전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

TPS628512

활성

SOT583 패키지의 2.7V~6V, 2A 고정 주파수 스텝다운 컨버터

제품 상세 정보

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 6 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Adjustable soft start, Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Soft-start adjustable, Synchronous Rectification, Tracking, UVLO adjustable EMI features Spread Spectrum TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Switching frequency (min) (kHz) 2025 Switching frequency (max) (kHz) 2475 Iq (typ) (µA) 17 Control mode current mode Duty cycle (max) (%) 100 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 6 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Adjustable soft start, Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Soft-start adjustable, Synchronous Rectification, Tracking, UVLO adjustable EMI features Spread Spectrum TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Switching frequency (min) (kHz) 2025 Switching frequency (max) (kHz) 2475 Iq (typ) (µA) 17 Control mode current mode Duty cycle (max) (%) 100 Type Converter
SOT-5X3 (DRL) 8 3.36 mm² 2.1 x 1.6
  • Functional Safety-Capable
  • Input voltage range: 2.7 V to 6 V
  • Output voltage from 0.6 V to 5.5 V
  • 1% feedback voltage accuracy (full temperature range)
  • TJ = –40°C to +150°C
  • Family of 0.5-A, 1-A, 2-A (continuous), and 3-A (peak) devices
  • Switching frequency in PWM: 2.25 MHz
  • External synchronization from 1.8 MHz to 4 MHz
  • Forced PWM or PWM/PFM operation
  • Quiescent current: 17 µA (typical)
  • Adjustable soft start-up to 10 ms
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Power-good output with window comparator
  • For device options with selectable compensation, see the TPS628501
  • Functional Safety-Capable
  • Input voltage range: 2.7 V to 6 V
  • Output voltage from 0.6 V to 5.5 V
  • 1% feedback voltage accuracy (full temperature range)
  • TJ = –40°C to +150°C
  • Family of 0.5-A, 1-A, 2-A (continuous), and 3-A (peak) devices
  • Switching frequency in PWM: 2.25 MHz
  • External synchronization from 1.8 MHz to 4 MHz
  • Forced PWM or PWM/PFM operation
  • Quiescent current: 17 µA (typical)
  • Adjustable soft start-up to 10 ms
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Power-good output with window comparator
  • For device options with selectable compensation, see the TPS628501

The TPS62851x is a family of pin-to-pin 0.5-A, 1-A, 2-A (continuous), and 3-A (peak) high efficiency, easy-to-use, synchronous step-down DC/DC converters. They are based on a peak current mode control topology. Low resistive switches allow up to 2-A continuous output current and 3-A peak current. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PWM/PFM mode, the TPS62851x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPS62851x provide a 1% output voltage accuracy in PWM mode, which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or tracking the output voltage to an external source, which allows external sequencing of different supply rails and limits the inrush current during start-up.

The TPS62851x is available in an 8-pin 1.60-mm × 2.10-mm SOT583 package, offering a high power density solution.

The TPS62851x is a family of pin-to-pin 0.5-A, 1-A, 2-A (continuous), and 3-A (peak) high efficiency, easy-to-use, synchronous step-down DC/DC converters. They are based on a peak current mode control topology. Low resistive switches allow up to 2-A continuous output current and 3-A peak current. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PWM/PFM mode, the TPS62851x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPS62851x provide a 1% output voltage accuracy in PWM mode, which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or tracking the output voltage to an external source, which allows external sequencing of different supply rails and limits the inrush current during start-up.

The TPS62851x is available in an 8-pin 1.60-mm × 2.10-mm SOT583 package, offering a high power density solution.

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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
TPS628510 활성 SOT583 패키지의 2.7V~6V, 0.5A 고정 주파수 스텝다운 컨버터 Pin-to-pin 0.5-A version.
TPS628511 활성 SOT583 패키지의 2.7V~6V, 1A 고정 주파수 스텝다운 컨버터 Pin-to-pin 1-A version.
TPS628513 활성 SOT-583 패키지의 2.7V~6V, 3A 고정 주파수 스텝다운 컨버터 Higher output current.
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TPS628502 활성 SOT583 패키지의 2.7V~6V, 2A 조정 가능 주파수 스텝다운 컨버터 Device with adjustable switching frequency and compensation of the control loop.

기술 자료

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유형 직함 날짜
* Data sheet TPS62851x 2.7-V to 6-V, 0.5-A, 1-A, 2-A, and 3-A Step-Down Converters in a SOT583 Package datasheet (Rev. B) PDF | HTML 2022/06/09
Application note How to Measure Impedance of a Power Distribution Network of a DC-DC Converter PDF | HTML 2022/01/20
Application note Loop Gain Reconstruction of a Step-Down Converter from Output Impedance PDF | HTML 2022/01/20
User guide TPS62851xEVM-139 Evaluation Module (Rev. A) PDF | HTML 2021/06/24
Application note Improving Efficiency at Higher Loads with High Switching Frequencies PDF | HTML 2021/06/16
Functional safety information TPS62851x Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2021/03/24
Certificate TPS628512EVM-139 EU Declaration of Conformity (DoC) 2020/07/27

설계 및 개발

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

평가 보드

TPS628512EVM-139 — 2.7V~6V, 2A 스텝다운 컨버터(SOT583 패키지 평가 보드)

TPS628512EVM-139 평가 모듈(EVM)은 TPS62851x 장치를 평가하는 데 사용됩니다. TPS62851x 장치는 작은 솔루션 크기와 높은 효율성에 최적화된 고주파 동기 스텝다운 컨버터입니다. 이 장치는 넓은 출력 전류 범위에 걸쳐 고효율의 스텝다운 변환에 중점을 둡니다. 이 컨버터는 중부하부터 고부하까지는 PWM 모드에서 작동하고, 경부하에서는 자동으로 절전 모드에 진입해 전체 부하 전류 범위에서 높은 효율을 유지합니다.  이 장치는 SOT583 패키지의 핀을 포함하여 2.1mm × 1.6mm로 제공됩니다.
사용 설명서: PDF | HTML
TI.com에서 구매 불가
시뮬레이션 모델

TPS628512 PSpice Unencrypted Transient Model Package (Rev. A)

SLUM806A.ZIP (132 KB) - PSpice Model
패키지 CAD 기호, 풋프린트 및 3D 모델
SOT-5X3 (DRL) 8 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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