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LM5034

更新时间： 2024-09-26 02:58:23
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德州仪器 - TI /
页数 文件大小 规格书
36页 1195K
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High Voltage Dual Interleaved Current Mode Controller with Active Clamp

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LM5034  
www.ti.com  
SNVS347A –FEBRUARY 2005–REVISED APRIL 2013  
LM5034 High Voltage Dual Interleaved Current Mode Controller with Active Clamp  
Check for Samples: LM5034  
1
FEATURES  
APPLICATIONS  
2
•
Two Independent PWM Current Mode  
Controllers  
•
•
•
Telecommunication Power Converters  
Industrial Power Converters  
•
•
•
•
•
Integrated High Voltage Startup Regulator  
Compound 2.5A Main Output Gate Drivers  
Single Resistor Oscillator Setting to 2 MHz  
Synchronizable Oscillator  
+42V Automotive Systems  
DESCRIPTION  
The LM5034 dual current mode PWM controller  
contains all the features needed to control either two  
independent forward/active clamp dc/dc converters or  
a single high current converter comprised of two  
interleaved power stages. The two controller  
channels operate 180° out of phase thereby reducing  
input ripple current. The LM5034 includes a startup  
regulator that operates over a wide input range up to  
100V and compound (bipolar + CMOS) gate drivers  
that provide a robust 2.5A peak sink current. The  
adjustable dead-time of the active clamp gate drivers  
and adjustable maximum PWM duty cycle reduce  
stress on the primary side MOSFET switches.  
Additional features include programmable line under-  
voltage lockout, cycle-by-cycle current limit, hiccup  
mode fault operation with adjustable restart delay,  
PWM slope compensation, soft-start, and a 2 MHz  
capable oscillator with synchronization capability.  
Active Clamp Gate Driver for P-Channel  
MOSFETs  
•
•
•
Adjustable Gate Drive Overlap Time  
Programmable Maximum Duty Cycle  
Maximum Duty Cycle Fold-Back at High Line  
Voltage  
•
Adjustable Timer for Hiccup Mode Current  
Limiting  
•
•
•
Integrated Slope Compensation  
Adjustable Line Under-Voltage Lockout  
Independently Adjustable Soft-Start (Each  
Regulator)  
•
•
Direct Interface with Opto-Coupler Transistor  
Thermal Shutdown  
PACKAGE  
•
TSSOP-20  
Typical Application Circuit  
V
CC  
36V to 75V  
Input  
V
PWR  
3.3V  
VIN  
CS1  
LM5034  
UVLO  
RES  
OUT1  
AC1  
ERROR AMP  
& ISOLATION  
RT  
Sync  
COMP1  
CS2  
DCL  
2.5V  
VCC1  
VCC2  
OUT2  
AC2  
ERROR AMP  
& ISOLATION  
SS2  
SS1  
OVLP  
GND1  
COMP2  
GND2  
Figure 1. Dual Interleaved Regulators with Independent Outputs  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2005–2013, Texas Instruments Incorporated  
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LM5034 替代型号

型号 品牌 替代类型 描述 数据表
UCC28221 TI

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