홈 전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)
홈
전원 관리
AC/DC 및 DC/DC 컨트롤러(외장 FET)

LM5119

활성

5.5~65V 넓은 입력 전압 범위, 전류 모드 듀얼 동기형 벅 컨트롤러

지금 주문
데이터 시트

LM5119

활성
데이터 시트 지금 주문

제품 상세 정보

Vin (min) (V) 5.5 Vin (max) (V) 65 Iout (max) (A) 15 Operating temperature range (°C) -40 to 125 Control mode current mode Topology Multiphase Rating Catalog Vout (min) (V) 0.8 Vout (max) (V) 64 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 6000 Duty cycle (max) (%) 98 Number of phases 2
Vin (min) (V) 5.5 Vin (max) (V) 65 Iout (max) (A) 15 Operating temperature range (°C) -40 to 125 Control mode current mode Topology Multiphase Rating Catalog Vout (min) (V) 0.8 Vout (max) (V) 64 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 6000 Duty cycle (max) (%) 98 Number of phases 2
WQFN (RTV) 32 25 mm² 5 x 5
  • Emulated Peak Current Mode Control
  • Wide Operating Range (5.5 V to 65 V)
  • Easily Configurable for Dual Outputs or Interleaved Single Output
  • Robust 3.3-A Peak Gate Drive
  • Switching Frequency Programmable to 750 kHz
  • Optional Diode Emulation Mode
  • Programmable Output from 0.8 V
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Hiccup Mode Overload Protection
  • Programmable Soft-Start
  • Programmable Line Undervoltage Lockout
  • Automatic Switch-Over to External Bias Supply
  • Channel2 Enable Logic Input
  • Thermal Shutdown
  • Leadless 32-Pin WQFN Package
  • Emulated Peak Current Mode Control
  • Wide Operating Range (5.5 V to 65 V)
  • Easily Configurable for Dual Outputs or Interleaved Single Output
  • Robust 3.3-A Peak Gate Drive
  • Switching Frequency Programmable to 750 kHz
  • Optional Diode Emulation Mode
  • Programmable Output from 0.8 V
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Hiccup Mode Overload Protection
  • Programmable Soft-Start
  • Programmable Line Undervoltage Lockout
  • Automatic Switch-Over to External Bias Supply
  • Channel2 Enable Logic Input
  • Thermal Shutdown
  • Leadless 32-Pin WQFN Package

The LM5119 device is a dual synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control using an emulated current ramp. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting and ease-of-loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The switching frequency is programmable from 50 kHz to 750 kHz. The LM5119 device drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A high voltage bias regulator with automatic switch-over to external bias further improves efficiency. Additional features include thermal shutdown, frequency synchronization, cycle-by-cycle and hiccup mode current limit and adjustable line undervoltage lockout. The device is available in a power enhanced leadless 32-pin WQFN package featuring an exposed die attach pad to aid thermal dissipation.

The LM5119 device is a dual synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control using an emulated current ramp. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting and ease-of-loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The switching frequency is programmable from 50 kHz to 750 kHz. The LM5119 device drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A high voltage bias regulator with automatic switch-over to external bias further improves efficiency. Additional features include thermal shutdown, frequency synchronization, cycle-by-cycle and hiccup mode current limit and adjustable line undervoltage lockout. The device is available in a power enhanced leadless 32-pin WQFN package featuring an exposed die attach pad to aid thermal dissipation.
filter 기타 AC/DC 및 DC/DC 컨트롤러(외장 FET) 찾기
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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
LM25119 활성 4.5~42V 넓은 입력 전압 범위, 전류 모드 듀얼 동기 벅 컨트롤러 Lower Vin max at 42 V

기술 자료

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16개 모두 보기
유형 직함 날짜
* Data sheet LM5119 Wide Input Range Dual Synchronous Buck Controller datasheet (Rev. I) PDF | HTML 2018/01/29
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 2023/08/29
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019/04/10
White paper Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 2018/07/03
More literature LM5119, LM25119 Quick Start Calculator (Rev. B) 2017/02/03
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016/07/21
Technical article Power Tips: The ground plane – a critical element in noise management of switching PDF | HTML 2015/08/19
Technical article Power Tips: Design considerations for a four-phase 1,200W synchronous buck – part PDF | HTML 2015/07/15
Technical article Power Tips: Four-phase, 1.2-kW design achieves high efficiency at higher currents PDF | HTML 2015/06/10
White paper Power Management IC (PMIC) Guide for Automotive (Rev. A) 2014/10/29
More literature LM5119 and LM25119 Design tool 2014/02/26
White paper Wide VIN power management ICs simplify white paper (Rev. A) 2013/09/19
User guide AN-2065 LM5119 Evaluation Board (Rev. B) 2013/04/24
User guide AN-2103 LM5117 Evaluation Board (Rev. B) 2013/04/24
Analog Design Journal 1Q 2012 Issue Analog Applications Journal 2012/01/31
Analog Design Journal Benefits of a multiphase buck converter 2012/01/31

설계 및 개발

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

평가 보드

LM5119EVAL — LM5119 넓은 Vin 듀얼 동기식 벅 컨트롤러용 평가 보드

The LM5119EVAL evaluation board provides the design engineer with a fully functional dual output buck converter, employing the LM5119 Dual Emulated Current Mode Synchronous Buck Controller. The evaluation board is designed to provide both 10V and 5V outputs over an input range of 14V to 55V. Also (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM5119 PSpice Transient Model

SNVM383.ZIP (227 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM5119 Unencrypted PSpice Transient Model

SNVM961.ZIP (4 KB) - PSpice Model
다운로드
계산 툴

LM25119-5119QUICK-CALC — LM(2)5119 빠른 시작 계산기

다운로드
레퍼런스 디자인

PMP30464 — 공간이 제한된 애플리케이션을 위한 96W/180W 피크 듀얼 인터리브 벅 컨버터 레퍼런스 설계

This is a dual, interleaved buck converter reference design, which covers an input voltage range of 17.0 V to 60.0 V. The output voltage is 12.0 V with a maximum load current of 15.0 A. The design has been space optimized and supports an average load current of 8.0 A.
Test report: PDF
회로도: PDF
레퍼런스 디자인

PMP20804 — 엔터프라이즈 시스템 서버를 위한 쿼터 브릭 이중 위상 동기 벅 컨버터 레퍼런스 설계

PMP20804 is a dual-phase synchronous buck converter reference design utilizing the LM5119 dual synchronous buck controller I.C. The design accepts an input voltage of 20V to 40V and provides a 12V output capable of supplying 33A of current to the load. This represents a power density design (...)
Test report: PDF
회로도: PDF
레퍼런스 디자인

PMP30168 — 24VDC 입력, 12VDC 출력을 지원하는 280W 차량용 2상 동기 벅 레퍼런스 디자인

This 280W two phase synchronous buck converter for automotive applications is designed for a nominal input voltage of 24V to 28V with support for cranking (down to 18V) and load dump < 58V. It provides up to 20A output current at an output voltage of 12 to 14V, which can be set externally (...)
Test report: PDF
회로도: PDF
레퍼런스 디자인

PMP10260 — 24Vdc 입력(이중 차량 배터리) 오토모티브 다중 위상 동기 벅 레퍼런스 디자인

This high-efficiency, high-power reference design uses the LM5119 two-phase synchronous-buck controller to regulate 14.4V at 60A. This design can be used to supply single car battery power from a double battery system, often found in trucks. Features include input EMI filtering, output hot swap (...)
Test report: PDF
회로도: PDF
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
WQFN (RTV) 32 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

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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포럼 주제 모두 보기(영문)

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