전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)

LM5141

활성

저 Iq, 넓은 입력 범위의 동기 벅 컨트롤러

제품 상세 정보

Rating Catalog Topology Buck Vin (max) (V) 65 Vin (min) (V) 3.8 Iout (max) (A) 30 Control mode current mode Vout (max) (V) 15 Vout (min) (V) 1.5 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 35 Duty cycle (max) (%) 96 Number of phases 1 EMI features Spread Spectrum
Rating Catalog Topology Buck Vin (max) (V) 65 Vin (min) (V) 3.8 Iout (max) (A) 30 Control mode current mode Vout (max) (V) 15 Vout (min) (V) 1.5 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 35 Duty cycle (max) (%) 96 Number of phases 1 EMI features Spread Spectrum
VQFN (RGE) 24 16 mm² 4 x 4
  • –40ºC to +125ºC Ambient Operating Temperature Range
  • An AEC-Q100 Qualified Device is Available
  • VIN 3.8 V to 65 V (70 V Absolute Maximum)
  • Output: Fixed 3.3 V, 5 V, or Adjustable From
    1.5 V - 15 V with ±0.8% Accuracy
  • Fixed 2.2 MHz or 440 kHz Switching Frequency with ±5% Accuracy
  • High-Side and Low-Side Gate Drive With Slew Rate Control
  • Optional Frequency Shift by Varying an Analog Voltage or RT Resistor
  • Optional Synchronization to an External Clock
  • Optional Spread Spectrum
  • Shutdown Mode IQ: 10 µA Typical
  • Low Standby Mode IQ: 35 µA Typical
  • 75 mV Current Limit Threshold with ±0.9% Accuracy
  • External Resistor or DCR Current Sensing
  • Output Enable Logic Input
  • Hiccup Mode for Sustained Overload
  • Power Good Indication Output
  • Selectable Diode Emulation or Forced Pulse Width Modulation
  • QFN-24 Package with Wettable Flanks
  • Create a Custom Design Using the LM5141 With the WEBENCH® Power Designer
  • –40ºC to +125ºC Ambient Operating Temperature Range
  • An AEC-Q100 Qualified Device is Available
  • VIN 3.8 V to 65 V (70 V Absolute Maximum)
  • Output: Fixed 3.3 V, 5 V, or Adjustable From
    1.5 V - 15 V with ±0.8% Accuracy
  • Fixed 2.2 MHz or 440 kHz Switching Frequency with ±5% Accuracy
  • High-Side and Low-Side Gate Drive With Slew Rate Control
  • Optional Frequency Shift by Varying an Analog Voltage or RT Resistor
  • Optional Synchronization to an External Clock
  • Optional Spread Spectrum
  • Shutdown Mode IQ: 10 µA Typical
  • Low Standby Mode IQ: 35 µA Typical
  • 75 mV Current Limit Threshold with ±0.9% Accuracy
  • External Resistor or DCR Current Sensing
  • Output Enable Logic Input
  • Hiccup Mode for Sustained Overload
  • Power Good Indication Output
  • Selectable Diode Emulation or Forced Pulse Width Modulation
  • QFN-24 Package with Wettable Flanks
  • Create a Custom Design Using the LM5141 With the WEBENCH® Power Designer

The LM5141 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 LM5141 features slew rate control to simplify the compliance with EMI requirements.

The LM5141 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 LM5141 operates in skip cycle mode for improved low power efficiency. The LM5141 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.

The LM5141 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 LM5141 features slew rate control to simplify the compliance with EMI requirements.

The LM5141 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 LM5141 operates in skip cycle mode for improved low power efficiency. The LM5141 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.

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기술 자료

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14개 모두 보기
유형 직함 날짜
* Data sheet LM5141 Wide Input Range Synchronous Buck Controller datasheet PDF | HTML 2017/02/02
Application note Controller to Converter – Design Considerations for 24V and 48V Systems PDF | HTML 2024/10/02
Functional safety information LM5141 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
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021/04/08
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
EVM User's guide LM5141-Q1 EVM User’s Guide (Rev. A) 2018/01/10
Application brief Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout 2017/11/13
Technical article Create a power supply for an MRI application PDF | HTML 2017/08/14
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
Application note Precision Output Current Limiting Using Average Current Monitor Feature 2011/06/21

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

LM5141QRGEVM — LM5141QRG 동기 벅 컨버터 평가 모듈

The LM5141QRGEVM evaluation board provides a fully functional buck power supply, employing peak current mode control. The evaluation board provides a 5.0V @ 5A. The nonomal input voltage range is 8V-18V.
사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM5141-Q1 and LM25141-Q1 PSpice Transient Model (Rev. A)

SNVMAU4A.ZIP (123 KB) - PSpice Model
계산 툴

LM5141DESIGN-CALC LM5141-Q1 controller quickstart design tool

Welcome to the LM5141-Q1 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM5141-Q1 65-V synchronous buck DC/DC controller with low IQ. As such, the user can expeditiously arrive at an optimized design (...)
지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
AC/DC 및 DC/DC 컨트롤러(외장 FET)
LM5141 저 Iq, 넓은 입력 범위의 동기 벅 컨트롤러 LM5141-Q1 오토모티브 넓은 입력 2.2MHz 저 IQ 동기 벅 컨트롤러
하드웨어 개발
평가 보드
LM5141QRGEVM LM5141QRG 동기 벅 컨버터 평가 모듈
레퍼런스 디자인

TIDEP-01022 — 게이트웨이 오토모티브 레퍼런스 설계

자동차 트렌드는 빠르게 진화하고있으며, 그 결과 차량 내부로 들어오고 이동하며 클라우드로 전송되는 계속 증가하는 데이터를 효율적으로 처리하기 위해 새로운 도메인 및 영역 기반 게이트웨이 아키텍처가 사용되고 있습니다. 올바르게 작동하는 도메인(또는 영역) 게이트웨이는 기능 도메인/영역 내의 ECU와 중앙 집중식 게이트웨이 간의 데이터 이동을 안전하게 지원합니다. 중앙 집중식 게이트웨이는 차량의 수많은 도메인/영역 간에 데이터를 안전하게 이동합니다.

이 TIDEP-01022 차량용 게이트웨이 레퍼런스 설계(GCARD)는 중앙 집중식 (...)

Design guide: PDF
회로도: PDF
패키지 CAD 기호, 풋프린트 및 3D 모델
VQFN (RGE) 24 Ultra Librarian

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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