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參數(shù)資料
| 型號： | LM5045MH |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | ETSSOP-28 |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 610K |
| 代理商： | LM5045MH |
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LM5045
February 24, 2011
Full-Bridge PWM Controller with Integrated MOSFET
Drivers
General Description
The LM5045 PWM controller contains all of the features nec-
essary to implement Full-Bridge topology power converters
using either current mode or voltage mode control. This de-
vice is intended to operate on the primary side of an isolated
dc-dc converter with input voltage up to 100V. This highly in-
tegrated controller-driver provides dual 2A high and low side
gate drivers for the four external brige MOSFETs plus control
signals for the secondary side synchronous rectifier MOS-
FETs. External resistors program the leading and trailing
edge dead-time between the main and synchronous rectifier
control signals. Intelligent startup of the synchronous recti-
fiers allows monotonic turn-on of the power converter even
with pre-bias load conditions. Additional features include cy-
cle-by-cycle current limiting, hiccup mode restart, pro-
grammable soft-start, synchronous 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 Synchronous Rectifier
dead-time Adjustments
■ 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 Full-Bridge Power Converter
30145401
2011 National Semiconductor Corporation
301454
www.national.com
LM5045
Full-Bridge
PWM
Controller
with
Integrated
MOSFET
Drivers
相關PDF資料 |
PDF描述 |
|---|---|
| LM5045SQ | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, QCC28 |
| LM5046SQ | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, QCC28 |
| LM5046MHX | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, PDSO28 |
| LM5067SDX-2 | 2-CHANNEL POWER SUPPLY SUPPORT CKT, DSO10 |
| LM5067SD-2 | 2-CHANNEL POWER SUPPLY SUPPORT CKT, DSO10 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM5045MH/NOPB | 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| LM5045MHX | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Full-Bridge PWM Controller with Integrated MOSFET Drivers |
| LM5045MHX/NOPB | 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| LM5045SQ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Full-Bridge PWM Controller with Integrated MOSFET Drivers |
| LM5045SQ/NOPB | 功能描述:電流型 PWM 控制器 Full-Bridge PWM Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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