전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)

TPS51225

활성

5V 및 3.3V LDO를 지원하는 5.5V~24V, 듀얼 동기형 벅 컨트롤러

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
비교 대상 장치와 유사한 기능
TPS51397A 활성 4.5V~24V 입력, 10A 동기식 강압 조절기 Faster switching frequency and extended positive operating temperature range.

제품 상세 정보

Vin (min) (V) 5.5 Vin (max) (V) 24 Iout (max) (A) 10 Operating temperature range (°C) -40 to 85 Control mode D-CAP Topology Buck Rating Catalog Vout (min) (V) 4.5 Vout (max) (V) 5.5 Features Enable, Light Load Efficiency, Power good, Synchronous Rectification Iq (typ) (µA) 900 Duty cycle (max) (%) 90 Number of phases 1
Vin (min) (V) 5.5 Vin (max) (V) 24 Iout (max) (A) 10 Operating temperature range (°C) -40 to 85 Control mode D-CAP Topology Buck Rating Catalog Vout (min) (V) 4.5 Vout (max) (V) 5.5 Features Enable, Light Load Efficiency, Power good, Synchronous Rectification Iq (typ) (µA) 900 Duty cycle (max) (%) 90 Number of phases 1
WQFN (RUK) 20 9 mm² 3 x 3
  • Input Voltage Range: 5.5 V to 24 V
  • Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%)
  • Built-in, 100-mA, 5-V and 3.3-V LDOs
  • Clock Output for Charge-Pump
  • ±1% Reference Accuracy
  • Adaptive On-time D-CAP Mode Control Architecture with 300kHz/355kHz Frequency Setting
  • Auto-skip Light Load Operation (TPS51225/C)
  • OOA Light Load Operation (TPS51225B)
  • Internal 0.8-ms Voltage Servo Soft-Start
  • Low-Side RDS(on) Current Sensing Scheme with 4500 ppm/°C Temperature Coefficient
  • Built-in Output Discharge Function
  • Separate Enable Input for Switchers (TPS51225/B/C)
  • Dedicated OC Setting Terminals
  • Power Good Indicator
  • OVP/UVP/OCP Protection
  • Non-latch UVLO/OTP Protection
  • 20-Pin, 3 mm × 3 mm, QFN (RUK)
  • Input Voltage Range: 5.5 V to 24 V
  • Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%)
  • Built-in, 100-mA, 5-V and 3.3-V LDOs
  • Clock Output for Charge-Pump
  • ±1% Reference Accuracy
  • Adaptive On-time D-CAP Mode Control Architecture with 300kHz/355kHz Frequency Setting
  • Auto-skip Light Load Operation (TPS51225/C)
  • OOA Light Load Operation (TPS51225B)
  • Internal 0.8-ms Voltage Servo Soft-Start
  • Low-Side RDS(on) Current Sensing Scheme with 4500 ppm/°C Temperature Coefficient
  • Built-in Output Discharge Function
  • Separate Enable Input for Switchers (TPS51225/B/C)
  • Dedicated OC Setting Terminals
  • Power Good Indicator
  • OVP/UVP/OCP Protection
  • Non-latch UVLO/OTP Protection
  • 20-Pin, 3 mm × 3 mm, QFN (RUK)

The TPS51225/B/C is a cost-effective, dual-synchronous buck controller targeted for notebook system-power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 260-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter efficiency. The TPS51225/B/C supports high efficiency, fast transient response and provides a combined power-good signal. Adaptive on-time, D-CAP™ control provides convenient and efficient operation. The device operates with supply input voltage ranging from 5.5 V to 24 V and supports output voltages of 5.0 V and 3.3 V. The TPS51225/B/C is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified from –40°C to 85°C.

The TPS51225/B/C is a cost-effective, dual-synchronous buck controller targeted for notebook system-power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 260-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter efficiency. The TPS51225/B/C supports high efficiency, fast transient response and provides a combined power-good signal. Adaptive on-time, D-CAP™ control provides convenient and efficient operation. The device operates with supply input voltage ranging from 5.5 V to 24 V and supports output voltages of 5.0 V and 3.3 V. The TPS51225/B/C is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified from –40°C to 85°C.

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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
5개 모두 보기
유형 직함 날짜
* Data sheet Dual Synchronous Step-Down Controller with 5-V and 3.3-V LDOs datasheet (Rev. B) 2012/09/09
User guide TPS51225 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 2022/02/11
Application note Mosfet Driver Circuit Design Guide for TPS512xx (Rev. A) 2019/04/01
Application note Understanding Dead-time Based On TPS51225/275/285 2018/08/22
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25

설계 및 개발

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

평가 보드

TPS51225EVM-133 — TPS51225 평가 모듈

The Texas Instruments TPS51225EVM-133 evaluation module (EVM) helps designers evaluate the performance of the TPS51225 Dual Synchronous Step-Down Controller. The EVM provides 5V and 3.3V outputs and LDOs for a notebook system power supply application. The EVM also provides a 260kHz VCLK output, (...)
사용 설명서: PDF | HTML
TI.com에서 구매 불가
시뮬레이션 모델

TPS51225 TINA-TI Transient Reference Design

SLUM351.TSC (304 KB) - TINA-TI Reference Design
시뮬레이션 모델

TPS51225 TINA-TI Transient Spice Model

SLUM350.ZIP (79 KB) - TINA-TI Spice Model
시뮬레이션 모델

TPS51225 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM258A.ZIP (56 KB) - PSpice Model
시뮬레이션 모델

TPS51225A PSpice Transient Model

SLUM271.ZIP (83 KB) - PSpice Model
시뮬레이션 모델

TPS51225B TINA-TI Transient Reference Design

SLUM353.TSC (837 KB) - TINA-TI Reference Design
시뮬레이션 모델

TPS51225B TINA-TI Transient Spice Model

SLUM354.ZIP (87 KB) - TINA-TI Spice Model
시뮬레이션 모델

TPS51225B Unencrypted PSpice Transient Model Package (Rev. A)

SLUM273A.ZIP (110 KB) - PSpice Model
시뮬레이션 모델

TPS51225C Unencrypted PSpice Transient Model Package (Rev. A)

SLUM272A.ZIP (56 KB) - PSpice Model
패키지 CAD 기호, 풋프린트 및 3D 모델
WQFN (RUK) 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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