UCC28711
Konstantspannungs-, Konstantstrom-PWM mit PSR, Valley-Switching, NTC-Option und 0-mV-Kabel-Komp.
UCC28711
- < 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.
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Technische Dokumentation
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.
UCC28711EVM-160 — UCC28711-Evaluierungsmodul
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 (...)
UCC2871x TINA-TI Transient Reference Design
TIDA-00440 — Referenzdesign zur Leckstrommessung für die Bestimmung des Isolationswiderstands
PMP21927 — Referenzdesign für 15-W-Flyback-Controller mit Multi-Ausgang
TIDA-00173 — Referenzdesign einer isolierten Flyback-Stromversorgung für Motorantriebe mit 400 bis 690 V Eingangs
TIDA-00315 — Referenzdesign für isolierte Stromversorgung von Servoantrieben, 30 W, Eingang 100/200 V AC
Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
SOIC (D) | 7 | Ultra Librarian |
Bestellen & Qualität
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- MTBF-/FIT-Schätzungen
- Materialinhalt
- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
- Werksstandort
- Montagestandort
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