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LM5041B

更新时间： 2024-02-16 17:11:33
品牌 Logo 应用领域
美国国家半导体 - NSC 控制器
页数 文件大小 规格书
16页 422K
描述
Cascaded PWM Controller

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中文翻译

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LM5041B 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：LLP-16Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.13Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：90 V
最小输入电压：15 V标称输入电压：48 V
JESD-30 代码：S-PDSO-N16JESD-609代码：e0
长度：5 mm湿度敏感等级：1
功能数量：1端子数量：16
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.01 A封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：SOLCC16,.2,20
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：1000 kHz温度等级：AUTOMOTIVE
端子面层：Tin/Lead (Sn/Pb)端子形式：NO LEAD
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：5 mm
Base Number Matches：1

LM5041B 数据手册

 浏览型号LM5041B的Datasheet PDF文件第2页浏览型号LM5041B的Datasheet PDF文件第3页浏览型号LM5041B的Datasheet PDF文件第4页浏览型号LM5041B的Datasheet PDF文件第5页浏览型号LM5041B的Datasheet PDF文件第6页浏览型号LM5041B的Datasheet PDF文件第7页 
May 1, 2009  
LM5041B  
Cascaded PWM Controller  
General Description  
Features  
The LM5041B 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 LM5041B includes these four control out-  
puts: the buck stage controls (HD and LD) and the push-pull  
control outputs (PUSH and PULL). Push-pull outputs are driv-  
en 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 non-overlap time (for voltage-fed applications).  
Push-pull stage MOSFETs can be driven directly from the in-  
ternal gate drivers while the buck stage requires an external  
driver such as the LM5102. The LM5041B 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 100 ns.  
Additional features include line Under-Voltage Lock-Out  
(UVLO), Soft-Start, an error amplifier, precision voltage ref-  
erence, and thermal shutdown.  
Internal Start-up Bias Regulator  
■
■
Programmable Line Under-Voltage Lockout (UVLO) with  
Adjustable Hysteresis  
Current Mode Control  
■
■
■
■
■
■
■
■
■
■
Internal Error Amplifier with Reference  
Cycle-by-cycle Over-Current Protection  
Leading Edge Blanking  
Programmable Push-Pull Overlap or Dead Time  
Internal 1.5A Push-Pull Gate Drivers  
Programmable Soft-Start  
Programmable Oscillator with Sync Capability  
Precision Reference  
Thermal Shutdown  
Applications  
Telecommunication Power Converters  
■
■
■
Industrial Power Converters  
Multi-Output Power Converters  
The differences between LM5041, LM5041A and LM5041B  
are as follows: In the LM5041A and the LM5041B version, the  
hiccup mode over-current protection is not employed and the  
VCC bias regulator is not disabled by a low state at the SS  
pin. In the LM5041B version, both the high and low side buck  
stage gate drivers are forced to a low state when the controller  
is disabled. In the LM5041 and the LM5041B version, the  
buck stage controller is disabled by either a low state at the  
UVLO pin or a low state at the SS pin. Also in the LM5041B  
version, the REF pin 5V regulator is not disabled by a UVLO  
pin low state.  
Packages  
TSSOP-16  
■
LLP-16 (5x5 mm) Thermally Enhanced  
■
Typical Application Circuit  
30086401  
Simplified Cascaded Push-Pull Power Converter  
© 2009 National Semiconductor Corporation  
300864  
www.national.com  
1234567...16

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