홈 전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)
홈
전원 관리
AC/DC 및 DC/DC 컨버터(통합 FET)

LM5181

활성

65-VIN no-opto 플라이백 컨버터(100V, 0.75A 통합 MOSFET 포함)

지금 주문
데이터 시트

LM5181

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology PSR flyback Iout (max) (A) 0.75 Vin (min) (V) 4.5 Vin (max) (V) 65 Switching frequency (min) (kHz) 12 Switching frequency (max) (kHz) 350 Features Enable, Integrated Switch, Light load efficiency, Pre-bias soft start, UVLO adjustable Control mode Peak current mode Duty cycle (max) (%) 82 Switch current limit (typ) (A) 0.75
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology PSR flyback Iout (max) (A) 0.75 Vin (min) (V) 4.5 Vin (max) (V) 65 Switching frequency (min) (kHz) 12 Switching frequency (max) (kHz) 350 Features Enable, Integrated Switch, Light load efficiency, Pre-bias soft start, UVLO adjustable Control mode Peak current mode Duty cycle (max) (%) 82 Switch current limit (typ) (A) 0.75
WSON (NGU) 8 16 mm² 4 x 4
  • Functional Safety-Capable
  • Designed for reliable and rugged applications
    • Wide input voltage range of 4.5 V to 65 V with operation down to 3.5 V after start-up
    • Robust solution with only one component crossing the isolation barrier
    • ±1.5% total output regulation accuracy
    • Optional VOUT temperature compensation
    • 6-ms internal or programmable soft start
    • Input UVLO and thermal shutdown protection
    • Hiccup-mode overcurrent fault protection
    • –40°C to +150°C junction temperature range
  • Integration reduces solution size and cost
    • Integrated 100-V, 0.4-Ω power MOSFET
    • No opto-coupler or transformer auxiliary winding required for VOUT regulation
    • Internal loop compensation
  • High-efficiency PSR flyback operation
    • Quasi-resonant MOSFET turn-off in BCM
    • Low input quiescent current
    • External bias option for improved efficiency
    • Single- and multi-output implementations
  • Ultra-low conducted and radiated EMI signatures
    • Soft switching avoids diode reverse recovery
    • Optimized for CISPR 32 EMI requirements
  • Create a custom regulator design using WEBENCH Power Designer
  • Functional Safety-Capable
  • Designed for reliable and rugged applications
    • Wide input voltage range of 4.5 V to 65 V with operation down to 3.5 V after start-up
    • Robust solution with only one component crossing the isolation barrier
    • ±1.5% total output regulation accuracy
    • Optional VOUT temperature compensation
    • 6-ms internal or programmable soft start
    • Input UVLO and thermal shutdown protection
    • Hiccup-mode overcurrent fault protection
    • –40°C to +150°C junction temperature range
  • Integration reduces solution size and cost
    • Integrated 100-V, 0.4-Ω power MOSFET
    • No opto-coupler or transformer auxiliary winding required for VOUT regulation
    • Internal loop compensation
  • High-efficiency PSR flyback operation
    • Quasi-resonant MOSFET turn-off in BCM
    • Low input quiescent current
    • External bias option for improved efficiency
    • Single- and multi-output implementations
  • Ultra-low conducted and radiated EMI signatures
    • Soft switching avoids diode reverse recovery
    • Optimized for CISPR 32 EMI requirements
  • Create a custom regulator design using WEBENCH Power Designer

The LM5181 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 65 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation.

The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 100-V power MOSFET provides output power up to 4 W with enhanced headroom for line transients.

The LM5181 flyback converter is available in a 8-pin, 4-mm × 4-mm, thermally-enhanced WSON package with 0.8-mm pin pitch.

The LM5181 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 65 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation.

The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 100-V power MOSFET provides output power up to 4 W with enhanced headroom for line transients.

The LM5181 flyback converter is available in a 8-pin, 4-mm × 4-mm, thermally-enhanced WSON package with 0.8-mm pin pitch.
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LM5180 활성 65-VIN no-opto 플라이백 컨버터(100V, 1.5A 통합 MOSFET 포함) 1.5-A current limit

기술 자료

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15개 모두 보기
유형 직함 날짜
* Data sheet LM5181 65-VIN PSR Flyback DC/DC Converter with 100-V, 0.75-A Integrated MOSFET datasheet (Rev. A) PDF | HTML 2021/01/25
Product overview Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications (Rev. A) PDF | HTML 2024/08/20
Technical article Mitigating CMTI on a PSR flyback for SiC-based traction inverter designs PDF | HTML 2024/01/05
Analog Design Journal Why use PSR‐flyback isolated converters in dual‐battery mHEV systems (Rev. A) PDF | HTML 2023/05/25
Application note Designing High Voltage Power Supply for Ultrasound Smart Probes (Rev. A) PDF | HTML 2023/05/16
Analog Design Journal Selecting output caps to optimize ripple and stability in PSR flyback converters (Rev. B) PDF | HTML 2023/05/04
Application note LM5181 Bipolar + and - 18 V Output Design for Signal Chains in PLC Applications PDF | HTML 2021/10/29
Application note Topology Selection for Isolated Power Supplies in Patient Monitor (Rev. A) PDF | HTML 2020/09/02
Functional safety information LMx518x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) PDF | HTML 2020/06/26
Technical article How to raise regulation performance with a stacked-output PSR flyback DC/DC conver PDF | HTML 2020/06/02
Analog Design Journal How an auxless PSR-flyback converter can increase PLC reliability and density 2019/09/30
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 PSR Flyback DC/DC Converter Transformer Design for mHEV Applications 2017/11/13
Application note Seminar 900 Topic 2 - Snubber Circuits: Theory, Design and Application 2001/02/15

설계 및 개발

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

평가 보드

LM5180EVM-DUAL — 넓은 VIN PSR 플라이백 컨버터 듀얼 출력 평가 모듈

The LM5180EVM-DUAL evaluation module (EVM) is designed to showcase the performance of the LM5180 PSR flyback converter 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 10 V to 65 V to deliver a (...)
사용 설명서: PDF
TI.com에서 구매 불가
평가 보드

LM5180EVM-S05 — 넓은 VIN PSR 플라이백 컨버터 단일 출력 평가 모듈

The LM5180EVM-S05 evaluation module (EVM) is designed to showcase the performance of the LM5180 PSR flyback converter 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 10 V to 65 V to deliver a (...)
사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM5181-Q1 PSpice Transient Model (Rev. A)

SNVMBZ9A.ZIP (130 KB) - PSpice Model
다운로드
계산 툴

LM5181DESIGN-CALC — LM5181 PSR Flyback Converter Quickstart Design Tool

Welcome to the LM5181 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC flyback regulator based on the LM5181 PSR flyback converter. As such, the user can expeditiously arrive at an optimized design to meet the application (...)
지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
AC/DC 및 DC/DC 컨버터(통합 FET)
LM5181 — 65-VIN no-opto 플라이백 컨버터(100V, 0.75A 통합 MOSFET 포함) LM5181-Q1 — 오토모티브 65-VIN no-opto 플라이백 DC/DC 컨버터(100V, 0.75A 통합 MOSFET 포함)
소프트웨어
계산 툴
LM5181DESIGN-CALC — LM5181 PSR 플라이백 컨버터 설계 툴
다운로드
레퍼런스 디자인

PMP31177 — 1W PSR(1차측 조정) 플라이백 레퍼런스 설계

이 보드는 크기 26.54mm × 11.68mm × 5.6mm로 LM5181 PSR 플라이백 컨버터의 성능을 활용할 수 있도록 최적화했습니다. 이 보드는 입력 전압 범위 18V~32V에서 작동하여 각각 최대 전류 40mA와 15mA에서 24V와 3.3V의 출력을 제공합니다. LM5180은 보조 권선 또는 옵토커플러 없이 작동하며, 엄격한 출력 전압 조정 기능을 제공합니다. LM5181은 전압 강하 조건에서 올바른 작동을 제공하기 위한 기준 이하 전압 차단, 돌입 전류를 줄이기 위한 프로그래밍 가능 소프트 스타트, 히컵 모드 과전류 (...)
Test report: PDF
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
WSON (NGU) 8 Ultra Librarian
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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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