전력 관리 DC/DC 스위칭 레귤레이터 DC/DC 컨트롤러

LV5144

활성

95V 동기식 DC/DC 벅 컨트롤러 

제품 상세 정보

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 95 Vin (min) (V) 6 Vout (max) (V) 60 Vout (min) (V) 0.8 Control mode Voltage mode Features Adjustable current limit, Enable, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Duty cycle (max) (%) 99 Iq (typ) (A) 0.002 Number of phases 1 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 95 Vin (min) (V) 6 Vout (max) (V) 60 Vout (min) (V) 0.8 Control mode Voltage mode Features Adjustable current limit, Enable, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Duty cycle (max) (%) 99 Iq (typ) (A) 0.002 Number of phases 1 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
VQFN (RGY) 20 15.75 mm² (4.5 mm × 3.5 mm)
    • Device temperature grade 1: –40°C to +125°C ambient temperature range
  • Versatile synchronous buck DC/DC controller
    • 6-V to 95-V wide input voltage range
    • 125°C maximum junction temperature
    • 0.8-V reference with ±1% feedback accuracy
    • 0.8-V to 60-V adjustable output voltage
    • 45-ns t ON(min) for high V IN / V OUT ratio
    • 145-ns t OFF(min) for low dropout
    • Lossless R DS(on) or shunt current sensing
    • Optimized for CISPR 11 and CISPR 32 Class B EMI requirements
  • 100-kHz to 1-MHz switching frequency
    • SYNC in and SYNC out capability
    • Selectable diode emulation or FPWM
  • 7.5-V gate drivers for standard V TH 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
    • Device temperature grade 1: –40°C to +125°C ambient temperature range
  • Versatile synchronous buck DC/DC controller
    • 6-V to 95-V wide input voltage range
    • 125°C maximum junction temperature
    • 0.8-V reference with ±1% feedback accuracy
    • 0.8-V to 60-V adjustable output voltage
    • 45-ns t ON(min) for high V IN / V OUT ratio
    • 145-ns t OFF(min) for low dropout
    • Lossless R DS(on) or shunt current sensing
    • Optimized for CISPR 11 and CISPR 32 Class B EMI requirements
  • 100-kHz to 1-MHz switching frequency
    • SYNC in and SYNC out capability
    • Selectable diode emulation or FPWM
  • 7.5-V gate drivers for standard V TH 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

The LV5144 95-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 45 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 design cost. The LV5144 continues to operate during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making an excellent choice for high-performance industrial controls, robotics, datacom, and RF applications.

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 LV5144 95-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 45 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 design cost. The LV5144 continues to operate during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making an excellent choice for high-performance industrial controls, robotics, datacom, and RF applications.

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.

다운로드 스크립트와 함께 비디오 보기 비디오

기술 자료

검색된 결과가 없습니다. 검색어를 지우고 다시 시도하세요.
1개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 LV5144 95-V, Synchronous, BuckDC/DCController With Wide Duty Cycle Range datasheet PDF | HTML 2023. 8. 17

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

LM5146-Q1-EVM12V 고밀도 평가 모듈(EVM)은 넓은 입력 전압 범위를 지닌 LM5146-Q1 고성능 동기 벅 DC-DC 컨트롤러의 성능을 보여주도록 설계되었습니다. 이 설계는 부품 수가 적은 미니어처 풋프린트로 패키징되었습니다. 이는 15V~85V의 넓은 입력 전압 범위에서 작동하여 1% 이상의 설정값 정확도를 지닌 고정 12V 출력 및 최대 8A의 전류를 공급합니다. LM5146-Q1의 최소 온 타임이 40ns이므로 매우 낮은 듀티 사이클로 작동할 수 있습니다. LM5146-Q1은 오류 상태 시 레귤레이터를 보호하기 (...)

사용 설명서: PDF
지원되는 제품 및 하드웨어
재고 있음
제한:
??asset.out-of-stock-ti_ko_KR??
이용할 수 없음
패키지 CAD 기호, 풋프린트 및 3D 모델
VQFN (RGY) 20 Ultra Librarian

주문 및 품질

권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

동영상