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AC/DC controllers

LM5046

AKTIV

Phasenverschobener Vollbrückencontroller mit integrierten MOSFET-Treibern

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Datenblatt

LM5046

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Topology Phase-shifted full bridge Control mode Current Features Adjustable switching frequency, Current limiting, Error amplifier, High-voltage startup, Integrated gate drivers, SR logic, Soft start, Soft switching Duty cycle (max) (%) 100
Topology Phase-shifted full bridge Control mode Current Features Adjustable switching frequency, Current limiting, Error amplifier, High-voltage startup, Integrated gate drivers, SR logic, Soft start, Soft switching Duty cycle (max) (%) 100
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4 WQFN (RSG) 28 25 mm² 5 x 5
  • Highest Integration Controller for Small
    Form Factor, High-Density Power Converters
  • High-Voltage Start-Up Regulator
  • Intelligent Sync Rectifier Start-Up Allows
    Linear Turn-on into Prebiased Loads
  • Synchronous Rectifiers Disabled in UVLO Mode
    and Hiccup Mode
  • Two Independent, Programmable Dead-Time
    Adjustments to Enable Zero-Volt Switching
  • Four High-Current 2-A Bridge Gate Drivers
  • Wide-Bandwidth Opto-Coupler Interface
  • Configurable for Either Current Mode or Voltage
    Mode Control
  • Dual-Mode Overcurrent Protection
  • Resistor Programmed 2-MHz Oscillator
  • Programmable Line UVLO and OVP
  • Highest Integration Controller for Small
    Form Factor, High-Density Power Converters
  • High-Voltage Start-Up Regulator
  • Intelligent Sync Rectifier Start-Up Allows
    Linear Turn-on into Prebiased Loads
  • Synchronous Rectifiers Disabled in UVLO Mode
    and Hiccup Mode
  • Two Independent, Programmable Dead-Time
    Adjustments to Enable Zero-Volt Switching
  • Four High-Current 2-A Bridge Gate Drivers
  • Wide-Bandwidth Opto-Coupler Interface
  • Configurable for Either Current Mode or Voltage
    Mode Control
  • Dual-Mode Overcurrent Protection
  • Resistor Programmed 2-MHz Oscillator
  • Programmable Line UVLO and OVP

The LM5046 PWM controller contains all of the features necessary to implement a phase-shifted full-bridge topology power converter using either current mode or voltage mode control. This device is intended to operate on the primary side of an isolated DC-DC converter with input voltage up to 100 V. This highly integrated controller-driver provides dual 2-A high- and low-side gate drivers for the four external bridge MOSFETs, plus control signals for the secondary-side synchronous rectifier MOSFETs. External resistors program the dead-time to enable zero-volt switching of the primary FETs. Intelligent startup of the synchronous rectifiers allows monotonic turnon of the power converter even with prebias load conditions. Additional features include cycle-by-cycle current limiting, hiccup mode restart, programmable soft-start, synchronous rectifier soft-start, and a 2-MHz capable oscillator with synchronization capability and thermal shutdown.

The LM5046 PWM controller contains all of the features necessary to implement a phase-shifted full-bridge topology power converter using either current mode or voltage mode control. This device is intended to operate on the primary side of an isolated DC-DC converter with input voltage up to 100 V. This highly integrated controller-driver provides dual 2-A high- and low-side gate drivers for the four external bridge MOSFETs, plus control signals for the secondary-side synchronous rectifier MOSFETs. External resistors program the dead-time to enable zero-volt switching of the primary FETs. Intelligent startup of the synchronous rectifiers allows monotonic turnon of the power converter even with prebias load conditions. Additional features include cycle-by-cycle current limiting, hiccup mode restart, programmable soft-start, synchronous rectifier soft-start, and a 2-MHz capable oscillator with synchronization capability and thermal shutdown.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM5046 Phase-Shifted Full-Bridge PWM Controller With Integrated MOSFET Drivers datasheet (Rev. H) PDF | HTML 03 Mai 2013
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note AN-2116 SolarMagic ICs in Micro-inverter Applications (Rev. B) 06 Mai 2013
Application note AN-2126 LM5046 Based Eighth Brick Reference Design (Rev. B) 06 Mai 2013
EVM User's guide AN-2115 LM5046 Evaluation Board (Rev. B) 03 Mai 2013
Application note Using a Phase-Shifted Full-Bridge Topology in Small Form Factor Power Converters 31 Aug 2011

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM5046EVAL — Evaluierungsplatine für den LM5046

The LM5046 evaluation board is designed to provide the design engineer with a fully functional power converter based on the phase-shifted full-bridge topology to evaluate the LM5046 PWM controller. The evaluation board is provided in an industry standard quarter brick footprint.

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Simulationsmodell

LM5046 PSPICE Model (Rev. A)

SNVM008A.ZIP (99 KB) - PSpice Model
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Simulationsmodell

LM5046 TINA-TI Transient Reference Design

SNVMAY9.ZIP (90 KB) - TINA-TI Reference Design
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Berechnungstool

SLUC500 — LM5046 Design Calculator

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC controllers
  • LM5046 — Phasenverschobener Vollbrückencontroller mit integrierten MOSFET-Treibern
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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HTSSOP (PWP) 28 Ultra Librarian
WQFN (RSG) 28 Ultra Librarian
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