Inicio Gestión de la energía AC/DC & DC/DC controllers (external FET)
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Gestión de la energía
AC/DC & DC/DC controllers (external FET)

LM5122

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Controlador elevador síncrono con modo de corriente de Vin amplia de 3 V-65 V y capacidad multifásic

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LM5122

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Detalles del producto

Vin (min) (V) 3 Vin (max) (V) 65 Iout (max) (A) 20 Operating temperature range (°C) -40 to 125 Control mode current mode Topology Boost, Flyback, Forward, SEPIC Rating Catalog Vout (min) (V) 3 Vout (max) (V) 100 Iq (typ) (A) 0.004 Duty cycle (max) (%) 100
Vin (min) (V) 3 Vin (max) (V) 65 Iout (max) (A) 20 Operating temperature range (°C) -40 to 125 Control mode current mode Topology Boost, Flyback, Forward, SEPIC Rating Catalog Vout (min) (V) 3 Vout (max) (V) 100 Iq (typ) (A) 0.004 Duty cycle (max) (%) 100
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4 HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • Maximum Input Voltage: 65 V
  • Minimum Input Voltage: 3 V (4.5 V for Start-Up)
  • Output Voltage up to 100 V
  • Bypass (VOUT = VIN) Operation
  • 1.2-V Reference with ±1% Accuracy
  • Free-Run and Synchronizable Switching to 1 MHz
  • Peak-Current-Mode Control
  • Robust 3-A Integrated Gate Drivers
  • Adaptive Dead-Time Control
  • Optional Diode-Emulation Mode
  • Programmable Cycle-by-Cycle Current Limit
  • Hiccup-Mode Overload Protection
  • Programmable Line UVLO
  • Programmable Soft Start
  • Thermal Shutdown Protection
  • Low Shutdown Quiescent Current: 9 µA
  • Programmable Slope Compensation
  • Programmable Skip-Cycle Mode Reduces Standby Power
  • Allows External VCC Supply
  • Inductor DCR Current Sensing Capability
  • Multi-phase Capability
  • Thermally Enhanced 20 or 24-Pin HTSSOP
  • Create a Custom Design Using the LM5122 With the WEBENCH® Power Designer
  • Maximum Input Voltage: 65 V
  • Minimum Input Voltage: 3 V (4.5 V for Start-Up)
  • Output Voltage up to 100 V
  • Bypass (VOUT = VIN) Operation
  • 1.2-V Reference with ±1% Accuracy
  • Free-Run and Synchronizable Switching to 1 MHz
  • Peak-Current-Mode Control
  • Robust 3-A Integrated Gate Drivers
  • Adaptive Dead-Time Control
  • Optional Diode-Emulation Mode
  • Programmable Cycle-by-Cycle Current Limit
  • Hiccup-Mode Overload Protection
  • Programmable Line UVLO
  • Programmable Soft Start
  • Thermal Shutdown Protection
  • Low Shutdown Quiescent Current: 9 µA
  • Programmable Slope Compensation
  • Programmable Skip-Cycle Mode Reduces Standby Power
  • Allows External VCC Supply
  • Inductor DCR Current Sensing Capability
  • Multi-phase Capability
  • Thermally Enhanced 20 or 24-Pin HTSSOP
  • Create a Custom Design Using the LM5122 With the WEBENCH® Power Designer

The LM5122 is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.

The LM5122 is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.
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Documentación técnica

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Tipo Título Fecha
* Data sheet LM5122 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. H) PDF | HTML 09 jun 2017
Technical article How to add overvoltage protection to a synchronous boost controller PDF | HTML 17 sep 2018
White paper An overview of radiated EMI specifications for power supplies 05 jun 2018
White paper An overview of conducted EMI specifications for power supplies 01 feb 2018
Application brief Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout 13 nov 2017
Analog Design Journal Designing the front-end DC/DC conversion stage to withstand automotive transient 18 ene 2017
User guide PMLK Boost Experiment Book (Rev. A) 31 ago 2016
White paper Under the Hood of a Multiphase Synchronous Rectified Boost Converter 02 oct 2015
White paper Under the Hood of a Multiphase Synchronous Rectified Boost Converter (PPT) 02 oct 2015
Technical article Power Tips: Synchronize your SEPIC PDF | HTML 29 abr 2015
White paper How to design boost, SEPIC or flyback regulators with wide VIN power ICs 29 jul 2014
Application note Automated Frequency Response Analyzer 09 oct 2013
White paper Wide VIN power management ICs simplify white paper (Rev. A) 19 sep 2013
EVM User's guide LM5122EVM-1PH User's Guide 22 abr 2013
EVM User's guide LM5122EVM-2PH User's Guide 22 abr 2013

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

LM5122EVM-1PH — Módulo de evaluación LM5122EVM-1PH de controlador elevador síncrono de Vin amplia

The LM5122EVM-1PH evaluation module (EVM) provides the design engineer with a fully functional synchronous boost converter to evaluate the Texas Instruments LM5122 synchronous boost controller IC. The EVM provides 24V output at up to 4.5A current from a 9V to 20V input. The EVM is designed to (...)
Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

LM5122EVM-2PH — Módulo de evaluación LM5122EVM-2PH de controlador elevador síncrono de Vin amplia

The LM5122EVM-2PH evaluation module (EVM) provides the design engineer with a fully functional dual phase synchronous boost converter to evaluate the Texas Instruments LM5122 synchronous boost controller IC. The EVM provides 28V output at up to 7A current from a 9V to 20V input. The EVM is (...)
Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

PMLKBOOSTEVM — Placa de experimentación TI-PMLK Boost con TPS55340 y LM5122

The TI-PMLK Boost Experiment Board is part of the TI Power Management Lab Kit (TI-PMLK) series. TI-PMLK series provides hands on learning to reinforce power supply knowledge. The modular format allows users to customize the TI-PMLK series experience in a way that makes the most impact on (...)

Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LM5122 Dual-Phase TINA-TI Transient Reference Design

SNVMAV2.TSC (729 KB) - TINA-TI Reference Design
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Modelo de simulación

LM5122 TINA-TI Transient Reference Design (Rev. B)

SNVM495B.TSC (188 KB) - TINA-TI Reference Design
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Modelo de simulación

LM5122 TINA-TI Transient Spice Model (Rev. B)

SNVM494B.ZIP (52 KB) - TINA-TI Spice Model
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Modelo de simulación

LM5122 Unencrypted PSpice Average Model Package (Rev. A)

SNVMBC0A.ZIP (78 KB) - PSpice Model
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Modelo de simulación

LM5122-Q1 PSpice Model (Rev. B)

SNVM416B.ZIP (56 KB) - PSpice Model
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Pedidos y calidad

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  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
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  • Lugar de fabricación
  • Lugar de ensamblaje

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