The LM25141 is a synchronous buck controller, intended for high voltage wide VIN step-down converter applications. The control method is peak current mode control. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation. The LM25141 features slew rate control to simplify the compliance with EMI requirements.
The LM25141 has two selectable switching frequencies: 2.2 MHz and 440 kHz. Gate Drivers with slew rate control that can be adjusted to reduce EMI.
In light or no-load conditions, the LM25141 operates in skip cycle mode for improved low power efficiency. The LM25141 has a high voltage bias regulator with automatic switch-over to an external bias to reduce the IQ current from VIN. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup mode fault protection for sustained overload, and power good output.
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM25141 Wide Input Range Synchronous Buck Controller datasheet | PDF | HTML | 2017/02/02 |
| Functional safety information | LM25141 Functional Safety FIT Rate, Failure Mode Distribution, and Pin FMA | PDF | HTML | 2022/04/05 | |
| E-book | An Engineer’s Guide to Low EMI in DC/DC Regulators | 2021/04/21 | ||
| White paper | Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) | 2019/04/10 | ||
| White paper | An overview of radiated EMI specifications for power supplies | 2018/06/05 | ||
| White paper | An overview of conducted EMI specifications for power supplies | 2018/02/01 | ||
| Application brief | Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout | 2017/11/13 | ||
| Analog Design Journal | Designing the front-end DC/DC conversion stage to withstand automotive transient | 2017/01/18 | ||
| Analog Design Journal | Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics | 2016/07/21 |
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.
Welcome to the quickstart design tool for the LM25141 and LM25141-Q1 synchronous buck controller family. This standalone tool facilitates and assists the power-supply engineer with the design of a DC/DC buck regulator with external MOSFETs. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.