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

UCC28711

AKTIV

Konstantspannungs-, Konstantstrom-PWM mit PSR, Valley-Switching, NTC-Option und 0-mV-Kabel-Komp.

Produktdetails

Vin (min) (V) 21 Vin (max) (V) 450 Iout (max) (A) 3 Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 24 Features CC/CV output regulation, DCM, Green mode, High voltage startup, High-voltage startup, Input line monitor, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, PSR, Primary-side regulated, Quasi-Resonant, Soft start, Valley switching Iq (typ) (µA) 2000 Duty cycle (max) (%) 99
Vin (min) (V) 21 Vin (max) (V) 450 Iout (max) (A) 3 Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 24 Features CC/CV output regulation, DCM, Green mode, High voltage startup, High-voltage startup, Input line monitor, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, PSR, Primary-side regulated, Quasi-Resonant, Soft start, Valley switching Iq (typ) (µA) 2000 Duty cycle (max) (%) 99
SOIC (D) 7 29.4 mm² 4.9 x 6
  • < 10-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-Coupler
  • ±5% Voltage and Current Regulation Across Line and Load
  • 700-V Start-Up Switch
  • 100-kHz Maximum Switching Frequency Enables High-Power Density Charger Designs
  • Resonant Valley-Switching Operation for Highest Overall Efficiency
  • Frequency Jitter to Ease EMI Compliance
  • Wide VDD Range Allows Small Bias Capacitor
  • Clamped Gate-Drive Output for MOSFET
  • Overvoltage, Low-Line, and Overcurrent Protection Functions
  • Programmable Cable Compensation (UCC28710)
  • NTC Resistor Interface (UCC28711, UCC28712 and UCC28713) with Fixed Cable Compensation Options
  • SOIC-7 Package
  • Create a Custom Design Using the UCC28710 With the WEBENCH® Power Designer
  • < 10-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-Coupler
  • ±5% Voltage and Current Regulation Across Line and Load
  • 700-V Start-Up Switch
  • 100-kHz Maximum Switching Frequency Enables High-Power Density Charger Designs
  • Resonant Valley-Switching Operation for Highest Overall Efficiency
  • Frequency Jitter to Ease EMI Compliance
  • Wide VDD Range Allows Small Bias Capacitor
  • Clamped Gate-Drive Output for MOSFET
  • Overvoltage, Low-Line, and Overcurrent Protection Functions
  • Programmable Cable Compensation (UCC28710)
  • NTC Resistor Interface (UCC28711, UCC28712 and UCC28713) with Fixed Cable Compensation Options
  • SOIC-7 Package
  • Create a Custom Design Using the UCC28710 With the WEBENCH® Power Designer

The UCC2871x family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

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

Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive 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 controllers have a maximum switching frequency of 100 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28710 allow the cable compensation to be programmed. The UCC28711, UCC28712 and UCC28713 devices allow remote temperature sensing using a negative temperature coefficient (NTC) resistor while providing fixed cable-compensation levels.

The UCC2871x family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

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

Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive 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 controllers have a maximum switching frequency of 100 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28710 allow the cable compensation to be programmed. The UCC28711, UCC28712 and UCC28713 devices allow remote temperature sensing using a negative temperature coefficient (NTC) resistor while providing fixed cable-compensation levels.

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UCC28712 AKTIV Konstantspannungs-, Konstantstrom-PWM mit PSR, Valley-Switching, NTC-Option und 150-mV-Kabel-Komp. Cable compensation threshold is 150 mV versus 0 mV

Technische Dokumentation

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Typ Titel Datum
* Data sheet UCC2871x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. C) PDF | HTML 30 Jun 2017
Selection guide Current Sense Amplifiers (Rev. E) 20 Sep 2021
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 31 Aug 2021
Application note Minimize Standby Consumption for UCC287XX Family 01 Aug 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Troubleshooting TI PSR controllers 03 Okt 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
More literature Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter 29 Okt 2013
EVM User's guide Using the UCC28711EVM-160 14 Sep 2012

Design und Entwicklung

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

Evaluierungsplatine

UCC28711EVM-160 — UCC28711-Evaluierungsmodul

The Texas Instruments UCC28711EVM-160 evaluation module (EVM) helps designers evaluate the performance of the UCC28711 Constant-Voltage, Constant-Current PWM with Primary-Side Regulation. The 5W EVM is used for evaluating an off line adapter for USB applications. It converts a 90V to 265V RMS (...)
Benutzerhandbuch: PDF
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
Simulationsmodell

UCC2871x PSpice Transient Model

SLUM464.ZIP (17619 KB) - PSpice Model
Simulationsmodell

UCC2871x TINA-TI Transient Reference Design

SLUM539.TSC (224 KB) - TINA-TI Reference Design
Simulationsmodell

UCC2871x TINA-TI Transient Spice Model

SLUM538.ZIP (119 KB) - TINA-TI Spice Model
Berechnungstool

SLUC590 UCC2871x Calculator

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC- und DC/DC-Controller (externer FET)
UCC28710 Konstantspannungs- und Konstantstrom-PWM mit PSR, Valley-Switching und programmierbarer Kabelkompens UCC28711 Konstantspannungs-, Konstantstrom-PWM mit PSR, Valley-Switching, NTC-Option und 0-mV-Kabel-Komp. UCC28712 Konstantspannungs-, Konstantstrom-PWM mit PSR, Valley-Switching, NTC-Option und 150-mV-Kabel-Komp. UCC28713 Konstantspannungs-, Konstantstrom-PWM mit PSR, Valley-Switching, NTC-Option und 300-mV-Kabel-Komp.
Referenzdesigns

TIDA-00440 — Referenzdesign zur Leckstrommessung für die Bestimmung des Isolationswiderstands

This reference design measures insulation resistance up to 100 MΩ. It has an on-board isolated 500-Vdc power supply and an isolated signal conditioning circuit to measure the leakage current. This design is useful to find leakage due to insulation breakdown in transformer and motor windings.
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP21927 — Referenzdesign für 15-W-Flyback-Controller mit Multi-Ausgang

This reference design takes a universal Vac input and creates three isolated 15-Vdc outputs. The main output can be loaded up to 1-A and achieves over 86% efficiency. The other isolated 15-V outputs can be loaded to 50-mA. These outputs have linear regulators to keep the voltages within 1% (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00173 — Referenzdesign einer isolierten Flyback-Stromversorgung für Motorantriebe mit 400 bis 690 V Eingangs

This reference design provides isolated +24V (45W), ±16 V (4.5W), and +6V (0.5W) outputs to power the control electronics in variable speed drives.  The power supply can be either powered directly from 3-phase AC mains (380Vac to 690Vac) or can be powered from the DC-link voltage (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00315 — Referenzdesign für isolierte Stromversorgung von Servoantrieben, 30 W, Eingang 100/200 V AC

This reference design provides isolated 24Vdc, 16Vdc (x3) and 6V outputs to power the control electronics, IGBT module and fan for 100Vac/200Vac input servo drives. The power supply can be either powered directly from a single or 3- phase AC mains or can be powered from the DC link voltage. This (...)
Design guide: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SOIC (D) 7 Ultra Librarian

Bestellen & Qualität

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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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