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LM5027MHX PDF预览

LM5027MHX

更新时间: 2024-11-23 05:42:23
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光电二极管
页数 文件大小 规格书
26页 529K
描述
Voltage Mode Active Clamp Controller

LM5027MHX 技术参数

是否Rohs认证:不符合生命周期:Transferred
包装说明:TSSOP-20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.19Is 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:90 V
最小输入电压:13 V标称输入电压:48 V
JESD-30 代码:R-PDSO-G20JESD-609代码:e0
长度:6.5 mm功能数量:1
端子数量:20最高工作温度:125 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:HSSOP封装等效代码:TSSOP20,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, SHRINK PITCH
认证状态:Not Qualified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:GULL WING
端子节距:0.65 mm端子位置:DUAL
宽度:4.4 mmBase Number Matches:1

LM5027MHX 数据手册

 浏览型号LM5027MHX的Datasheet PDF文件第2页浏览型号LM5027MHX的Datasheet PDF文件第3页浏览型号LM5027MHX的Datasheet PDF文件第4页浏览型号LM5027MHX的Datasheet PDF文件第5页浏览型号LM5027MHX的Datasheet PDF文件第6页浏览型号LM5027MHX的Datasheet PDF文件第7页 
August 18, 2009  
LM5027  
Voltage Mode Active Clamp Controller  
General Description  
Features  
The LM5027 pulse-width modulation (PWM) controller con-  
tains all of the features necessary to implement power con-  
verters utilizing the Active Clamp / Reset technique. With the  
active clamp technique, higher efficiencies and greater power  
densities can be realized compared to conventional catch  
winding or RDC clamp / reset techniques. Three control out-  
puts are provided: the main power switch control (OUTA), the  
active clamp switch control (OUTB), and secondary side syn-  
chronous rectifier control (OUTSR). The timing between the  
control outputs is adjustable with external resistors that pro-  
gram internal precision timers. This controller is designed for  
high-speed operation including an oscillator frequency range  
up to 1 MHz and total PWM propagation delays less than 50  
ns. The LM5027 includes a high-voltage startup regulator with  
a maximum input voltage rating of 105V. Additional features  
include Line Under Voltage Lockout (UVLO), separate soft-  
start of main and synchronous rectifier outputs, a timer for  
hiccup mode current limiting, a precision reference, and ther-  
mal shutdown.  
Voltage-Mode control  
Line feed-forward PWM ramp  
Internal 105V rated start-up bias regulator  
Programmable line Under-Voltage Lockout (UVLO) with  
adjustable hysteresis  
Versatile dual mode over-current protection  
Programmable volt-second limiter  
Programmable soft-start  
Programmable synchronous rectifier soft-start and stop  
Precise 500mV over-current comparator  
Current sense leading edge blanking  
Programmable oscillator with 1 MHz maximum frequency  
and synchronization capability  
Precision 5V reference  
Programmable time delays between outputs  
Packages  
eTSSOP-20  
Typical Application Circuit  
30099001  
Simplified Active Clamp Converter  
© 2009 National Semiconductor Corporation  
300990  
www.national.com  

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