전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

LMR38020-Q1

활성

오토모티브 SIMPLE SWITCHER® 전원 컨버터 4.2V~80V, 2A, 동기식 벅 컨버터

제품 상세 정보

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 4.2 Vin (max) (V) 80 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed Control mode current mode Vout (min) (V) 1 Vout (max) (V) 75 Iq (typ) (A) 0.00004
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 4.2 Vin (max) (V) 80 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed Control mode current mode Vout (min) (V) 1 Vout (max) (V) 75 Iq (typ) (A) 0.00004
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • 4.2V to 80V input voltage range
    • 2A continuous output current
    • Ultra-low 40µA operating quiescent current
    • > 1.5mm distance between VIN and GND pin
    • 200kHz to 2.2MHz adjustable switching frequency
    • Frequency synchronization to external clock
    • Spread spectrum for reduced EMI
    • 97% maximum duty cycle
    • Support start-up with prebiased output
    • ±1.0% tolerance voltage reference at room temperature
    • Precision enable
    • Easy to use device with integrated compensation network enabling low BOM count
    • Integrated synchronous rectification
    • 8-pin HSOIC with PowerPAD™ integrated circuit package
    • PFM and forced PWM (FPWM) options
    • Available in 1A, LMR38010-Q1
  • Create a custom design using the LMR38020-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • 4.2V to 80V input voltage range
    • 2A continuous output current
    • Ultra-low 40µA operating quiescent current
    • > 1.5mm distance between VIN and GND pin
    • 200kHz to 2.2MHz adjustable switching frequency
    • Frequency synchronization to external clock
    • Spread spectrum for reduced EMI
    • 97% maximum duty cycle
    • Support start-up with prebiased output
    • ±1.0% tolerance voltage reference at room temperature
    • Precision enable
    • Easy to use device with integrated compensation network enabling low BOM count
    • Integrated synchronous rectification
    • 8-pin HSOIC with PowerPAD™ integrated circuit package
    • PFM and forced PWM (FPWM) options
    • Available in 1A, LMR38010-Q1
  • Create a custom design using the LMR38020-Q1 with the WEBENCH Power Designer

The LMR38020-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38020-Q1 operates during input voltage dips as low as 4.2V, at nearly 100% duty cycle if needed, making the device an excellent choice for 48-V battery automotive applications and MHEV/EV systems.

The LMR38020-Q1 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured between 200kHz and 2.2MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller design size at high operating frequency.

The device has built-in protection features such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR38020-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in an 8-pin HSOIC PowerPAD integrated circuit package.

The LMR38020-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38020-Q1 operates during input voltage dips as low as 4.2V, at nearly 100% duty cycle if needed, making the device an excellent choice for 48-V battery automotive applications and MHEV/EV systems.

The LMR38020-Q1 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured between 200kHz and 2.2MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller design size at high operating frequency.

The device has built-in protection features such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR38020-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in an 8-pin HSOIC PowerPAD integrated circuit package.

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관심 가지실만한 유사 제품

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
신규 LMR38025-Q1 활성 확산 스펙트럼을 지원하는 오토모티브 등급 80V 입력 2.5A 동기 스텝다운(벅) DC/DC 컨버터 Same device in smaller WSON package

기술 문서

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모두 보기6
유형 직함 날짜
* Data sheet LMR38020-Q1 4.2V to 80V, 2A , Automotive, Synchronous SIMPLE SWITCHER Power Converter With 40µA IQ datasheet (Rev. B) PDF | HTML 2024/01/23
Application note Reducing Conducted EMI in a Buck Converter for 48 V Automotive Applications PDF | HTML 2023/12/13
Certificate LMR38025QEVM EU Declaration of Conformity (DoC) 2023/11/08
User guide LMR38020QEVM User's Guide PDF | HTML 2021/11/05
Functional safety information LMR380x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA PDF | HTML 2021/11/05
Certificate LMR38020QEVM EU RoHS Declaration of Conformity (DoC) 2021/10/26

설계 및 개발

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

평가 보드

LMR38020QEVM — LMR38020-Q1 평가 모듈 SIMPLE SWITCHER® 전원 컨버터 80V, 2A, 동기 벅, 40-µA IQ

LM38020QEVM 평가 모듈(EVM)은 좁은 공간에서 높은 변환 효율을 달성하기 위해 동기 정류를 사용하는 80V DC/DC 벅 레귤레이터 LMR38020S-Q1을 사용합니다. EVM은 6V~80V의 넓은 입력 전압 범위에서 작동하여 400kHz 스위칭 주파수에서 조정된 5V 출력을 제공합니다. 출력 전압은 세트포인트 정확도가 1.5% 이상이며, 외부 저항 분할기를 사용해 조정 가능합니다. LMR38020QEVM은 LMR38020-Q1 및 LMR38020 벅 변환기에 대해 인증을 받았습니다.
사용 설명서: PDF | HTML
TI.com에서 구매할 수 없습니다
시뮬레이션 모델

LMR38020S-Q1 PSpice Transient Model

SNVMC93.ZIP (261 KB) - PSpice Model
레퍼런스 디자인

TIDA-020061 — 100/1000Base-T1 이더넷 애플리케이션용 차량용 데이터 라인을 통한 PD 전원 레퍼런스 설계

이 레퍼런스 설계는 차량용 애플리케이션에서 PoDL(Power over Data Line)을 시연하는 PD(Power Device)를 구현합니다. 이 설계는 100MBit/s 작동에 대해 DP83TG720S-Q1 1000MBit/s 단일 페어 이더넷(SPE) PHY를 사용하는 옵션으로 DP83TG720S-Q1 SPE PHY를 사용합니다. 커플링 및 디커플링 네트워크는 SPE(Single Pair Ethernet) 케이블의 데이터와 전원을 분할하는 데 사용됩니다.
Design guide: PDF
패키지 다운로드
HSOIC (DDA) 8 옵션 보기

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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