홈 전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)
홈
전원 관리
AC/DC 및 DC/DC 컨버터(통합 FET)

TPS628511

활성

SOT583 패키지의 2.7V~6V, 1A 고정 주파수 스텝다운 컨버터

지금 주문
데이터 시트

TPS628511

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 2.7 Vin (max) (V) 6 Switching frequency (min) (kHz) 2025 Switching frequency (max) (kHz) 2475 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 Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 17 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 2.7 Vin (max) (V) 6 Switching frequency (min) (kHz) 2025 Switching frequency (max) (kHz) 2475 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 Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 17 Duty cycle (max) (%) 100
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.
TPS628512 활성 SOT583 패키지의 2.7V~6V, 2A 고정 주파수 스텝다운 컨버터 Pin-to-pin 2-A version.
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TPS628501 활성 SOT-583 패키지의 2.7V--6V 1A 조정 가능한 주파수 스텝다운 컨버터 Device with adjustable switching frequency and compensation of the control loop.

기술 자료

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* 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 TPS628511EVM-139 EU Declaration of Conformity (DoC) 2020/07/27

설계 및 개발

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평가 보드

TPS628511EVM-139 — 2.7V~6V, 1A 스텝다운 컨버터(SOT583 패키지 평가 보드)

The TPS628511EVM-139 evaluation module (EVM) is used to evaluate the TPS62851x device. The TPS62851x device is a high-frequency, synchronous, step-down converter optimized for a small solution size and high efficiency. The devices focus on high-efficiency, step-down conversion over a wide output (...)
사용 설명서: PDF | HTML
TI.com에서 구매 불가
시뮬레이션 모델

TPS628511 PSpice Unencrypted Transient Model (Rev. A)

SLUM809A.ZIP (172 KB) - PSpice Model
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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:
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  • 조립 위치

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