Startseite Energiemanagement AC/DC- und DC/DC-Controller (externer FET)
Startseite
Energiemanagement
AC/DC- und DC/DC-Controller (externer FET)

UCC28740

AKTIV

Konstantspannungs-, Konstantstrom (CVCC)-Flyback-Regler mit sekundärseitiger Regelung (SSR)

Jetzt bestellen
Datenblatt

UCC28740

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Rating Catalog Topology Flyback Control mode Secondary-side regulation Features Current limiting, DCM, High-voltage startup, Light load efficiency, Overcurrent protection, Overvoltage protection, Quasi-Resonant, Secondary-side regulated, Soft start, USB C/PD compatible, Valley switching Operating temperature range (°C) -40 to 125
Rating Catalog Topology Flyback Control mode Secondary-side regulation Features Current limiting, DCM, High-voltage startup, Light load efficiency, Overcurrent protection, Overvoltage protection, Quasi-Resonant, Secondary-side regulated, Soft start, USB C/PD compatible, Valley switching Operating temperature range (°C) -40 to 125
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 Andere AC/DC- und DC/DC-Controller (externer FET) suchen
Herunterladen Video mit Transkript ansehen Video

Ähnliche Produkte, die für Sie interessant sein könnten

open-in-new Alternativen vergleichen
Drop-In-Ersatz mit gegenüber dem verglichenen Baustein verbesserter Funktionalität
UCC28740-Q1 AKTIV Flyback-Controller für die Automobilindustrie, extrem geringer Standby, mit integriertem HV-Anlauf u Automotive qualified version
Ähnliche Funktionalität wie verglichener Baustein
UCC28730 AKTIV Null Stand-by-Stromverbrauch-PSR-Flyback-Controller mit CVCC und Aufweck-Überwachung Offers lower standby power

Technische Dokumentation

star =Von TI ausgewählte Top-Empfehlungen für dieses Produkt
Keine Ergebnisse gefunden. Bitte geben Sie einen anderen Begriff ein und versuchen Sie es erneut.
Alle anzeigen 16
Typ Titel Datum
* Data sheet UCC28740 Constant-Voltage Constant-Current Flyback Controller Using Optocoupled Feedback datasheet (Rev. D) PDF | HTML 23 Mär 2018
Technical article How to design a limited power source industrial AC/DC power supply with minimal components – part 1 PDF | HTML 11 Jan 2024
Application brief Flyback Selection Guide PDF | HTML 23 Jun 2022
Product overview CCS-Compliant EV Service Equipment Reference Design for Level 1 and 2 EV Charger 16 Jun 2022
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 31 Aug 2021
Application note Practical Feedback Loop Design Considerations for Flyback Converter Using PDF | HTML 20 Mai 2020
Application note Minimize Standby Consumption for UCC287XX Family 01 Aug 2019
Technical article Choosing the right flyback controller for your design PDF | HTML 24 Aug 2018
Application note Selecting Electrolitic Bus Capacitor for Universal Input 17 Jul 2018
Technical article How to minimize time to market in your USB Type-C™ and USB Power Delivery designs PDF | HTML 26 Mär 2018
Technical article Brush up on the latest motor design considerations for appliances PDF | HTML 26 Okt 2017
Technical article Powering the IoT PDF | HTML 26 Jan 2017
Technical article How to design a limited power source industrial AC/DC power supply - part 2 PDF | HTML 26 Okt 2016
Analog Design Journal Agency requirements for stand-by power consumption w/ offline and PoL converters 26 Jan 2016
White paper Control Challenges for Low Power AC/DC Converters 02 Okt 2015
White paper Control Challenges for Low Power AC/DC Converters (PPT) 02 Okt 2015

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

UCC24630EVM-636 — UCC24630 65 W, AC/DC-Adapter

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.

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

UCC28740EVM-525 — UCC28740EVM-525-Evaluierungsmodul

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 (...)

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Simulationsmodell

UCC28740 SIMPLIS Transient Model (Rev. A)

SLUM672A.ZIP (122 KB) - SIMPLIS Model
Herunterladen
Berechnungstool

SLUC487 — UCC28740 Design Calculator

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC- und DC/DC-Controller (externer FET)
UCC28740 — Konstantspannungs-, Konstantstrom (CVCC)-Flyback-Regler mit sekundärseitiger Regelung (SSR) UCC28740-Q1 — Flyback-Controller für die Automobilindustrie, extrem geringer Standby, mit integriertem HV-Anlauf u
Herunterladen

Viele TI-Referenzdesigns beinhalten UCC28740

Mit unserem Referenzdesign-Auswahltool können Sie die für Ihre Anwendung und Ihre Parameter am besten geeigneten Designs durchsehen und ermitteln.

Referenzdesigns anzeigen
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SOIC (D) 7 Ultra Librarian
Es gelten die allgemeinen Geschäftsbedingungen von TI für Evaluierungsartikel.

Bestellen & Qualität

Beinhaltete Information:
  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

Empfohlene Produkte können Parameter, Evaluierungsmodule oder Referenzdesigns zu diesem TI-Produkt beinhalten.

Support und Schulungen

TI E2E™-Foren mit technischem Support von TI-Ingenieuren

Alle Forenthemen auf Englisch anzeigen

Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.

Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support. ​​​​​​​​​​​​​​

Videos