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TEA1755LT/1Y PDF预览

TEA1755LT/1Y

更新时间: 2024-11-15 21:10:51
品牌 Logo 应用领域
恩智浦 - NXP 功率因数校正光电二极管
页数 文件大小 规格书
35页 919K
描述
TEA1755LT - HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller SOP 16-Pin

TEA1755LT/1Y 技术参数

是否Rohs认证: 符合生命周期:Active
零件包装代码:SOP包装说明:SOP, SOP16,.25
针数:16Reach Compliance Code:compliant
风险等级:1.74控制模式:CURRENT-MODE
JESD-30 代码:R-PDSO-G16湿度敏感等级:3
端子数量:16封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
认证状态:Not Qualified子类别:Switching Regulator or Controllers
表面贴装:YES最大切换频率:159 kHz
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUALBase Number Matches:1

TEA1755LT/1Y 数据手册

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TEA1755LT  
HV start-up DCM/QR flyback controller with integrated  
DCM/QR PFC controller  
Rev. 1 — 25 October 2012  
Product data sheet  
1. General description  
The GreenChip is the latest generation of green Switched Mode Power Supply (SMPS)  
controller ICs. The TEA1755LT combines a controller for Power Factor Correction (PFC)  
and a flyback controller. Its high level of integration enables cost-effective power supply  
design using a very low number of external components.  
The PFC operates in Quasi-Resonant (QR) or Discontinuous Conduction Mode (DCM),  
with valley switching.  
The specially built-in green functions provide high efficiency at all power levels. At high  
power levels the flyback operates in QR mode or DCM with valley detection. At medium  
power levels, the flyback controller switches to Frequency Reduction (FR) mode and limits  
the peak current to an adjustable minimum value. In low power mode, the PFC switches  
off to maintain high efficiency. At very low power levels, when the flyback switching  
frequency drops below 25 kHz, the flyback converter switches to burst mode. During the  
non-switching phase of burst mode, the internal IC supply current is minimized to further  
optimize efficiency. Valley switching is used in all operating modes.  
The advanced burst mode ensures high efficiency at low power and good standby power  
performance while minimizing audible transformer noise.  
The TEA1755LT is a Multi-Chip Module, (MCM), containing two chips. The proprietary  
high-voltage BCD800 process makes direct start-up possible from the rectified universal  
mains voltage in an effective and green way. The second low voltage Silicon-On-Insulator  
(SOI) is used for accurate, high-speed protection functions and control.  
The TEA1755LT enables easy design of highly efficient and reliable supplies up to 250 W.  
These power supply designs are cost-effective, requiring the minimum number of external  
components.  
Remark: All values in this document are typical values unless otherwise stated.  
 

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SWITCHING CONTROLLER, PDSO14, 3.90 MM, PLASTIC, MS-012, SOT-108-1, SOP-14