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參數資料
| 型號： | LM5046SQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)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： | 1/32頁 |
| 文件大?。?/td> | 888K |
| 代理商： | LM5046SQ |
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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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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM5046SQ/NOPB | 功能描述:電流型 PWM 控制器 Phase-Shifted 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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| LM5046SQX | 制造商:TI 制造商全稱: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 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 |
| LM505 | 制造商:LM TECHNOLOGIES 功能描述:ADAPTER BLUETOOTH NANO EDR 40M USB 制造商:LM TECHNOLOGIES 功能描述:BLUETOOTH ADAPTER, USB, BCM2045, EDR 制造商:LM TECHNOLOGIES 功能描述:BLUETOOTH ADAPTER, USB, BCM2045, 40M, EDR; Data Rate:2.166Mbps; Operating Temperature Min:-20C; Operating Temperature Max:75C; Operating Frequency Range:2.402GHz to 2.48GHz; Operating Temperature Range:-20C to +75C ;RoHS Compliant: Yes |
| LM5050-1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:High Side OR-ing FET Controller |
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