Inicio Gestión de la energía Controladores CA/CC y CC/CC (FET externo)

UCC28722

ACTIVO

Controlador de retorno CVCC de bajo costo con regulación del lado primario para dispositivo de poten

Detalles del producto

Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Features CC/CV output regulation, Cable compensation, DCM, Low power, Overcurrent protection, Primary-side regulated, Quasi-Resonant, Soft start Duty cycle (max) (%) 99
Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Features CC/CV output regulation, Cable compensation, DCM, Low power, Overcurrent protection, Primary-side regulated, Quasi-Resonant, Soft start Duty cycle (max) (%) 99
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • < 50-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-
    Coupler
  • Dynamic BJT Drive
  • ± 5% Voltage and Current Regulation Across Line
    and Load
  • 80-kHz Maximum Switching Frequency Enables
    High-Power Density Charger Designs
  • Quasi-Resonant Valley-Switching Operation for
    Highest Overall Efficiency
  • Wide VDD Range Allows Small Bias Capacitor
  • Output Overvoltage, Low-Line, and Overcurrent
    Protection Functions
  • Programmable Cable Compensation
  • SOT23-6 Package
  • < 50-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-
    Coupler
  • Dynamic BJT Drive
  • ± 5% Voltage and Current Regulation Across Line
    and Load
  • 80-kHz Maximum Switching Frequency Enables
    High-Power Density Charger Designs
  • Quasi-Resonant Valley-Switching Operation for
    Highest Overall Efficiency
  • Wide VDD Range Allows Small Bias Capacitor
  • Output Overvoltage, Low-Line, and Overcurrent
    Protection Functions
  • Programmable Cable Compensation
  • SOT23-6 Package

The UCC28722 flyback power supply controller provides isolated-output constant-voltage (CV) and constant-current (CC) output regulation without the use of an optical coupler. The device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

Dynamically-controlled operating states and a tailored modulation profile support high-efficiency operation at all load levels without sacrificing output transient response.

Control algorithms in the UCC28722 device allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a bipolar transistor power switch, enabling lower-cost converter design. Discontinuous conduction mode (DCM) with valley switching reduces switching losses, while 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 80 kHz and always maintains control of the peak-primary current in the transformer. Output overvoltage and overcurrent as well as input undervoltage protection features help keep primary and secondary component stresses in check. The UCC28722 also allows compensation for voltage drop in the cable to be programmed with an external resistor.

The UCC28722 flyback power supply controller provides isolated-output constant-voltage (CV) and constant-current (CC) output regulation without the use of an optical coupler. The device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

Dynamically-controlled operating states and a tailored modulation profile support high-efficiency operation at all load levels without sacrificing output transient response.

Control algorithms in the UCC28722 device allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a bipolar transistor power switch, enabling lower-cost converter design. Discontinuous conduction mode (DCM) with valley switching reduces switching losses, while 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 80 kHz and always maintains control of the peak-primary current in the transformer. Output overvoltage and overcurrent as well as input undervoltage protection features help keep primary and secondary component stresses in check. The UCC28722 also allows compensation for voltage drop in the cable to be programmed with an external resistor.

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Documentación técnica

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Tipo Título Fecha
* Data sheet UCC28722 Constant-Voltage, Constant-Current Controller With Primary-Side Regulation, BJT Drive datasheet (Rev. B) PDF | HTML 30 oct 2015
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 31 ago 2021
Application note Common-Mode-Chokeless Bias Supply Reference Design Example 02 ene 2020
Application note Minimize Standby Consumption for UCC287XX Family 01 ago 2019
Application note Selecting Electrolitic Bus Capacitor for Universal Input 17 jul 2018
Application note Maximum Output Power and Thermal Considerations for UCC28720 and UCC28722 06 dic 2017
Application note AC-DC Non-Isolated SMPS for Single-Phase Smart Meters Based on UCC28722 (Rev. A) 02 nov 2017
Technical article Making smart meter eFuses robust and reliable PDF | HTML 28 jun 2017
Technical article Powering the IoT PDF | HTML 26 ene 2017
Application note Troubleshooting TI PSR controllers 03 oct 2016
Technical article Solving the biggest challenges when designing smart meter power supplies PDF | HTML 06 sep 2016
Application note UCC28722, Bias Supply Design Considerations for Intelligent eMeter Applications 05 ago 2016
Technical article Slim down your flyback; lose that excess snubber PDF | HTML 15 feb 2016
Application note Versatile Buck-Boost driver based on UCC28722 for 5W-9W LED Bulb 08 dic 2015
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
Technical article Designing multiple output converters with primary side sensing PDF | HTML 04 ago 2015
Application note 5-W USB Flyback Design Example Using the UCC28722 08 ene 2014

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

UCC28720EVM-212 — Módulo de evaluación UCC28720EVM-212 para adaptador USB fuera de línea de 5 W

The UCC28720EVM-212 is a 5W evaluation module for evaluating an off line adapter for USB applications. It is intended for evaluation purposes and is not intended to be an end product. The UCC28720EVM-212 converters 100V to 240V RMS input voltage down to 5V DC, with a 1A current limit for USB (...)
Guía del usuario: PDF
Modelo de simulación

UCC28722 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM466A.ZIP (64 KB) - PSpice Model
Herramienta de cálculo

SLUC528 UCC28722 MathCad Design Tool

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
UCC28720 Controlador de corriente y tensión constantes con regulación del lado primario para dispositivos de UCC28722 Controlador de retorno CVCC de bajo costo con regulación del lado primario para dispositivo de poten
Herramienta de cálculo

SLUC529 UCC28722 Excel Design Tool

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
UCC28720 Controlador de corriente y tensión constantes con regulación del lado primario para dispositivos de UCC28722 Controlador de retorno CVCC de bajo costo con regulación del lado primario para dispositivo de poten
Diseños de referencia

PMP10236 — Diseño de referencia de una salida doble de 5 V a 300 mA y 15 V a 100 mA aislada de 85 V a 440 V de

This is an isolated quasi-resonant flyback converter, supplying 5 V at 300 mA and 15 V at 100 mA; both outputs are isolated from each other. The UCC28722 has been chosen to drive a low-cost high-voltage BJT transistor.
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP10397 — Diseño de referencia de rango de entrada ultra amplio, salida doble, alimentación de polarización

Este diseño utiliza el circuito integrado UCC28722 con regulación del lado primario (PSR) de bajo costo con un transistor bipolar para aplicaciones de rango de entrada ultra amplio (desde 85 VCA hasta 528 VCA). Se generan dos salidas con conexiones a tierra separadas, una de 5 V/0.3 A y la otra de (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP30281 — Diseño de referencia flyback de 85 VCA a 480 VCA de entrada y salida múltiple

This offline flyback reference design uses the UCC28722 controller to generate 2 isolated outputs (5 V at 400 mA, 24 V at 300 mA) from an AC input (85 VAC - 480 VAC). The UCC28722 output drive interfaces to a bipolar transistor power switch, enabling a more efficient design than a typical design. (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP7668 — Diseño de referencia para fuente de alimentación de polarización de entrada amplia de 2 W

Este diseño de referencia es una fuente de alimentación de polarización de 2 W para aplicaciones que requieren funcionar en un amplio rango de entrada (de 110 a 500 VAC). Su factor de forma pequeño (69 mm × 26 mm) y alta eficiencia lo vuelven un diseño ideal para aplicaciones de contador (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP11062 — Diseño de referencia de regulador de factor de potencia universal de entrada de CA, 380 V/1 kW CCM B

The PMP11062 reference design uses the UCC28180 CCM PFC controller to generate a 380V/1kW output from a universal AC input. In addition to that, the UCC28722  PSR controller is used as bias supply in this design. Over 96% peak efficiency is achieved at  120VAC/60Hz input and over 98% (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP11211 — Diseño de referencia de regulador de factor de potencia Boost CCM de 200 kHz 380 V/1 kW y entrada de

The PMP11211 reference design uses the UCC28180 CCM PFC controller to generate a 380V/1kW output from a universal AC input. In addition to that, the UCC28722  PSR controller is used as bias supply in this design. Over 94% peak efficiency is achieved at  120VAC/60Hz input and over 97% (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP12074 — Diseño de referencia de regulador de factor de potencia 380 V/1 kW CCM Boost con entrada de 230 VCA,

The PMP12074 reference design uses the UCC28180 CCM PFC controller to generate a 380V/1kW output from a 230VAC input. In addition to that, the UCC28722  PSR controller is used as bias supply in this design. Over 97% efficiency is achieved at 230VAC/50Hz input with fixed 200kHz switching (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDA-00583 — Diseño de referencia de PSU de retorno de CA/CC de 5 V/1.6 A y 12 V/10 mA para aplicaciones de medid

The TIDA-00583 is a Flyback converter which can operate in very low AC line input (Minimum 45Vac) and provide a regulated, fully-isolated 5V@1.6A output for communication model of E-meter, as well as another low-power 12V non-isolated output. Featuring TIs UCC28722 PSR controller which provides (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDA-00628 — Diseño de referencia de convertidor de retorno CA/CC sin amortiguador, sin aislamiento con transform

TIDA-00628 is a 15V/6.5W non-isolated, single output, AC/DC Flyback power supply that is capable of operating from wide input voltage ranging from 85Vac to 440Vac. This design demonstrates 2 key features (1) the elimination of snubber components enabled by use of a high-voltage bipolar transistor (...)
Design guide: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23 (DBV) 6 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

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

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