Inicio Administración de potencia Reguladores de conmutación CA/CC Convertidores de CA/CC

UCC28910

ACTIVO

Retorno de conmutación de 700 V con corriente y tensión constantes y control del lado primario

Detalles del producto

Rating Catalog Topology Buck, Flyback Iout (max) (A) 0.6 Vin (max) (V) 450 Vin (min) (V) 20 Vout (max) (V) 24 Vout (min) (V) 3.3 Features Current limiting, Green mode, High voltage startup, High-voltage startup, Input line monitor, Integrated Switch, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Soft start Control mode Current, Primary-side regulation, Voltage Switching frequency (min) (kHz) 0.42 Switching frequency (max) (kHz) 115 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 23500 Duty cycle (max) (%) 99
Rating Catalog Topology Buck, Flyback Iout (max) (A) 0.6 Vin (max) (V) 450 Vin (min) (V) 20 Vout (max) (V) 24 Vout (min) (V) 3.3 Features Current limiting, Green mode, High voltage startup, High-voltage startup, Input line monitor, Integrated Switch, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Soft start Control mode Current, Primary-side regulation, Voltage Switching frequency (min) (kHz) 0.42 Switching frequency (max) (kHz) 115 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 23500 Duty cycle (max) (%) 99
SOIC (D) 7 29.4 mm² (4.9 mm × 6 mm)
  • Constant-Voltage (CV) and Constant-Current (CC) Output Regulation Without Optical-Coupler
  • ±5% Output Voltage Regulation Accuracy
  • ±5% Output Current Regulation With AC Line and Primary Inductance Tolerance Compensation
  • 700-V Start-Up and Smart Power Management Enables <30-mW Standby Power
  • 115-kHz Maximum Switching Frequency Design for High-Power Density
  • Valley Switching and Frequency Dithering to Ease EMI Compliance
  • Thermal Shut Down
  • Low Line and Output Over-Voltage Protection
  • Constant-Voltage (CV) and Constant-Current (CC) Output Regulation Without Optical-Coupler
  • ±5% Output Voltage Regulation Accuracy
  • ±5% Output Current Regulation With AC Line and Primary Inductance Tolerance Compensation
  • 700-V Start-Up and Smart Power Management Enables <30-mW Standby Power
  • 115-kHz Maximum Switching Frequency Design for High-Power Density
  • Valley Switching and Frequency Dithering to Ease EMI Compliance
  • Thermal Shut Down
  • Low Line and Output Over-Voltage Protection

The UCC28910 and UCC28911 are high-voltage flyback switchers that provide output voltage and current regulation without the use of an optical coupler. Both devices incorporate a 700-V power FET and a controller that process operating information from the flyback auxiliary winding and power FET to provide a precise output voltage and current control. The integrated high-voltage current source for startup that is switched off during device operation, and the controller current consumption is dynamically adjusted with load. Both enable the very low stand-by power consumption.

Control algorithms in the UCC28910 and UCC28911, combining switching frequency and peak primary current modulation, allow operating efficiencies to meet or exceed applicable standards. Discontinuous conduction mode (DCM) with valley switching is used to reduce switching losses. Built-in protection features help to keep secondary and primary component stress levels in check across the operating range. The frequency jitter helps to reduce EMI filter

The UCC28910 and UCC28911 are high-voltage flyback switchers that provide output voltage and current regulation without the use of an optical coupler. Both devices incorporate a 700-V power FET and a controller that process operating information from the flyback auxiliary winding and power FET to provide a precise output voltage and current control. The integrated high-voltage current source for startup that is switched off during device operation, and the controller current consumption is dynamically adjusted with load. Both enable the very low stand-by power consumption.

Control algorithms in the UCC28910 and UCC28911, combining switching frequency and peak primary current modulation, allow operating efficiencies to meet or exceed applicable standards. Discontinuous conduction mode (DCM) with valley switching is used to reduce switching losses. Built-in protection features help to keep secondary and primary component stress levels in check across the operating range. The frequency jitter helps to reduce EMI filter

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos UCC28910, UCC28911 High-Voltage Flyback Switcher with Primary-Side Regulation and Output Current Control datasheet (Rev. D) PDF | HTML 19/12/2016
Artículo técnico How an upside-down buck offers a topology alternative to the non-isolated flyback PDF | HTML 26/02/2024
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Nota sobre la aplicación Troubleshooting TI PSR controllers 3/10/2016
Guía de diseño Wi-Fi Enabled Level 1 Level 2 Electric Vehicle Service Equipment Design Guide 16/08/2016
Nota sobre la aplicación Non-Isolated High-Side Buck Converter With UCC28910 1/06/2016
Informe Redefining power management through high-voltage innovation 12/11/2015
Informe Control Challenges for Low Power AC/DC Converters 2/10/2015
Informe Control Challenges for Low Power AC/DC Converters (PPT) 2/10/2015
Artículo técnico Designing multiple output converters with primary side sensing PDF | HTML 4/08/2015

Diseño y desarrollo

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Placa de evaluación

UCC28910FBEVM-526 — Módulo de evaluación UCC28910FBEVM-526

Fuente de alimentación flyback aislada de 5 V de entrada universal y 6 W con control del lado principal

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Placa de evaluación

UCC28911EVM-718 — Módulo de evaluación UCC28911

Módulo de ev. UCC28911EVM-718, fuente de alimentación de retorno fuera de línea, da regulación aislada de tensión y corriente de salida sin optoacoplador y componentes de realim. del lado secundario. La entrada acepta un rango de 85 VAC a 265 VAC, 47 Hz a 64 Hz. El módulo de evaluación usa el (...)

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Herramienta de cálculo

SLUC503 — UCC28910 Design Calculator

Productos y hardware compatibles

Muchos diseños de referencia de TI incluyen UCC28910

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