전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)

LM5145-Q1

활성

넓은 듀티 사이클 범위를 가진 오토모티브 75V 동기 벅 DC-DC 컨트롤러

제품 상세 정보

Vin (min) (V) 5.5 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Control mode Voltage mode Topology Buck Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 60 Features Adjustable current limit, Enable, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1800 Duty cycle (max) (%) 99 Number of phases 1 TI functional safety category Functional Safety-Capable
Vin (min) (V) 5.5 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Control mode Voltage mode Topology Buck Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 60 Features Adjustable current limit, Enable, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1800 Duty cycle (max) (%) 99 Number of phases 1 TI functional safety category Functional Safety-Capable
VQFN (RGY) 20 15.75 mm² 4.5 x 3.5
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient temperature range
  • Functional Safety-Capable
  • Versatile synchronous buck DC/DC controller
    • Wide input voltage range of 5.5 V to 75 V
    • 150°C maximum junction temperature
    • 0.8-V reference with ±1% feedback accuracy
    • Adjustable output voltage from 0.8 V to 60 V
    • 40-ns tON(min) for high VIN / VOUT ratio
    • 140-ns tOFF(min) for low dropout
    • Lossless RDS(on) or shunt current sensing
    • Optimized for CISPR 25 Class 5 requirements
  • Switching frequency from 100 kHz to 1 MHz
    • SYNC in and SYNC out capability
    • Selectable diode emulation or FPWM
  • 7.5-V gate drivers for standard VTH MOSFETs
    • 14-ns adaptive dead-time control
    • 2.3-A source and 3.5-A sink capability
  • Inherent protection features for robust design
    • Adjustable output voltage soft start
    • Hiccup-mode overcurrent protection
    • Input UVLO with hysteresis
    • VCC and gate-drive UVLO protection
    • Precision enable input and open-drain PGOOD indicator for sequencing and control
    • Thermal shutdown protection with hysteresis
  • 20-pin VQFN package with wettable flanks
  • Create a custom design using the LM5145-Q1 with WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient temperature range
  • Functional Safety-Capable
  • Versatile synchronous buck DC/DC controller
    • Wide input voltage range of 5.5 V to 75 V
    • 150°C maximum junction temperature
    • 0.8-V reference with ±1% feedback accuracy
    • Adjustable output voltage from 0.8 V to 60 V
    • 40-ns tON(min) for high VIN / VOUT ratio
    • 140-ns tOFF(min) for low dropout
    • Lossless RDS(on) or shunt current sensing
    • Optimized for CISPR 25 Class 5 requirements
  • Switching frequency from 100 kHz to 1 MHz
    • SYNC in and SYNC out capability
    • Selectable diode emulation or FPWM
  • 7.5-V gate drivers for standard VTH MOSFETs
    • 14-ns adaptive dead-time control
    • 2.3-A source and 3.5-A sink capability
  • Inherent protection features for robust design
    • Adjustable output voltage soft start
    • Hiccup-mode overcurrent protection
    • Input UVLO with hysteresis
    • VCC and gate-drive UVLO protection
    • Precision enable input and open-drain PGOOD indicator for sequencing and control
    • Thermal shutdown protection with hysteresis
  • 20-pin VQFN package with wettable flanks
  • Create a custom design using the LM5145-Q1 with WEBENCH Power Designer

The LM5145-Q1 75-V synchronous buck controller regulates from a high input voltage source or from an input rail subject to high-voltage transients, minimizing the need for external surge suppression components. A high-side switch minimum on-time of 40 ns gives large step-down ratios, enabling the direct step-down conversion from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5145-Q1 continues to operate during input voltage dips as low as 5.5 V, at nearly 100% duty cycle if needed, making it an excellent choice for high-power automotive DC/DC regulators, automotive motor drives, and HEV/EV power compliant to LV-148.

Forced-PWM (FPWM) operation eliminates switching frequency variation to minimize EMI, while user-selectable diode emulation lowers current consumption at light-load conditions. The adjustable switching frequency as high as 1 MHz can be synchronized to an external clock source to eliminate beat frequencies in noise-sensitive applications.

The LM5145-Q1 75-V synchronous buck controller regulates from a high input voltage source or from an input rail subject to high-voltage transients, minimizing the need for external surge suppression components. A high-side switch minimum on-time of 40 ns gives large step-down ratios, enabling the direct step-down conversion from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5145-Q1 continues to operate during input voltage dips as low as 5.5 V, at nearly 100% duty cycle if needed, making it an excellent choice for high-power automotive DC/DC regulators, automotive motor drives, and HEV/EV power compliant to LV-148.

Forced-PWM (FPWM) operation eliminates switching frequency variation to minimize EMI, while user-selectable diode emulation lowers current consumption at light-load conditions. The adjustable switching frequency as high as 1 MHz can be synchronized to an external clock source to eliminate beat frequencies in noise-sensitive applications.

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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
LM5145 활성 광범위한 입력 전압과 듀티 사이클 범위를 지원하는 75V 동기 벅 컨트롤러 Pin-to-pin, non-automotive equivalent
LM5146 활성 넓은 듀티 사이클 범위를 가진 100V 동기 벅 DC-DC 컨트롤러 Pin-to-pin, higher input voltage protection
LM5146-Q1 활성 넓은 듀티 사이클 범위를 가진 오토모티브 100V 동기 벅 DC-DC 컨트롤러 Pin-to-pin, automotive qualified, higher input voltage protection

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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10개 모두 보기
유형 직함 날짜
* Data sheet LM5145-Q1 Automotive 75-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range datasheet (Rev. A) PDF | HTML 2021/06/08
Application note Controller to Converter – Design Considerations for 24V and 48V Systems PDF | HTML 2024/10/02
Functional safety information LM5145-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2021/06/23
E-book An Engineer’s Guide to Low EMI in DC/DC Regulators 2021/04/21
EVM User's guide LM5146-Q1EVM User's Guide 2018/08/10
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
EVM User's guide LM5145EVM-HD-20A High Density Evaluation Module (Rev. A) 2017/06/07
Application note Creating a Dual USB Universal Car Charger From the TPS40170 and Two TPS2511 2012/05/22

설계 및 개발

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평가 보드

LM5145EVM-HD-20A — LM5145 넓은 VIN 동기 벅 컨트롤러 고밀도 평가 모듈

The LM5145EVM-HD-20A high density evaluation module (EVM) is designed to showcase the performance of the LM5145 high performance, synchronous buck DC-DC buck controller with wide input voltage range. The design is packaged in a miniature footprint with low component count. It operates over a wide (...)
사용 설명서: PDF
TI.com에서 구매 불가
평가 보드

LM5146-Q1-EVM12V — 동기 벅 컨트롤러 평가 모듈

The LM5146-Q1-EVM12V high density evaluation module (EVM) is designed to showcase the performance of the LM5146-Q1 high performance, synchronous buck DC-DC buck controller with wide input voltage range. The design is packaged in a miniature footprint with low component count. It operates over a (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM5145-Q1 PSpice Unencrypted Transient Model Package

SNVMC66.ZIP (301 KB) - PSpice Model
계산 툴

LM5145DESIGN-CALC LM5145 Quickstart Design Tool

Welcome to the LM5145 Quickstart Design Tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator based on the LM5145 75V synchronous buck controller. As such, the user can expeditiously arrive at an optimized design to meet the (...)

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
AC/DC 및 DC/DC 컨트롤러(외장 FET)
LM5145 광범위한 입력 전압과 듀티 사이클 범위를 지원하는 75V 동기 벅 컨트롤러 LM5145-Q1 넓은 듀티 사이클 범위를 가진 오토모티브 75V 동기 벅 DC-DC 컨트롤러
하드웨어 개발
평가 보드
LM5145EVM-HD-20A LM5145 넓은 VIN 동기 벅 컨트롤러 고밀도 평가 모듈
소프트웨어
계산 툴
LM5145DESIGN-CALC LM5145 동기 벅 컨트롤러 설계 툴
PCB 레이아웃

LM5146-Q1-EVM12V PCB Layout Files

SNVR473.ZIP (7838 KB)
PCB 레이아웃

LM5145EVM-HD-20A PCB Layout Files

SNVR500.ZIP (1493 KB)
패키지 CAD 기호, 풋프린트 및 3D 모델
VQFN (RGY) 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

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