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UCD7138

ACTIVO

Single-channel synchronous rectifier driver with body-diode conduction sensing

Detalles del producto

Operating temperature range (°C) -40 to 125 Control mode Dead-time compensation Topology Full-bridge, Resonant Rating Catalog
Operating temperature range (°C) -40 to 125 Control mode Dead-time compensation Topology Full-bridge, Resonant Rating Catalog
WSON (DRS) 6 9 mm² 3 x 3
  • Low-Side Gate Driver With Body-Diode
    Conduction Sensing
  • Gate Turnoff Edge Body-Diode Conduction
    Reporting
  • Gate Turnon Edge Delay Optimization
  • Works Together With the Dead-Time
    Compensation (DTC) Module in the UCD3138A
    Family of Digital Power Controllers:
    • Automatic or Manual Dead-Time Adjustment of
      Gate Turnon and Turnoff Edges
    • Negative Current Protection
  • –150-mV Body-Diode Conduction Sensing
    Threshold
  • Able to Sense Body Diode Conduction Times as
    Low as 10 ns
  • 4-A Peak-Source and 6-A Peak-Sink Drive
    Current
  • Fast Propagation Delays (14-ns Typical)
  • Fast Rise and Fall Times (5-ns Typical)
  • Up to 2-MHz Operating Frequency
  • 4.5-V to 18-V Supply Range
  • Rail-to-Rail Drive Capability
  • VCC Undervoltage Lockout (UVLO)
  • 6-Pin 3-mm × 3-mm WSON-6 Package
  • Low-Side Gate Driver With Body-Diode
    Conduction Sensing
  • Gate Turnoff Edge Body-Diode Conduction
    Reporting
  • Gate Turnon Edge Delay Optimization
  • Works Together With the Dead-Time
    Compensation (DTC) Module in the UCD3138A
    Family of Digital Power Controllers:
    • Automatic or Manual Dead-Time Adjustment of
      Gate Turnon and Turnoff Edges
    • Negative Current Protection
  • –150-mV Body-Diode Conduction Sensing
    Threshold
  • Able to Sense Body Diode Conduction Times as
    Low as 10 ns
  • 4-A Peak-Source and 6-A Peak-Sink Drive
    Current
  • Fast Propagation Delays (14-ns Typical)
  • Fast Rise and Fall Times (5-ns Typical)
  • Up to 2-MHz Operating Frequency
  • 4.5-V to 18-V Supply Range
  • Rail-to-Rail Drive Capability
  • VCC Undervoltage Lockout (UVLO)
  • 6-Pin 3-mm × 3-mm WSON-6 Package

The UCD7138 device is a 4-A and 6-A single-channel MOSFET driver with body-diode conduction sensing and reporting and is a high performance driver that allows the Texas Instruments UCD3138A digital PWM controller to achieve advanced synchronous-rectification (SR) control. The device contains a high-speed gate driver, a body-diode conduction-sensing circuit, and a turnon delay optimization circuit. The device is suitable for high-power, high-efficiency isolated converter applications where SR dead-time optimization is desired.

The UCD7138 device offers asymmetrical rail-to-rail 4-A source and 6-A sink peak-current drive capability. The short propagation delay and fast rise and fall time allows efficient operation at high frequencies. An internal high-speed comparator with a –150-mV threshold detects the body-diode conduction and reports the information to the UCD3138A digital-power controller. The UCD7138 device is capable of sensing body-diode conduction time as low as 10 ns. The SR turnon edge is optimized by the UCD7138 device. The SR turnoff edge is optimized by the UCD3138A digital-power controller which analyzes the body-diode conduction information reported by the UCD7138 DTC pin.

The benefits of the chipset include maximizing system efficiency by minimizing body-diode conduction time, robust and fast negative-current protection, and a simple interface.

The UCD7138 device is a 4-A and 6-A single-channel MOSFET driver with body-diode conduction sensing and reporting and is a high performance driver that allows the Texas Instruments UCD3138A digital PWM controller to achieve advanced synchronous-rectification (SR) control. The device contains a high-speed gate driver, a body-diode conduction-sensing circuit, and a turnon delay optimization circuit. The device is suitable for high-power, high-efficiency isolated converter applications where SR dead-time optimization is desired.

The UCD7138 device offers asymmetrical rail-to-rail 4-A source and 6-A sink peak-current drive capability. The short propagation delay and fast rise and fall time allows efficient operation at high frequencies. An internal high-speed comparator with a –150-mV threshold detects the body-diode conduction and reports the information to the UCD3138A digital-power controller. The UCD7138 device is capable of sensing body-diode conduction time as low as 10 ns. The SR turnon edge is optimized by the UCD7138 device. The SR turnoff edge is optimized by the UCD3138A digital-power controller which analyzes the body-diode conduction information reported by the UCD7138 DTC pin.

The benefits of the chipset include maximizing system efficiency by minimizing body-diode conduction time, robust and fast negative-current protection, and a simple interface.

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Documentación técnica

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Tipo Título Fecha
* Data sheet UCD7138 4-A and 6-A Single-Channel Synchronous-Rectifier Driver With Body-Diode Conduction Sensing and Reporting datasheet (Rev. B) PDF | HTML 13 may 2015
Application note Intelligent LLC SR Control Using C2000 and UCD7138 (Rev. A) PDF | HTML 27 jun 2022
Technical article Power Tips: How GaN devices boost resonant converter efficiency PDF | HTML 25 ago 2016
EVM User's guide Using the UCD3138ALLCEVM150 (Rev. A) 14 ene 2016
Application note Using UCD7138 and UCD3138A for Advanced Synchronous Rectification Control (Rev. B) 23 oct 2015
Technical article Is your power supply smart enough to be cool PDF | HTML 21 may 2015

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

UCD3138ALLCEVM150 — Módulo de evaluación LLC UCD3138A

The UCD3138ALLCEVM150 is an evaluation module (EVM) board, functioning as an LLC resonant half-bridge dc-dc converter and digitally controlled by control card UCD3138ACCEVM149. This EVM is used to evaluate digital power control using UCD3138A in LLC resonant half-bridge dc-dc conversion (...)

Guía del usuario: PDF
Modelo de simulación

UCD7138 PSpice Transient Model

SLVMAT7.ZIP (77 KB) - PSpice Model
Diseños de referencia

PMP23340C2K — Diseño de referencia de módulo de alimentación habilitado para nitruro de galio (GaN) de 1/8 de ladr

Este diseño de referencia muestra cómo un GaN de alto rendimiento puede permitir una alta eficiencia y un factor de forma pequeño para convertidores de bus intermedio.
Test report: PDF
Diseños de referencia

PMP23340UCD — Diseño de referencia habilitado para GaN de 1/8 de ladrillo, 1.1 kW y de 48 V a 12 V que utiliza un

Este diseño de referencia muestra cómo un GaN de alto rendimiento puede permitir una alta eficiencia y un factor de forma pequeño para convertidores de bus intermedio que utilizan un controlador aislado de alimentación digital UCD3138ARJAT.
Test report: PDF
Diseños de referencia

TIDM-1001 — Diseño de referencia de convertidor resonante LLC intercalado y bifásico con MCU de C2000™

Resonant converters are popular DC-DC converters frequently used in server, telecom, automotive, industrial and other power supply applications. Their high performance (efficiency, power density, etc.), improving requirements of the various industry standards, and the ever increasing power density (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

PMP20978 — Diseño de referencia de convertidor resonante de 1 kW de alta eficiencia y densidad de potencia con

El diseño de referencia PMP20978 es un diseño de referencia de convertidor resonante de alta eficiencia, alta densidad de potencia y peso ligero. Convierte una entrada de 390 V a una salida de 48 V/1 kW. La etapa de potencia PMP20978  tiene una densidad de potencia superior a 140 W/in^3. El (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP21309 — Diseño de referencia de convertidor resonante de 24 V/500 W con FET de GaN de alto voltaje

This reference design is a high-frequency resonant converter reference design. The output voltage is regulated to 24 V with input voltage ranges from 380 V to 400 V using a resonant tank with 500 kHz resonant frequency. A 97.9% peak efficiency is achieved with this design using TI’s (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP21842 — Diseño de referencia de convertidor resonante de 12 V/500 W con FET de GaN de alto voltaje

Este diseño de referencia de convertidor resonante de alta frecuencia regula una salida de 12 V de un rango de tensión de entrada de 380 V a 400 V utilizando un tanque resonante con frecuencia de resonancia de 500 kHz. Con este diseño se logra una eficiencia máxima del 96 % (alimentación de (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDA-00512 — Diseño de referencia de LLC resonante de 340 W controlado digitalmente con conversión de potencia de

This design is a LLC resonant half-bridge DC-DC power converter with digital control using 3138ACC32EVM-149 daughter-card. The daughter-card control functions with preloaded firmware providing the required control functions for a LLC resonant half-bridge converter.  The TIDA-00512 (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WSON (DRS) 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

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