LM5046

現行

具整合式 MOSFET 驅動器的相位偏移全橋 PWM 控制器

產品詳細資料

Vin (max) (V) 14 Operating temperature range (°C) -40 to 125 Control mode Current Topology Phase-shifted full bridge Rating Catalog Features Adjustable switching frequency, Current limiting, Error amplifier, High-voltage startup, Integrated gate drivers, SR logic, Soft start, Soft switching Duty cycle (max) (%) 100
Vin (max) (V) 14 Operating temperature range (°C) -40 to 125 Control mode Current Topology Phase-shifted full bridge Rating Catalog 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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類型 標題 日期
* Data sheet LM5046 Phase-Shifted Full-Bridge PWM Controller With Integrated MOSFET Drivers datasheet (Rev. H) PDF | HTML 2013年 5月 3日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note AN-2116 SolarMagic ICs in Micro-inverter Applications (Rev. B) 2013年 5月 6日
Application note AN-2126 LM5046 Based Eighth Brick Reference Design (Rev. B) 2013年 5月 6日
User guide AN-2115 LM5046 Evaluation Board (Rev. B) 2013年 5月 3日
Application note Using a Phase-Shifted Full-Bridge Topology in Small Form Factor Power Converters 2011年 8月 31日

設計與開發

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開發板

LM5046EVAL — 適用於 LM5046 的評估板

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.

使用指南: PDF
TI.com 無法提供
模擬型號

LM5046 PSPICE Model (Rev. A)

SNVM008A.ZIP (99 KB) - PSpice Model
模擬型號

LM5046 TINA-TI Transient Reference Design

SNVMAY9.ZIP (90 KB) - TINA-TI Reference Design
計算工具

SLUC500 LM5046 Design Calculator

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支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
LM5046 具整合式 MOSFET 驅動器的相位偏移全橋 PWM 控制器
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTSSOP (PWP) 28 Ultra Librarian
WQFN (RSG) 28 Ultra Librarian

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  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
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  • 組裝地點

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