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UCG28826

ACTIVO

Convertidor de retorno QR de alta frecuencia con polarización propia y GaN integrado (65 W)

Detalles del producto

Rating Catalog Topology Flyback Switch current limit (typ) (A) 3.5 Features Adjustable current limit, Auxless-sense, High-voltage startup, Integrated GaN FET, Over Current Protection, Over Temperature Protection, Over Voltage Protection, Self-bias, Short circuit protection, USB C/PD compatible, Under Voltage Protection, X-cap discharge EMI features Frequency Dithering, Switching slew rate control, Valley hopping Control mode Peak current mode Switching frequency (min) (kHz) 25 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 105 Type Converter (Integrated Switch)
Rating Catalog Topology Flyback Switch current limit (typ) (A) 3.5 Features Adjustable current limit, Auxless-sense, High-voltage startup, Integrated GaN FET, Over Current Protection, Over Temperature Protection, Over Voltage Protection, Self-bias, Short circuit protection, USB C/PD compatible, Under Voltage Protection, X-cap discharge EMI features Frequency Dithering, Switching slew rate control, Valley hopping Control mode Peak current mode Switching frequency (min) (kHz) 25 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 105 Type Converter (Integrated Switch)
VQFN (REZ) 12 25 mm² 5 x 5
  • Integrated 750V GaN with 170mΩ Rds(on) option
  • Dynamic QR/DCM/CCM modes of operation
  • High power density: up to 500kHz switching frequency
  • Enable low BoM cost by integration
    • Remove auxiliary winding with self bias
    • Integrated input and output voltage sensing
    • Integrated current sense
    • Integrated HV startup
    • Integrated X-cap discharge
  • High efficiency and low EMI performance
    • Ultra-low standby power: <30mW
    • Frequency foldback and burst mode
    • Valley locking
    • Frequency dithering
    • Switching slew rate control
  • Comprehensive protection features
    • Overtemperature protection
    • Overvoltage protection
    • Short-circuit protection
    • Cycle-by-cycle current limit
    • Two-level over power protection with LPS
    • Brownin and brownout protection
    • Open feedback protection
  • Flexible configurability via external resistors
    • X-cap discharge and CCM mode disable
    • Selectable switching slew rate
    • Multiple clamping frequency settings
    • Fault latch or auto-restart
    • Maximum and minimum peak current ratio
    • Dithering amplitude
  • Integrated 750V GaN with 170mΩ Rds(on) option
  • Dynamic QR/DCM/CCM modes of operation
  • High power density: up to 500kHz switching frequency
  • Enable low BoM cost by integration
    • Remove auxiliary winding with self bias
    • Integrated input and output voltage sensing
    • Integrated current sense
    • Integrated HV startup
    • Integrated X-cap discharge
  • High efficiency and low EMI performance
    • Ultra-low standby power: <30mW
    • Frequency foldback and burst mode
    • Valley locking
    • Frequency dithering
    • Switching slew rate control
  • Comprehensive protection features
    • Overtemperature protection
    • Overvoltage protection
    • Short-circuit protection
    • Cycle-by-cycle current limit
    • Two-level over power protection with LPS
    • Brownin and brownout protection
    • Open feedback protection
  • Flexible configurability via external resistors
    • X-cap discharge and CCM mode disable
    • Selectable switching slew rate
    • Multiple clamping frequency settings
    • Fault latch or auto-restart
    • Maximum and minimum peak current ratio
    • Dithering amplitude

UCG2882x is a high frequency, quasi-resonant flyback converter with built-in 750V GaN high electron mobility transistor (HEMT) with as low as 170mΩ Rds(on) for AC to DC power conversion. It is best suited for high power density applications such as cell phone fast chargers and notebook adapters. The key feature of this device is the self-bias and auxless sensing scheme which eliminates the need of the auxiliary winding and simplifies the system design with higher efficiency.

This device also features intelligent mode transition (CCM/QR/DCM) to enable high efficiency across wide power range and <30mW standby power consumption. In addition, UCG2882x includes a full list of protections such as brown-in/out protection, SCP, OVP, OPP, LPS, OFB and OTP. The cycle-by-cycle current limit ensures fast response to the fault conditions to safeguard the system and improve the reliability. In a small 5×5mm package, the UCG2882x has dedicated configuration pins to offer more flexibility. Only resistors are needed to tune certain parameters for each system, enabling a platform design with a single device.

UCG2882x is a high frequency, quasi-resonant flyback converter with built-in 750V GaN high electron mobility transistor (HEMT) with as low as 170mΩ Rds(on) for AC to DC power conversion. It is best suited for high power density applications such as cell phone fast chargers and notebook adapters. The key feature of this device is the self-bias and auxless sensing scheme which eliminates the need of the auxiliary winding and simplifies the system design with higher efficiency.

This device also features intelligent mode transition (CCM/QR/DCM) to enable high efficiency across wide power range and <30mW standby power consumption. In addition, UCG2882x includes a full list of protections such as brown-in/out protection, SCP, OVP, OPP, LPS, OFB and OTP. The cycle-by-cycle current limit ensures fast response to the fault conditions to safeguard the system and improve the reliability. In a small 5×5mm package, the UCG2882x has dedicated configuration pins to offer more flexibility. Only resistors are needed to tune certain parameters for each system, enabling a platform design with a single device.

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Documentación técnica

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Tipo Título Fecha
* Data sheet UCG2882x Self-Biased High Frequency QR Flyback Converter With Integrated GaN datasheet (Rev. A) PDF | HTML 08 may 2025
EVM User's guide Using the UCG28826EVM-093 65W USB-C PD High-Density GaN Integrated Quasi-Resonant Flyback Converter (Rev. B) PDF | HTML 14 may 2025
Application note How to Size the VCC Cap for a VCC Self-Biasing Based GaN Flyback Converter PDF | HTML 01 abr 2025
Technical article How an auxless GaN flyback converter can solve AC/DC adapter design challenges (Rev. A) PDF | HTML 11 feb 2025

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

UCG28826EVM-093 — Módulo de evaluación del UCG28826

El UCG28826EVM-093 es un módulo de evaluación (EVM) USB-C® PD de 65 W para evaluar un adaptador de retorno cuasirresonante integrado de GaN fuera de línea para adaptadores de CA/CC, cargadores, tomas de pared USB y otras aplicaciones. El EVM cumple con los requisitos de eficiencia y energía de (...)

Guía del usuario: PDF | HTML
Modelo de simulación

UCG28826 Simplis Model

SLUM953.ZIP (296 KB) - SIMPLIS Model
Herramienta de cálculo

UCG28826-CALC UCG28826 design calculator

System design tool based on flyback converter with integrated GaN
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Convertidores de CA/CC y CC/CC (FET integrado)
UCG28826 Convertidor de retorno QR de alta frecuencia con polarización propia y GaN integrado (65 W)
Diseños de referencia

PMP41131 — Universal AC-input 45W low-profile USB power delivery charger reference design with integrated GaN

This reference design is a 45W, low-profile AC/DC USB Power Delivery (PD) charger reference design with integrated flyback controller and gallium nitride (GaN) power switch. This design can achieve less than 10mm height by using a low-profile planar PCB transformer. The flyback converter UCG28826 (...)
Test report: PDF
Diseños de referencia

PMP41117 — Diseño de referencia de un cargador USB de doble puerto de 65 W con convertidor flyback GaN de polar

Este diseño de referencia es un cargador USB Power Delivery (PD) de doble puerto de 65 W con retorno de nitruro de galio (GaN) de polarización propia. Este diseño puede suministrar 65 W de potencia nominal completa de 90 VAC a 264 VAC y cumplir con estándares y reglamentaciones de eficiencia como (...)
Test report: PDF
Diseños de referencia

PMP41145 — Diseño de referencia fuente de alimentación de 65 W, 20 V y 3.25 A con convertidor de retorno, entra

Este diseño de referencia es una fuente de alimentación CA/CC con una tensión de salida fija de 65 W y 20 V con convertidor retorno y nitruro de galio (GaN) integrados. Este diseño puede suministrar 65 W de plena potencia nominal a un rango que va de los 90 VCA a los 264 VCA y lograr una (...)
Test report: PDF
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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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