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

UCC28740-Q1

AKTIV

Flyback-Controller für die Automobilindustrie, extrem geringer Standby, mit integriertem HV-Anlauf u

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Datenblatt

UCC28740-Q1

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Operating temperature range (°C) -40 to 125 Control mode Secondary-side regulation Topology Flyback Rating Automotive Features Automotive qualified, Current limiting, DCM, Error amplifier, Green mode, High voltage startup, High-voltage startup, Input line monitor, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Quasi-Resonant, SSR, Secondary-side regulated, Soft start, Valley switching TI functional safety category Functional Safety-Capable
Operating temperature range (°C) -40 to 125 Control mode Secondary-side regulation Topology Flyback Rating Automotive Features Automotive qualified, Current limiting, DCM, Error amplifier, Green mode, High voltage startup, High-voltage startup, Input line monitor, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Quasi-Resonant, SSR, Secondary-side regulated, Soft start, Valley switching TI functional safety category Functional Safety-Capable
SOIC (D) 7 29.4 mm² 4.9 x 6
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: -40.C to +125.C
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C4B: ±750 V
  • Funcitonal Safety-Capable
  • Less than 10-mW no-load power capability
  • 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 over current protection functions
  • Create a custom design using the UCC28740-Q1 with the WEBENCH Power Designer
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: -40.C to +125.C
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C4B: ±750 V
  • Funcitonal Safety-Capable
  • Less than 10-mW no-load power capability
  • 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 over current protection functions
  • Create a custom design using the UCC28740-Q1 with the WEBENCH Power Designer

The UCC28740-Q1 isolated-flyback power-supply controller regulates the output using an optical coupler to provide fast transient response to large-load steps.

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-Q1 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-Q1 isolated-flyback power-supply controller regulates the output using an optical coupler to provide fast transient response to large-load steps.

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-Q1 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.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet UCC28740-Q1 Ultra Low Standby, Flyback Controller for Automotive, with Integrated HV Startup and Optocoupler Feedback datasheet (Rev. C) PDF | HTML 08 Dez 2020
White paper Isolated Bias Power Supply Architecture for HEV and EV Traction Inverters PDF | HTML 11 Okt 2023
Application brief Designing a Robust Traction Inverter Redundant Power Supply From 800 V Battery (Rev. C) PDF | HTML 16 Feb 2023
Functional safety information UCC28740-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 11 Nov 2020
Application note Minimize Standby Consumption for UCC287XX Family 01 Aug 2019
Analog Design Journal Agency requirements for stand-by power consumption w/ offline and PoL converters 26 Jan 2016

Design und Entwicklung

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

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
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Berechnungstool

SLUC487 — UCC28740 Design Calculator

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Unterstützte Produkte und Hardware

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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
Referenzdesigns

PMP41009 — Referenzdesign einer isolierten Flyback-Stromversorgung mit 350 bis 1000 V Eingangsspannung, 56 W

Dieses Referenzdesign bietet isolierte 14-V- und 56-W-Ausgänge mit einer quasi-resonanten Flyback-Topologie. Die Stromversorgung kann über den 350-V- bis 1000-V-DC-Eingang erfolgen. Dieses Design verwendet Kaskoden-MOSFETs und den Flyback-Controller UCC28740-Q1. Die Leitungs- und Lastregelung wird (...)
Test report: PDF
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:
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  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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