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LM5025BSDX PDF预览

LM5025BSDX

更新时间： 2024-11-04 04:20:07
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器开关式稳压器或控制器电源电路开关式控制器
页数 文件大小 规格书
16页 709K
描述
Active Clamp Voltage Mode PWM Controller

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中文翻译

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LM5025BSDX 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：5 X 5 MM, 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：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：100 V
最小输入电压：13 V标称输入电压：48 V
JESD-30 代码：S-XQCC-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：3 A封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：SOLCC16,.2,20
封装形状：SQUARE封装形式：CHIP CARRIER, 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：440 kHz温度等级：AUTOMOTIVE
端子面层：Tin/Lead (Sn/Pb)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：40宽度：5 mm
Base Number Matches：1

LM5025BSDX 数据手册

 浏览型号LM5025BSDX的Datasheet PDF文件第2页浏览型号LM5025BSDX的Datasheet PDF文件第3页浏览型号LM5025BSDX的Datasheet PDF文件第4页浏览型号LM5025BSDX的Datasheet PDF文件第5页浏览型号LM5025BSDX的Datasheet PDF文件第6页浏览型号LM5025BSDX的Datasheet PDF文件第7页 
March 2006  
LM5025B  
Active Clamp Voltage Mode PWM Controller  
The LM5025B includes a high-voltage start-up regulator that  
operates over a wide input range of 13V to 100V. Additional  
features include: Line Under Voltage Lockout (UVLO), soft-  
start, oscillator UP/DOWN sync capability, precision refer-  
ence and thermal shutdown.  
General Description  
The LM5025B is a functional variant of the LM5025 active  
clamp PWM controller. The functional differences of the  
LM5025B are as follows:  
•
The maximum PWM duty cycle is limited to less than  
75% to reduce voltage stress on the power MOSFETs.  
Features  
•
•
•
The CS2 hiccup mode threshold is increased to 0.5V  
The CS2 filter discharge device is disabled  
n Internal start-up bias regulator  
n 3A compound main gate driver  
n Programmable line under-voltage lockout (UVLO) with  
adjustable hysteresis  
The VCC regulator continues to operate when the line  
UVLO is below the threshold of normal operation  
•
•
The VREF regulator is switched off when the line UVLO  
input falls below the operating threshold  
n Voltage mode control with feed-forward  
n Adjustable dual mode over-current protection  
n Programmable overlap or deadtime between the main  
and active clamp outputs  
n Volt x Second maximum duty cycle clamp  
n Programmable soft-start  
n Current sense leading edge blanking  
n Single resistor programmable oscillator  
n Oscillator up / down sync capability  
n Precision 5V reference  
The internal 5kΩ COMP pin pull-up resistor is removed  
The LM5025B PWM controller contains all of the features  
necessary to implement power converters utilizing the Active  
Clamp / Reset technique. With the active clamp technique,  
higher efficiencies and greater power densities can be real-  
ized compared to conventional catch winding or RDC clamp  
/ reset techniques. Two control outputs are provided, the  
main power switch control (OUT_A) and the active clamp  
switch control (OUT_B). The two internal compound gate  
drivers parallel both MOS and Bipolar devices, providing  
superior gate drive characteristics. This controller is de-  
signed for high-speed operation including an oscillator fre-  
quency range up to 1MHz and total PWM and current sense  
propagation delays less than 100ns.  
n Thermal shutdown  
Packages  
n TSSOP-16  
n LLP-16 (5x5 mm) Thermally Enhanced  
Typical Application Circuit  
20141101  
Simplified Active Clamp Forward Power Converter  
© 2006 National Semiconductor Corporation  
DS201411  
www.national.com  
1234567...16

中文翻译

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