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參數資料
| 型號： | LM5045SQX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, QCC28 |
| 封裝： | 5 X 5 MM, LLP-28 |
| 文件頁數： | 1/28頁 |
| 文件大小： | 610K |
| 代理商： | LM5045SQX |
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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
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM5045SQX/NOPB | 功能描述:IC PWM CTRLR FULL BRIDG 28LLP RoHS:是 類別:集成電路 (IC) >> PMIC - AC-DC 轉換器，離線開關 系列:PowerWise® 標準包裝:1 系列:FPS™ 輸出隔離:隔離 頻率范圍:61kHz ~ 73kHz 輸入電壓:8 V ~ 26 V 輸出電壓:650V 功率（瓦特）:12W 工作溫度:-40°C ~ 115°C 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-MDIP 包裝:Digi-Reel® 其它名稱:FSL206MRBNFSDKR |
| LM5046 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Input operating range: 36V to 75V Line UVLO (34V/32V on/off) |
| LM5046_1 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Input operating range: 36V to 75V Line UVLO (34V/32V on/off) |
| LM5046EVAL/NOPB | 功能描述:電源管理IC開發工具 LM5046 Eval Brd RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM5046MH | 制造商:Texas Instruments 功能描述:CTLR, FULL BRIDGE, PWM, 28TSSOP 制造商:Texas Instruments 功能描述:CTLR, FULL BRIDGE, PWM, 28TSSOP; Input Voltage:100V; Supply Voltage Min:12.5V; Supply Voltage Max:30V; Digital IC Case Style:TSSOP; No. of Pins:28; Frequency:2MHz; Operating Temperature Min:-40C; Operating Temperature Max:125C; ;RoHS Compliant: Yes |
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