The LM5145EVM-HD-20A high density evaluation module (EVM) is designed to showcase the performance of the LM5145 high performance, synchronous buck DC-DC buck controller with wide input voltage range. The design is packaged in a miniature footprint with low component count. It operates over a wide input voltage range of 24 V to 72 V to deliver a fixed 5-V output with better than 1% setpoint accuracy and currents up to 20A. By virtue of the LM5145's minimum on-time of 40ns, operation at very low duty cycle is feasible. The LM5145 offers a full suite of protection features to ensure protection of the regulator during fault conditions. These include undervoltage lockout to ensure proper operation during voltage-sag conditions, programmable soft-start to reduce inrush current, hiccup-mode overcurrent protection and thermal shutdown. Precision enable, open-drain PGOOD indicator and SYNC IN / SYNC OUT features are also provided.
LM25145 synchronous buck controller quickstart calculator
Welcome to the quickstart design tool for the LM25145 synchronous buck controller. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator using this controller. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | EVM User's guide | LM5145EVM-HD-20A High Density Evaluation Module (Rev. A) | 07 Jun 2017 | |
| Data sheet | LM5146-Q1 100-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range datasheet (Rev. B) | PDF | HTML | 02 Jun 2021 | |
| Data sheet | LM5145 75-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range datasheet (Rev. B) | PDF | HTML | 19 Nov 2020 | |
| Certificate | LM5145EVM-HD-20A EU Declaration of Conformity (DoC) | 02 Jan 2019 | ||
| EVM User's guide | LM5146-Q1EVM User's Guide | 10 Aug 2018 | ||
| Technical article | Synchronous buck controller solutions support wide VIN performance and flexibility | PDF | HTML | 29 Jun 2017 | |
| Data sheet | LM25145 6-V to 42-V Synchronous Buck DC-DC Controller With Wide Duty Cycle Range datasheet | PDF | HTML | 22 Jun 2017 |
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LM25145 synchronous buck controller quickstart calculator
Welcome to the quickstart design tool for the LM25145 synchronous buck controller. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator using this controller. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.