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UCC28740DR +BOM

Constant-Voltage, Constant-Current (CVCC) Flyback controller with Secondary Side Regulation (SSR)

  • Manufacturer:

    TI

  • Mfr.Part #:

    UCC28740DR

  • Datasheet:

    UCC28740DR Datasheet (PDF) pdf-icon

  • Control Mode:

    Secondary-side regulation

  • UVLO Thresholds On/off (V):

    21/7.75

  • Switching Frequency (max) (kHz):

    100

  • Features:

    Current limiting, DCM, High voltage startup, High-voltage startup, Light load efficiency, Light-load efficiency, Overcurrent protection, Overvoltage protection, SSR, Secondary-side regulated, Soft start, Valley switching

  • EDA/CAD Models:

    eda-cad.png Request Free CAD Models for UCC28740DR

UCC28740DR General Description

The UCC28740DR sets itself apart as a versatile and efficient solution for a wide range of power supply applications. Its active clamp-flyback controller, gate driver, and primary side regulation are all seamlessly integrated into a single chip, streamlining the design process and reducing overall costs. With advanced features like digital frequency foldback and line voltage feedforward, this controller offers exceptional performance and efficiency across varying load conditions. Not only does it provide precise control over output voltage and current, but it also includes key protection features to safeguard against potential faults

Key Features

  • 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

Specifications

Control mode Secondary-side regulation UVLO thresholds on/off (V) 21/7.75
Switching frequency (max) (kHz) 100 Features Current limiting, DCM, High voltage startup, High-voltage startup, Light load efficiency, Light-load efficiency, Overcurrent protection, Overvoltage protection, SSR, Secondary-side regulated, Soft start, Valley switching
Operating temperature range (°C) -40 to 125 Rating Catalog
Topology Flyback

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In Stock: 6,305

Minimum Order: 1

Qty. Unit Price Ext. Price
1+ $0.782 $0.78
10+ $0.642 $6.42
30+ $0.574 $17.22
100+ $0.495 $49.50
500+ $0.453 $226.50
1000+ $0.434 $434.00

The prices below are for reference only.