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参数资料
| 型号： | LM5046MHX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | TSSOP-28 |
| 文件页数： | 1/32页 |
| 文件大小： | 888K |
| 代理商： | LM5046MHX |
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LM5046
September 8, 2011
Phase-Shifted Full-Bridge PWM Controller with Integrated
MOSFET Drivers
General Description
The LM5046 PWM controller contains all of the features nec-
essary 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 100V.
This highly integrated controller-driver provides dual 2A high
and low side gate drivers for the four external bridge MOS-
FETs, plus control signals for the secondary side syn-
chronous rectifier MOSFETs. External resistors program the
dead-time to enable zero-volt switching of the primary FETs.
Intelligent startup of the synchronous rectifiers allows mono-
tonic turn-on of the power converter even with pre-bias load
conditions. Additional features include cycle-by-cycle current
limiting, hiccup mode restart, programmable soft-start, syn-
chronous rectifier soft-start and a 2 MHz capable oscillator
with synchronization capability and thermal shutdown.
Features
■ 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 Pre-biased Loads
■ Synchronous Rectifiers Disabled in UVLO mode and
Hiccup Mode
■ Two Independent, Programmable Dead-Time
Adjustments to Enable Zero-Volt Switching.
■ Four High Current 2A Bridge Gate Drivers
■ Wide-Bandwidth Opto-coupler Interface
■ Configurable for either Current Mode or Voltage Mode
Control
■ Dual-mode Over-Current Protection
■ Resistor Programmed 2MHz Oscillator
■ Programmable Line UVLO and OVP
Packages
■ eTSSOP-28
■ LLP-28 (5mm x 5mm)
Simplified Phase-Shifted Full-Bridge Power Converter
30147801
2011 National Semiconductor Corporation
301478
www.national.com
LM5046
Phase-Shifted
Full-Bridge
PWM
Controller
with
Integrated
MOSFET
Drivers
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM5046MHX/NOPB | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| LM5046SQ | 制造商:TI 制造商全称:Texas Instruments 功能描述:LM5046 Phase-Shifted Full-Bridge PWM Controller with Integrated MOSFET Drivers |
| LM5046SQ/NOPB | 功能描述:电流型 PWM 控制器 Phase-Shifted Full- Bridge PWM Cntrlr RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| LM5046SQX | 制造商:TI 制造商全称:Texas Instruments 功能描述:LM5046 Phase-Shifted Full-Bridge PWM Controller with Integrated MOSFET Drivers |
| LM5046SQX/NOPB | 功能描述:IC PWM CTRLR FULL BRIDG 28LLP RoHS:是 类别:集成电路 (IC) >> PMIC - AC-DC 转换器，离线开关 系列:PowerWise® 标准包装:1 系列:FPS™ 输出隔离:隔离 频率范围:61kHz ~ 73kHz 输入电压:8 V ~ 26 V 输出电压:650V 功率（瓦特）:12W 工作温度:-40°C ~ 115°C 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-MDIP 包装:Digi-Reel® 其它名称:FSL206MRBNFSDKR |
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