SNVSA47C February 2016 – December 2020 LM5165
The LM5165 only requires a few external components to convert from a wide range of supply voltages to a fixed output voltage. To expedite and streamline the process of designing of a LM5165-based converter, a comprehensive LM5165Quick-start design tool is available for download to assist the designer with component selection for a given application. WEBENCH® online software is also available to generate complete designs, leveraging iterative design procedures and access to comprehensive component databases. The following sections discuss the design procedure for both COT and PFM modes using specific circuit design examples.
As mentioned previously, the LM5165 also integrates several optional features to meet system design requirements, including precision enable, UVLO, programmable soft start, programmable switching frequency in COT mode, adjustable current limit, and PGOOD indicator. Each application incorporates these features as needed for a more comprehensive design. The application circuits detailed below show LM5165 configuration options suitable for several application use cases. Refer to the LM5165EVM-HD-C50X and LM5165EVM-HD-P50A EVM user's guides for more detail.