the switching transistors. The gate driver stage is responsible for the switching of the low-side and high-side devices. The input/output stage uses a voltage regulator for controlling the output voltage. Finally, the thermal and power management circuit allow the device to handle a wide operating temperature range from -40 °C to 125 °C.

The LM5118MHX/NOPB features a wide array of safety features, such as under voltage and over voltage lockout, reverse input current protection, and thermal shutdown with hysteresis. It also features a slew rate control, which allows for faster switching and improved efficiency. The LM5118 also includes numerous external diagnostics, such as delta inductor current monitoring and soft start capacitor monitoring.

The LM5118MHX/NOPB is well-suited for use in DC/DC buck converters. It consists of two channels, each capable of providing up to 30 A of current, and delivers up to a total of 150 A of output current. The LM5118 utilizes a synchronous buck topology, which enables efficient operation over a wide input voltage range. The LM5118MHX/NOPB also features advanced safety features and external diagnostics, making it an ideal solution for reliable DC/DC buck converter applications.