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UCC25800-Q1

ACTIVO

Controlador de transformador EMI ultrabajo para fuentes de polarización aisladas

Detalles del producto

Topology Resonant LLC Control mode Open-loop control Features Adjustable switching frequency, Current limiting, Enable, Resonant, Soft start, Thermal shutdown Duty cycle (max) (%) 50 Sector Test & measurement
Topology Resonant LLC Control mode Open-loop control Features Adjustable switching frequency, Current limiting, Enable, Resonant, Soft start, Thermal shutdown Duty cycle (max) (%) 50 Sector Test & measurement
HVSSOP (DGN) 8 14.7 mm² (3 mm × 4.9 mm)
  • High-efficiency half-bridge transformer driver
  • Ultra-low EMI with low interwinding capacitance
  • Smaller and lower-cost transformer
    • Programmable frequency: 0.1 MHz to 1.2 MHz
  • Wide input voltage range: 9 V to 34 V
    • 9 W from 34-V input
    • 6 W from 24-V input
    • 4 W from 15-V input
  • Automatic dead-time adjustment with maximum dead-time programming
  • External clock synchronization for low noise
  • Robust protection features
    • Undervoltage lockout (UVLO)
    • Programmable over-current protection (OCP)
    • Input overvoltage protection (OVP)
    • Over temperature protection (TSD)
    • Integrated soft-start to reduce in-rush current
    • External disable function with fault-code output
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
  • Functional Safety-Capable
  • 8-Pin DGN package with thermal pad
  • High-efficiency half-bridge transformer driver
  • Ultra-low EMI with low interwinding capacitance
  • Smaller and lower-cost transformer
    • Programmable frequency: 0.1 MHz to 1.2 MHz
  • Wide input voltage range: 9 V to 34 V
    • 9 W from 34-V input
    • 6 W from 24-V input
    • 4 W from 15-V input
  • Automatic dead-time adjustment with maximum dead-time programming
  • External clock synchronization for low noise
  • Robust protection features
    • Undervoltage lockout (UVLO)
    • Programmable over-current protection (OCP)
    • Input overvoltage protection (OVP)
    • Over temperature protection (TSD)
    • Integrated soft-start to reduce in-rush current
    • External disable function with fault-code output
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
  • Functional Safety-Capable
  • 8-Pin DGN package with thermal pad

The UCC25800-Q1 ultra-low EMI transformer driver integrates the switching power stage, the control, and the protection circuits to simplify isolated bias supply designs. It allows the design to utilize a transformer with higher leakage inductance, but much smaller parasitic primary-to-secondary capacitance. This low-capacitance transformer design enables an order of magnitude reduction in the common-mode current injection through the bias transformer. This makes the transformer driver an ideal solution for the isolated bias supply in various automotive applications to minimize the EMI noise caused by the high-speed switching devices. The soft-switching feature further reduces the EMI noise.

The transformer driver has a programmable frequency range of 100 kHz to 1.2 MHz. This high switching frequency reduces the transformer size and footprint, as well as the overall cost of the bias supply. The integrated SYNC function allows the system bias supplies to synchronize with an external clock signal, further reducing the system level noise.

The dead-time adjusts automatically to minimize the conduction loss and simplify the design. The programmable maximum dead-time ensures power stage design flexibility.

With the integrated, low-resistance switching power stage, the transformer driver can achieve a 6-W design with 24-V input, and up to 9-W from 34-V input. With a fixed input voltage, the open-loop control also helps the output regulation to remain ±5% when the load is above 10%.

The programmable overcurrent protection (OCP) allows flexibility on the power stage design to minimize the transformer size. The protection features such as adjustable OCP, input OVP, TSD and the protection from pin faults ensure robust operation. A fixed 1.5-ms soft-start period reduces the inrush current during start-up and fault recovery.

The transformer driver also provides a dedicated multi-function pin for external disabling, and fault code reporting. The fault code reporting sends the fault code once the bias supply is in the protection mode.

The UCC25800-Q1 transformer driver is offered in an 8-pin DGN package with the thermal pad to enhance its thermal handling capability.

The UCC25800-Q1 ultra-low EMI transformer driver integrates the switching power stage, the control, and the protection circuits to simplify isolated bias supply designs. It allows the design to utilize a transformer with higher leakage inductance, but much smaller parasitic primary-to-secondary capacitance. This low-capacitance transformer design enables an order of magnitude reduction in the common-mode current injection through the bias transformer. This makes the transformer driver an ideal solution for the isolated bias supply in various automotive applications to minimize the EMI noise caused by the high-speed switching devices. The soft-switching feature further reduces the EMI noise.

The transformer driver has a programmable frequency range of 100 kHz to 1.2 MHz. This high switching frequency reduces the transformer size and footprint, as well as the overall cost of the bias supply. The integrated SYNC function allows the system bias supplies to synchronize with an external clock signal, further reducing the system level noise.

The dead-time adjusts automatically to minimize the conduction loss and simplify the design. The programmable maximum dead-time ensures power stage design flexibility.

With the integrated, low-resistance switching power stage, the transformer driver can achieve a 6-W design with 24-V input, and up to 9-W from 34-V input. With a fixed input voltage, the open-loop control also helps the output regulation to remain ±5% when the load is above 10%.

The programmable overcurrent protection (OCP) allows flexibility on the power stage design to minimize the transformer size. The protection features such as adjustable OCP, input OVP, TSD and the protection from pin faults ensure robust operation. A fixed 1.5-ms soft-start period reduces the inrush current during start-up and fault recovery.

The transformer driver also provides a dedicated multi-function pin for external disabling, and fault code reporting. The fault code reporting sends the fault code once the bias supply is in the protection mode.

The UCC25800-Q1 transformer driver is offered in an 8-pin DGN package with the thermal pad to enhance its thermal handling capability.

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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 UCC25800-Q1 Ultra-low EMI Transformer Driver for Isolated Bias Supplies datasheet (Rev. C) PDF | HTML 14/08/2023
Informe Addressing High-Volt Design Challenges w/ Reliable and Affordable Isolation Tech (Rev. D) PDF | HTML 15/05/2026
Application brief Optimized Excitation Power Stage for Electrically Excited Synchronous Machines (Rev. A) PDF | HTML 5/05/2026
Artículo técnico How isolated bias transformer parasitic capacitance impacts EMI performance PDF | HTML 22/09/2025
Nota sobre la aplicación Inrush Current Reduction Considerations for UCC25800- Q1 in Parallel Startup Applications PDF | HTML 29/07/2025
Informe Isolated Bias Power Supply Architecture for HEV and EV Onboard Chargers PDF | HTML 27/11/2024
Product overview Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications (Rev. A) PDF | HTML 20/08/2024
Informe Low-Cost, High-Performance Auxiliary Power Supply Solution for 11KW OBC PDF | HTML 9/07/2024
Artículo técnico Increasing power density with an integrated GaN solution PDF | HTML 14/03/2022
Artículo técnico Misconceptions about EV charging PDF | HTML 24/02/2022
Más documentación Isolated bias supply solutions for isolated gate drivers 15/12/2021
Más documentación Isolated gate-driver bias-supply design considerations PPT 2/12/2021
Nota sobre la aplicación Bias Supply Design for Isolated Gate Driver Using UCC25800-Q1 (Rev. A) PDF | HTML 1/12/2021
Guía del usuario Using the UCC25800EVM-037 2-W LLC Half-Bridge Converter with Pre-Regulator (Rev. A) PDF | HTML 12/10/2021
Información sobre seguridad funcional UCC25800-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 1/09/2021
Certificado UCC25800EVM-037 EU RoHS Declaration of Conformity (DoC) 16/12/2020
Artículo técnico Two simple isolated power options for 8 W or less PDF | HTML 29/07/2019

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

UCC21710QDWEVM-054 — Módulo de evaluación UCC21710 para plataformas Wolfspeed® 1200 V SiC

El UCC21710QDWEVM-054 es un módulo de evaluación de controlador de compuerta de medio puente compacto que consta de dos controladores de compuertas aislados monocanal. Este módulo de evaluación proporciona la tensión de suministro, el accionamiento, la protección y la supervisión necesarios para (...)

Guía del usuario: PDF | HTML
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Placa de evaluación

UCC21750QDWEVM-054 — Módulo de evaluación UCC21750 para plataformas Wolfspeed® 1200 V SiC

El UCC21750QDWEVM-054 es un módulo de evaluación de controlador de puerta de medio puente compacto que consta de dos controladores de compuertas aislados de único canal. El módulo de evaluación proporciona la tensión de suministro, el accionamiento, la protección y la supervisión necesarios para (...)

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Placa de evaluación

UCC25800EVM-1 — Módulo de evaluación UCC25800 para convertidor LLC de 2 W con entrada CC de 6 V a 26 V y salidas de

Este convertidor controlador de transformador LLC de bucle abierto aislado se basa en el dispositivo UCC25800 y tiene un par de salidas, +18 V y -5 V y proporciona una potencia de salida de hasta 2 W a partir de una entrada de CC de 6 V a 26 V para proporcionar potencia de polarización aislada a (...)

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Modelo de simulación

UCC25800-Q1 PSpice Transient Model with Sync

SLUM810.ZIP (96 KB) - Modelo PSpice
Productos y hardware compatibles
Modelo de simulación

UCC25800-Q1 PSpice Transient Model without Sync

SLUM807.ZIP (89 KB) - Modelo PSpice
Productos y hardware compatibles
Modelo de simulación

UCC25800-Q1 SIMPLIS Transient Model

SLUM781.ZIP (152 KB) - Modelo SIMPLIS
Productos y hardware compatibles
Herramienta de cálculo

SLUC705 — UCC25800-Q1 design Calculator

Productos y hardware compatibles

Muchos diseños de referencia de TI incluyen UCC25800-Q1

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Pedidos y calidad

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