Herramienta de cálculo
UCC28711
PWM de tensión y corriente constantes con PSR, conmutación de valle, opción NTC y compensación de ca
Hoja de datos
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.
Documentación técnica
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Ver todo 10 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | 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 ago 2021 | |
| Application note | Minimize Standby Consumption for UCC287XX Family | 01 ago 2019 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 jun 2018 | ||
| Application note | Troubleshooting TI PSR controllers | 03 oct 2016 | ||
| White paper | Control Challenges for Low Power AC/DC Converters | 02 oct 2015 | ||
| White paper | Control Challenges for Low Power AC/DC Converters (PPT) | 02 oct 2015 | ||
| More literature | Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter | 29 oct 2013 | ||
| EVM User's guide | Using the UCC28711EVM-160 | 14 sep 2012 |
Diseño y desarrollo
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
Placa de evaluación
UCC28711EVM-160 — Módulo de evaluación UCC28711
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 (...)
Guía del usuario: PDF
Placa de evaluación
UCC28740EVM-525 — Módulo de evaluación UCC28740EVM-525
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 (...)
Guía del usuario: PDF
Modelo de simulación
UCC2871x TINA-TI Transient Reference Design
SLUM539.TSC (224 KB) - TINA-TI Reference Design
Modelo de simulación
UCC2871x TINA-TI Transient Spice Model
SLUM538.ZIP (119 KB) - TINA-TI Spice Model
Diseños de referencia
TIDA-00440 — Diseño de referencia de medición de corriente de fuga para determinar la resistencia del aislamiento
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.
Diseños de referencia
PMP21927 — Diseño de referencia flyback fuera de línea de 15 W
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% (...)
Diseños de referencia
TIDA-00173 — Diseño de referencia de fuente de alimentación aislada de retorno de 50 W, entrada de 400 V a 690 VC
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 (...)
Diseños de referencia
TIDA-00315 — Diseño de referencia de fuente de alimentación aislada de entrada de 100/200 VCA y 30 W para servoac
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 (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| SOIC (D) | 7 | Ultra Librarian |
Pedidos y calidad
Información incluida:
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
Información incluida:
- Lugar de fabricación
- Lugar de ensamblaje
Soporte y capacitación
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