LT3641IFE#PBF

LT3641IFE#PBF Application Field and Working Principle

The LT3641IFE#PBF is a monolithic multi-output step-down switching regulator, providing highly efficient, high power converting operation in a low-profile DFN 5mm x 6mm package. The LT3641IFE#PBF is a buck regulator that offers a wide operating range of 3.3V to 40V, making it ideal for applications including distributed power architecture and contactless power solutions. It is designed to be used in combination with high-efficiency input protection circuitry, such as an LTM8012 DC-DC regulator, for a superior solution in the automotive power market. The LT3641IFE#PBF is capable of providing high power density and efficiency at low cost.

The LT3641IFE#PBF offers a wide operating range from 3.3V to 40V and is designed to provide very high-efficiency conversions for applications requiring power levels up to 10A. It is a highly integrated switching regulator with an integrated P-channel MOSFET, synchronous rectifier, and programmable current limit. It also includes output overvoltage protection and a reverse current limit feature to protect against reverse current leakage. The LT3641IFE#PBF offers a wide range of control options, including dynamic control of the switching frequency and dynamic control of the output voltage.

The working principle of the LT3641IFE#PBF is simple. It consists of two sections, the primary side and the secondary side. The primary side consists of a switching transistor and a transformer, while the secondary side consists of an inductor and a flyback rectifier. The device works using a 4-Switch Buck-Boost topology in which the main MOSFET is used to step-down the input voltage to a lower regulated voltage by switching the input current at a given frequency. This process is then followed by the output voltage that is conditioned by the boost converter.

The LT3641IFE#PBF is an efficient and versatile voltage regulator with a wide operating range and a variety of control options. It is ideal for applications that require high power density and efficiency at low cost. The use of an LTM8012 DC-DC regulator in combination with the LT3641IFE#PBF makes for a superior solution for the automotive power market.