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參數資料
| 型號： | LM5041 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Cascaded PWM Controller |
| 中文描述： | 級聯PWM控制器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 343K |
| 代理商： | LM5041 |
LM5041
Cascaded PWM Controller
General Description
The LM5041 PWM controller contains all of the features
necessary to implement either current-fed or voltage-fed
push-pull or bridge power converters. These “Cascaded”
topologies are well suited for multiple output and higher
power applications. The LM5041’s four control outputs in-
clude: the buck stage controls (HD and LD) and the push-
pull control outputs (PUSH and PULL). Push-pull outputs are
driven at 50% nominal duty cycle at one half of the switching
frequency of the buck stage and can be configured for either
a guaranteed overlap time (for current-fed applications) or a
guaranteed both-off time (for voltage-fed applications).
Push-pull stage MOSFETs can be driven directly from the
internal gate drivers while the buck stage requires an exter-
nal driver such as the LM5102. The LM5041 includes a
high-voltage start-up regulator that operates over a wide
input range of 15V to 100V. The PWM controller is designed
for high-speed capability including an oscillator frequency
range up to 1 MHz and total propagation delays of less than
100ns. Additional features include: line Under-Voltage Lock-
out (UVLO), soft-start, an error amplifier, precision voltage
reference, and thermal shutdown.
Features
n
Internal Start-up Bias Regulator
n
Programmable Line Under-Voltage Lockout (UVLO) with
Adjustable Hysteresis
n
Current Mode Control
n
Internal Error Amplifier with Reference
n
Dual Mode Over-Current Protection
n
Leading Edge Blanking
n
Programmable Push-Pull Overlap or Dead Time
n
Internal 1.5A Push-Pull Gate Drivers
n
Programmable Soft-start
n
Programmable Oscillator with Sync Capability
n
Precision Reference
n
Thermal Shutdown
Applications
n
Telecommunication Power Converters
n
Industrial Power Converters
n
Multi-Output Power Converters
n
+42V Automotive Systems
Packages
n
TSSOP-16
n
LLP-16 (5x5 mm) Thermally Enhanced
Typical Application Circuit
20074901
Simplified Cascaded Push-Pull Power Converter
August 2003
L
2003 National Semiconductor Corporation
DS200749
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM5041MTC | Cascaded PWM Controller |
| LM5041MTCX | Cascaded PWM Controller |
| LM5041SD | Cascaded PWM Controller |
| LM5041SDX | Cascaded PWM Controller |
| LM5104 | High Voltage Half-Bridge Gate Driver with Adaptive Delay |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM5041A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Cascaded PWM Controller |
| LM5041AMTC | 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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| LM5041AMTC/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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| LM5041AMTC-NOPB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM5041A Cascaded PWM Controller |
| LM5041AMTCX | 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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