홈 전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)
홈
전원 관리
AC/DC 및 DC/DC 컨트롤러(외장 FET)

UCC28740

활성

2차 측면 조절(SSR)을 지원하는 정전압, 정전류(CVCC) 플라이백 컨트롤러

지금 주문
데이터 시트

UCC28740

활성
데이터 시트 지금 주문

제품 상세 정보

Operating temperature range (°C) -40 to 125 Control mode Secondary-side regulation Topology Flyback Rating Catalog Features Current limiting, DCM, HV Start-up, High voltage startup, High-voltage startup, Light load efficiency, Light-load efficiency, OVP, Overcurrent protection, Overvoltage protection, Quasi-Resonant, SSR, Secondary-side regulated, Soft start, USB C/PD compatible, Valley switching, current limiting
Operating temperature range (°C) -40 to 125 Control mode Secondary-side regulation Topology Flyback Rating Catalog Features Current limiting, DCM, HV Start-up, High voltage startup, High-voltage startup, Light load efficiency, Light-load efficiency, OVP, Overcurrent protection, Overvoltage protection, Quasi-Resonant, SSR, Secondary-side regulated, Soft start, USB C/PD compatible, Valley switching, current limiting
SOIC (D) 7 29.4 mm² 4.9 x 6
  • Less than 10-mW No-Load Power Capability
  • Optocoupled Feedback for CV, and
    Primary-Side Regulation (PSR) for CC
  • Enables ±1% Voltage Regulation and ±5% Current Regulation Across Line and Load
  • 700-V Startup Switch
  • 100-kHz Maximum Switching Frequency Enables High-Power-Density Charger Designs
  • Resonant-Ring Valley-Switching Operation for Highest Overall Efficiency
  • Frequency Dithering to Ease EMI Compliance
  • Clamped Gate-Drive Output for MOSFET
  • Overvoltage, Low-Line, and Overcurrent Protection Functions
  • SOIC-7 Package
  • Create a Custom Design Using the UCC28740 With the WEBENCH® Power Designer
  • Less than 10-mW No-Load Power Capability
  • Optocoupled Feedback for CV, and
    Primary-Side Regulation (PSR) for CC
  • Enables ±1% Voltage Regulation and ±5% Current Regulation Across Line and Load
  • 700-V Startup Switch
  • 100-kHz Maximum Switching Frequency Enables High-Power-Density Charger Designs
  • Resonant-Ring Valley-Switching Operation for Highest Overall Efficiency
  • Frequency Dithering to Ease EMI Compliance
  • Clamped Gate-Drive Output for MOSFET
  • Overvoltage, Low-Line, and Overcurrent Protection Functions
  • SOIC-7 Package
  • Create a Custom Design Using the UCC28740 With the WEBENCH® Power Designer

The UCC28740 isolated-flyback power-supply controller provides Constant-Voltage (CV) using an optical coupler to improve transient response to large-load steps. Constant-Current (CC) regulation is accomplished through Primary-Side Regulation (PSR) techniques. This device processes information from opto-coupled feedback and an auxiliary flyback winding for precise high-performance control of output voltage and current.

An internal 700-V startup switch, dynamically controlled operating states, and a tailored modulation profile support ultra-low standby power without sacrificing startup time or output transient response.

Control algorithms in the UCC28740 allow operating efficiencies to meet or exceed applicable standards. The drive output interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley-switching reduces switching losses. Modulation of switching frequency and primary current-peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controller has a maximum switching frequency of 100 kHz and always maintains control of the peak-primary current in the transformer. Protection features keep primary and secondary component stresses in check. A minimum switching frequency of 170 Hz facilitates the achievement of less than 10-mW no-load power.

The UCC28740 isolated-flyback power-supply controller provides Constant-Voltage (CV) using an optical coupler to improve transient response to large-load steps. Constant-Current (CC) regulation is accomplished through Primary-Side Regulation (PSR) techniques. This device processes information from opto-coupled feedback and an auxiliary flyback winding for precise high-performance control of output voltage and current.

An internal 700-V startup switch, dynamically controlled operating states, and a tailored modulation profile support ultra-low standby power without sacrificing startup time or output transient response.

Control algorithms in the UCC28740 allow operating efficiencies to meet or exceed applicable standards. The drive output interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley-switching reduces switching losses. Modulation of switching frequency and primary current-peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controller has a maximum switching frequency of 100 kHz and always maintains control of the peak-primary current in the transformer. Protection features keep primary and secondary component stresses in check. A minimum switching frequency of 170 Hz facilitates the achievement of less than 10-mW no-load power.
filter 기타 AC/DC 및 DC/DC 컨트롤러(외장 FET) 찾기
다운로드 스크립트와 함께 비디오 보기 동영상

관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치보다 업그레이드된 기능을 지원하는 드롭인 대체품
UCC28740-Q1 활성 HV 시동 및 옵토커플러 피드백이 통합된 오토모티브 초저 대기, 플라이백 컨트롤러 Automotive qualified version
비교 대상 장치와 유사한 기능
UCC28730 활성 CVCC 및 활성화 모니터링을 지원하는 제로 대기 PSR 플라이백 컨트롤러 Offers lower standby power

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
17개 모두 보기
유형 직함 날짜
* Data sheet UCC28740 Constant-Voltage Constant-Current Flyback Controller Using Optocoupled Feedback datasheet (Rev. D) PDF | HTML 2018/03/23
Technical article How to design a limited power source industrial AC/DC power supply with minimal components – part 1 PDF | HTML 2024/01/11
Application brief Flyback Selection Guide PDF | HTML 2022/06/23
Product overview CCS-Compliant EV Service Equipment Reference Design for Level 1 and 2 EV Charger 2022/06/16
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 2021/08/31
Application note Practical Feedback Loop Design Considerations for Flyback Converter Using PDF | HTML 2020/05/20
Application note Minimize Standby Consumption for UCC287XX Family 2019/08/01
Technical article Choosing the right flyback controller for your design PDF | HTML 2018/08/24
Application note Selecting Electrolitic Bus Capacitor for Universal Input 2018/07/17
Technical article How to minimize time to market in your USB Type-C™ and USB Power Delivery designs PDF | HTML 2018/03/26
Technical article Brush up on the latest motor design considerations for appliances PDF | HTML 2017/10/26
Technical article Powering the IoT PDF | HTML 2017/01/26
Technical article How to design a limited power source industrial AC/DC power supply - part 2 PDF | HTML 2016/10/26
Analog Design Journal Agency requirements for stand-by power consumption w/ offline and PoL converters 2016/01/26
White paper Control Challenges for Low Power AC/DC Converters 2015/10/02
White paper Control Challenges for Low Power AC/DC Converters (PPT) 2015/10/02
EVM User's guide Using the UCC28740EVM-525 2013/07/02

설계 및 개발

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

평가 보드

UCC24630EVM-636 — UCC24630 65W AC/DC 어댑터

This is a high efficiency 65W AC/DC design using UCC24630 Synchronous Rectification Controller for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI performance requirements for external power supplies.

사용 설명서: PDF
TI.com에서 구매 불가
평가 보드

UCC28740EVM-525 — UCC28740EVM-525 평가 모듈

The UCC28740EVM-525 evaluation module is a 10W off-line discontinuous mode (DCM) flyback converter that provides constant-voltage (CV) and constant-current (CC) output regulation. It uses optical coupler feedback for tight voltage regulation and improved the transient response to large load steps (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

UCC28740 SIMPLIS Transient Model (Rev. A)

SLUM672A.ZIP (122 KB) - SIMPLIS Model
다운로드
계산 툴

SLUC487 — UCC28740 Design Calculator

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
AC/DC 및 DC/DC 컨트롤러(외장 FET)
UCC28740 — 2차 측면 조절(SSR)을 지원하는 정전압, 정전류(CVCC) 플라이백 컨트롤러 UCC28740-Q1 — HV 시동 및 옵토커플러 피드백이 통합된 오토모티브 초저 대기, 플라이백 컨트롤러
다운로드

많은 TI 레퍼런스 설계에는 UCC28740이(가) 포함됩니다.

레퍼런스 디자인 선택 툴을 사용하여 애플리케이션 및 매개 변수에 가장 적합한 설계를 검토하고 식별할 수 있습니다.

레퍼런스 설계 보기
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
SOIC (D) 7 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

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

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

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