홈 전력 관리 AC/DC 및 DC/DC 컨버터(통합 FET)
홈
전력 관리
AC/DC 및 DC/DC 컨버터(통합 FET)
신규

TPS543321

활성

3.8V~18V 입력, 3A, 200kHz~2.2MHz 동기 벅 컨버터

지금 주문
데이터 시트

TPS543321

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 18 Vin (min) (V) 3.8 Vout (max) (V) 17.64 Vout (min) (V) 0.6 Features Adjustable soft start, Adjustable switching frequency, Enable, External Sync, Light Load Efficiency, Low Quiescent Current, Phase Interleaving, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 28 Duty cycle (max) (%) 98 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 18 Vin (min) (V) 3.8 Vout (max) (V) 17.64 Vout (min) (V) 0.6 Features Adjustable soft start, Adjustable switching frequency, Enable, External Sync, Light Load Efficiency, Low Quiescent Current, Phase Interleaving, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 28 Duty cycle (max) (%) 98 Type Converter
VQFN-HR (RQF) 9 3 mm² 2 x 1.5
  • Configured for a wide range of applications
    • 3.8V to 18V input voltage range
    • Up to 5A (TPS543521), 4A (TPS543421), 3A (TPS543321) continuous output current
    • 0.6V ±1% reference voltage (–40°C to 150°C)
    • 70ns and 114ns minimum switching on and off-time
    • 8us maximum switching on-time
    • 98% maximum duty cycle
  • High efficiency
    • Integrated 47mΩ and 21mΩ MOSFETs
    • Low quiescent current of 28uA (typical)
  • Ease of use and small design size
    • Peak current control mode with internal compensation
    • 200kHz to 2.2MHz selectable frequency
    • Synchronizable to an external clock (support phase shift): 200kHz to 2.2MHz
    • Selectable PFM / FCCM at light load condition
    • Selectable adjustable soft-start time, power-good indicator function
    • Good EMI performance with frequency spread spectrum and optimized pinout
    • Hiccup overcurrent (OC) limit for both high-side and low-side MOSFETs
    • Non-latched protections for over temperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), undervoltage protection (UVP), and undervoltage lockout (UVLO)
    • Integrated bootstrap capacitor to support single-layer PCB layout
    • –40°C to 150°C operating junction temperature
    • 1.5mm × 2.0mm QFN package
  • Create a custom design with the TPS543x21 using the WEBENCH Power Designer
  • Configured for a wide range of applications
    • 3.8V to 18V input voltage range
    • Up to 5A (TPS543521), 4A (TPS543421), 3A (TPS543321) continuous output current
    • 0.6V ±1% reference voltage (–40°C to 150°C)
    • 70ns and 114ns minimum switching on and off-time
    • 8us maximum switching on-time
    • 98% maximum duty cycle
  • High efficiency
    • Integrated 47mΩ and 21mΩ MOSFETs
    • Low quiescent current of 28uA (typical)
  • Ease of use and small design size
    • Peak current control mode with internal compensation
    • 200kHz to 2.2MHz selectable frequency
    • Synchronizable to an external clock (support phase shift): 200kHz to 2.2MHz
    • Selectable PFM / FCCM at light load condition
    • Selectable adjustable soft-start time, power-good indicator function
    • Good EMI performance with frequency spread spectrum and optimized pinout
    • Hiccup overcurrent (OC) limit for both high-side and low-side MOSFETs
    • Non-latched protections for over temperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), undervoltage protection (UVP), and undervoltage lockout (UVLO)
    • Integrated bootstrap capacitor to support single-layer PCB layout
    • –40°C to 150°C operating junction temperature
    • 1.5mm × 2.0mm QFN package
  • Create a custom design with the TPS543x21 using the WEBENCH Power Designer

The TPS543x21 is a high-efficiency, high-voltage input, and easy-to-use, synchronous buck converter with high design flexibility. With the wide operating input voltage range of 3.8V to 18V, the TPS543x21 is designed for systems powered from 5V, 12V power-bus rails. The device supports up to 5A, 4A, 3A continuous output current and 98% maximum duty cycle.

TPS543x21 uses fixed frequency peak current control with internal compensation for fast transient response and good line and load regulation. With the optimized internal loop compensation, the device eliminates the need for external compensation over a wide output voltage range and switching frequency. Integrated bootstrap capacitor helps achieve single layer PCB and reduce external component count.

TPS543x21 allows high design flexibility with wide supported switching frequency of 200kHz – 2.2MHz set by the RT/SYNC pin. The device has the option for pulse frequency modulation (PFM), forced continuous conduction modulation (FCCM) at light load condition and adjustable soft-start (SS) time / power-good (PG) indicator with different configuration of the MODE pin.

TPS543x21 provides protection functions including thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. TPS543x21 is available in 9-pin, 1.5mm × 2.0mm QFN package, and the pinout is available for single-layer PCB layout and the junction temperature is specified from –40°C to 150°C.

The TPS543x21 is a high-efficiency, high-voltage input, and easy-to-use, synchronous buck converter with high design flexibility. With the wide operating input voltage range of 3.8V to 18V, the TPS543x21 is designed for systems powered from 5V, 12V power-bus rails. The device supports up to 5A, 4A, 3A continuous output current and 98% maximum duty cycle.

TPS543x21 uses fixed frequency peak current control with internal compensation for fast transient response and good line and load regulation. With the optimized internal loop compensation, the device eliminates the need for external compensation over a wide output voltage range and switching frequency. Integrated bootstrap capacitor helps achieve single layer PCB and reduce external component count.

TPS543x21 allows high design flexibility with wide supported switching frequency of 200kHz – 2.2MHz set by the RT/SYNC pin. The device has the option for pulse frequency modulation (PFM), forced continuous conduction modulation (FCCM) at light load condition and adjustable soft-start (SS) time / power-good (PG) indicator with different configuration of the MODE pin.

TPS543x21 provides protection functions including thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. TPS543x21 is available in 9-pin, 1.5mm × 2.0mm QFN package, and the pinout is available for single-layer PCB layout and the junction temperature is specified from –40°C to 150°C.
filter 기타 AC/DC 및 DC/DC 컨버터(통합 FET) 찾기
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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치보다 업그레이드된 기능을 지원하는 드롭인 대체품
신규 TPS54338 활성 3.8V~28V 입력, 3A, 200kHz~2.2MHz 동기 벅 컨버터 Optimized for 28-VIN in same form factor.
신규 TPS543421 활성 3.8V~18V 입력, 4A, 200kHz~2.2MHz 동기 벅 컨버터 Optimized for higher IOUT in same form factor.
신규 TPS543521 활성 3.8V~18V 입력, 5A, 200kHz~2.2MHz 동기 벅 컨버터 Optimized for higher IOUT in same form factor.
비교 대상 장치와 유사한 기능
신규 TPSM843321 활성 3.8V~18V 입력, 3A, 200kHz~2.2MHz 동기 스텝다운 전원 모듈 Module version featuring an integrated inductor.

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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1개 모두 보기
유형 직함 날짜
* Data sheet TPS543x21 3.8V to 18V, 5A, 4A, 3A, Synchronous Buck Converters With User Selectable Mode datasheet PDF | HTML 2025/03/18

설계 및 개발

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

평가 보드

TPS543521EVM — TPS543521 평가 모듈

TPS543521EVM은 TPS543521 스텝다운 컨버터를 평가할 수 있도록 완조립 및 테스트를 거친 회로입니다. 평가 모듈은 3.8V~18V의 입력 전압 범위에서 작동하도록 구성되어 있으며, 최대 5A의 부하 전류로 조정된 5.0V 출력을 제공합니다. 대부분의 장치 설정은 점퍼를 통해 쉽게 조정하거나 설정할 수 있으며, 예를 들어 작동 모드, 소프트 스타트 시간 및 스위칭 주파수 등이 포함됩니다.
사용 설명서: PDF | HTML
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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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