홈 전원 관리 AC/DC & DC/DC controllers (external FET)
홈
전원 관리
AC/DC & DC/DC controllers (external FET)

LM5146-Q1

활성

넓은 듀티 사이클 범위를 가진 오토모티브 100V 동기 벅 DC-DC 컨트롤러

지금 주문
데이터시트

LM5146-Q1

활성
데이터시트 지금 주문

제품 상세 정보

Vin (min) (V) 5.5 Vin (max) (V) 100 Iout (max) (A) 30 Operating temperature range (°C) -40 to 150 Control mode Voltage mode Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 60 Iq (typ) (A) 0.00175 Duty cycle (max) (%) 99
Vin (min) (V) 5.5 Vin (max) (V) 100 Iout (max) (A) 30 Operating temperature range (°C) -40 to 150 Control mode Voltage mode Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 60 Iq (typ) (A) 0.00175 Duty cycle (max) (%) 99
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 100 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 LM5146-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 100 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 LM5146-Q1 with WEBENCH Power Designer

The LM5146-Q1 100-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 LM5146-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-performance 48-V battery automotive applications, ADAS (surround view ECU) and HEV/EV systems.

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 LM5146-Q1 100-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 LM5146-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-performance 48-V battery automotive applications, ADAS (surround view ECU) and HEV/EV systems.

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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LM5145-Q1 활성 넓은 듀티 사이클 범위를 가진 오토모티브 75V 동기 벅 DC-DC 컨트롤러 Pin-to-pin lower Vin for lower price

기술 문서

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모두 보기11
유형 직함 날짜
* Data sheet LM5146-Q1 100-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range datasheet (Rev. B) PDF | HTML 2021/06/02
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
Functional safety information LM5146-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution (Rev. A) 2020/06/12
Technical article How to meet European Commission ADAS requirements with TI DC/DC converters PDF | HTML 2019/05/09
Application brief IC Package Features Lead to Higher Reliability in Automotive Systems 2019/02/20
Application brief Improving RF Power Amplifier Efficiency in 5G Radio Systems 2018/09/05
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

설계 및 개발

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

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 구매할 수 없습니다
시뮬레이션 모델

LM5146-Q1 PSpice Unencrypted Transient Model (Rev. A)

SNVMBL1A.ZIP (129 KB) - PSpice Model
다운로드
계산 툴

LM5146DESIGN-CALC — LM5146-Q1 동기 벅 컨트롤러 빠른 시작 설계 툴

Welcome to the LM5146-Q1 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 LM5146-Q1 95-V synchronous buck controller. As such, the user can expeditiously arrive at an optimized design to meet the (...)
사용 설명서: PDF
다운로드
거버(Gerber) 파일

LM5146-Q1 Synchronous Buck Controller Design Tool (Rev. A)

SNVC220A.ZIP (2577 KB)
다운로드
PCB 레이아웃

LM5146-Q1-EVM12V PCB Layout Files

SNVR473.ZIP (7838 KB)
다운로드
PCB 레이아웃

LM5145EVM-HD-20A PCB Layout Files

SNVR500.ZIP (1493 KB)
다운로드
레퍼런스 디자인

PMP30916 — -8V 인버팅 벅 부스트 레퍼런스 설계

이 인버팅 벅 부스트 레퍼런스 설계는 LM5146-Q1을 사용해 +9V~+56V 통신 입력에서 -8V 출력을 생성합니다. 토폴로지에 따라 컨트롤러가 네거티브 레퍼런스 되기 때문에 ENABLE 기능을 제공하기 위해 레벨 시프터를 추가했습니다. 400kHz의 스위칭 주파수는 스위칭 손실과 합리적인 보드 크기 간의 절충안입니다.
Test report: PDF
레퍼런스 디자인

PMP30600-TH — 트럭용 확장된 입력 전압 범위를 지원하는 20A 오토모티브 사전 레귤레이터 레퍼런스 설계

This reference design is a 100-W synchronous buck converter to supply automotive loads. The IC is LM5146-Q1 in fixed frequency operation at 100 kHz to ensure low noise operation. This IC (LM5146-Q1)  is designed for automotive with the ability to handle load dump for truck applications. A (...)
Test report: PDF
회로도: PDF
레퍼런스 디자인

PMP30600-TL — 트럭용 확장된 입력 전압 범위를 지원하는 10A 오토모티브 사전 레귤레이터 레퍼런스 설계

This reference design is a 50-W synchronous buck converter to supply automotive loads. The IC is LM5146-Q1 in fixed frequency operation at 250 kHz to ensure low noise operation. This IC (LM5146-Q1) is designed for automotive with the ability to handle load dump for truck applications.  A (...)
Test report: PDF
회로도: PDF
레퍼런스 디자인

PMP30600-AL — 10A 오토모티브 사전 레귤레이터 레퍼런스 설계

This reference design is a 50-W synchronous buck converter to supply automotive loads. The IC is LM5146-Q1 in fixed frequency operation at 400 kHz to ensure low noise operation. A resistor-capacitor (RC) snubber attenuates noise in the RF band to reduce radiated emissions. To reduce system EMI, (...)
Test report: PDF
회로도: PDF
레퍼런스 디자인

PMP30600-AH — 20A 오토모티브 사전 레귤레이터 레퍼런스 설계

This reference design is a 100-W synchronous buck converter to supply automotive loads. The IC is LM5146-Q1 in fixed frequency operation at 250 kHz to ensure low noise operation. A resistor-capacitor (RC) snubber attenuates noise in the RF band to reduce radiated emissions. To reduce system EMI, (...)
Test report: PDF
회로도: PDF
패키지 핀 다운로드
VQFN (RGY) 20 옵션 보기
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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