전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)

LM25118

활성

3 ~ 42V 와이드 Vin, 전류 모드 비동기 벅-부스트 컨트롤러

제품 상세 정보

Vin (min) (V) 3 Vin (max) (V) 42 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Catalog Vout (min) (V) 1.23 Vout (max) (V) 38 Features Enable, Frequency synchronization Iq (typ) (µA) 4500 Duty cycle (max) (%) 98
Vin (min) (V) 3 Vin (max) (V) 42 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Catalog Vout (min) (V) 1.23 Vout (max) (V) 38 Features Enable, Frequency synchronization Iq (typ) (µA) 4500 Duty cycle (max) (%) 98
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • Input Voltage Operating Range From 3 V to 42 V
  • Emulated Peak Current Mode Control
  • Smooth Transition Between Step-Down and Step-Up Modes
  • Switching Frequency Programmable to 500 KHz
  • Oscillator Synchronization Capability
  • Internal High Voltage Bias Regulator
  • Integrated High and Low-Side Gate Drivers
  • Programmable Soft-Start Time
  • Ultra-Low Shutdown Current
  • Enable Input
  • Wide Bandwidth Error Amplifier
  • 1.5% Feedback Reference Accuracy
  • Thermal Shutdown
  • Package: 20-Pin HTSSOP (Exposed Pad)
  • Create a Custom Design Using the LM25118 With the WEBENCH® Power Designer
  • Input Voltage Operating Range From 3 V to 42 V
  • Emulated Peak Current Mode Control
  • Smooth Transition Between Step-Down and Step-Up Modes
  • Switching Frequency Programmable to 500 KHz
  • Oscillator Synchronization Capability
  • Internal High Voltage Bias Regulator
  • Integrated High and Low-Side Gate Drivers
  • Programmable Soft-Start Time
  • Ultra-Low Shutdown Current
  • Enable Input
  • Wide Bandwidth Error Amplifier
  • 1.5% Feedback Reference Accuracy
  • Thermal Shutdown
  • Package: 20-Pin HTSSOP (Exposed Pad)
  • Create a Custom Design Using the LM25118 With the WEBENCH® Power Designer

The LM25118 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a high-performance, cost-efficient Buck-Boost regulator using a minimum of external components. The Buck-Boost topology maintains output voltage regulation when the input voltage is either less than or greater than the output voltage making it especially suitable for automotive applications. The LM25118 operates as a buck regulator while the input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost mode as the input voltage approaches the output. This dual-mode approach maintains regulation over a wide range of input voltages with optimal conversion efficiency in the buck mode and a glitch-free output during mode transitions. This easy-to-use controller includes drivers for the high-side buck MOSFET and the low-side boost MOSFET. The control method of the regulator is based upon current mode control using an emulated current ramp. Emulated current mode control reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of the very small duty cycles necessary in high input voltage applications. Additional protection features include current limit, thermal shutdown, and an enable input. The device is available in a power-enhanced, 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.

The LM25118 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a high-performance, cost-efficient Buck-Boost regulator using a minimum of external components. The Buck-Boost topology maintains output voltage regulation when the input voltage is either less than or greater than the output voltage making it especially suitable for automotive applications. The LM25118 operates as a buck regulator while the input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost mode as the input voltage approaches the output. This dual-mode approach maintains regulation over a wide range of input voltages with optimal conversion efficiency in the buck mode and a glitch-free output during mode transitions. This easy-to-use controller includes drivers for the high-side buck MOSFET and the low-side boost MOSFET. The control method of the regulator is based upon current mode control using an emulated current ramp. Emulated current mode control reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of the very small duty cycles necessary in high input voltage applications. Additional protection features include current limit, thermal shutdown, and an enable input. The device is available in a power-enhanced, 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.

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기술 자료

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5개 모두 보기
유형 직함 날짜
* Data sheet LM25118 Wide Voltage Range Buck-Boost Controller datasheet (Rev. F) PDF | HTML 2018/03/12
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019/04/10
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016/07/21
User guide LM25118 Evaluation Board (Rev. B) 2014/01/17

설계 및 개발

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

평가 보드

LM25118EVAL — LM25118 넓은 Vin 벅 부스트 컨트롤러용 평가 보드

The LM25118 Evaluation Board is designed to provide the design engineer with a fully functional, Emulated Current Mode Control, buck boost power converter to evaluate the LM25118 controller IC. The evaluation board provides a 12V output with 3A of output current capability. The evaluation board’s (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM25118 PSpice Transient Model (Rev. A)

SNVM212A.ZIP (74 KB) - PSpice Model
시뮬레이션 모델

LM25118 TINA-TI Load Transient Reference Design

SNVM502.TSC (152 KB) - TINA-TI Reference Design
시뮬레이션 모델

LM25118 TINA-TI Startup Transient Reference Design

SNVM501.TSC (174 KB) - TINA-TI Reference Design
시뮬레이션 모델

LM25118 TINA-TI Transient Spice Model

SNVM500.ZIP (28 KB) - TINA-TI Spice Model
시뮬레이션 모델

LM25118 Unencrypted PSpice Transient Model

SNVMAJ9.ZIP (4 KB) - PSpice Model
계산 툴

LM5118QUICK-CALC LM5118/LM25118 Quick Start Component Calculator

Quick Start Component Calculator for LM5118/LM25118 devices
지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
AC/DC 및 DC/DC 컨트롤러(외장 FET)
LM25118 3 ~ 42V 와이드 Vin, 전류 모드 비동기 벅-부스트 컨트롤러 LM25118-Q1 AEC-Q100 인증, 3~42V 넓은 입력 전압 범위, 전류 모드 비동기형 벅 부스트 컨트롤러 LM5118 3 ~ 75V의 넓은 입력 전압 범위, 전류 모드 비동기식 벅-부스트 컨트롤러 LM5118-Q1 3V~75V 넓은 입력 전압 범위, 전류 모드 비동기형 벅 부스트 컨트롤러
레퍼런스 디자인

PMP8637 — 동기 벅 3.3V @ 125mA 레퍼런스 디자인

This design is a buck-boost converter for automotive applications covering an input voltage range of 3.5 .. 35V. It provides an output voltage of 5.7V @ 1.2A.
Test report: PDF
레퍼런스 디자인

PMP8570 — 28.0V @ 2.5A 및 입력 전압 범위가 10..32V를 지원하는 2 스위치 벅 부스트 컨버터

This design is a two-switch buck boost converter which generates an output voltage of 28.0V @ 2.5A from an input voltage range of 10..32V.
Test report: PDF
패키지 CAD 기호, 풋프린트 및 3D 모델
HTSSOP (PWP) 20 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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