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TLS1242N PDF预览

TLS1242N

更新时间： 2024-11-24 12:22:35
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器功率因数校正光电二极管
页数 文件大小 规格书
13页 243K
描述
CURRENT-MODE PWM CONTROLLER WITH POWER-FACTOR CORRECTOR

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中文翻译

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TLS1242N 技术参数

是否无铅： 含铅生命周期：Obsolete
零件包装代码：DIP包装说明：DIP,
针数：20Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84Is Samacsys：N
模拟集成电路 - 其他类型：POWER FACTOR CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：20 V
最小输入电压：12 V标称输入电压：15 V
JESD-30 代码：R-PDIP-T20长度：24.325 mm
功能数量：1端子数量：20
最高工作温度：70 °C最低工作温度：
最大输出电流：0.01 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装形状：RECTANGULAR
封装形式：IN-LINE认证状态：Not Qualified
座面最大高度：5.08 mm表面贴装：NO
切换器配置：PUSH-PULL最大切换频率：53 kHz
温度等级：COMMERCIAL端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
宽度：7.62 mmBase Number Matches：1

TLS1242N 数据手册

 浏览型号TLS1242N的Datasheet PDF文件第2页浏览型号TLS1242N的Datasheet PDF文件第3页浏览型号TLS1242N的Datasheet PDF文件第4页浏览型号TLS1242N的Datasheet PDF文件第5页浏览型号TLS1242N的Datasheet PDF文件第6页浏览型号TLS1242N的Datasheet PDF文件第7页 
TLS1242, TLS1244  
CURRENT-MODE PWM CONTROLLER  
WITH POWER-FACTOR CORRECTOR  
SLVS161 – MAY 1997  
N OR DW PACKAGE  
(TOP VIEW)  
Single-Chip Solution for High-Power-Factor  
Switching Power Supply  
Current-Mode PWM Controller  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
COMP  
FB  
REF  
Fixed-Frequency Average-Current  
Power-Factor Corrector (PFC)  
Synchronized with PWM Controller  
V
CC  
ISENS1  
CT  
OUT1  
PGND  
OUT2  
PKLIM  
IAC  
Full Range ac Operation  
RT  
Low Start-Up Current  
GND  
ISENS2  
CAO  
Pulse-by-Pulse Current Limiting for PFC  
Undervoltage Lockout with Hysteresis  
Internally Trimmed Bandgap Reference  
External Synchronous Pin  
RMS  
MULT  
SYNC  
AO  
VSENSE  
Overvoltage Protection for PFC  
Upper 8 Pins Configuration Same as  
UC3842  
description  
The TLS1242 and TLS1244 are designed as optimal high-power-factor switching power supply systems with  
minimum external components. The current-mode PWM controller and the fixed-frequency average-current  
power-factor corrector (PFC) of each device are combined into a 20-pin DIP package. Internally implemented  
circuits include: undervoltage lockout (UVLO), featuring a low start-up current; a precision reference that can  
be trimmed for accuracy at the error amplifier input; a multiplier; two PWM comparators; overvoltage protection  
(OVP); and two totem-pole output stages designed to source or sink current. The output stage is suitable for  
driving n-channel MOSFETs, and is low when in the off state.  
The fixed-frequency average-current-mode power-factor-correction controller circuit is synchronized with a  
current-mode PWM controller internally. Fixed-frequency power-factor correction helps prevent problems in  
frequency-sensitive applications such as video monitor, telecom, RF transmitters, and medical imaging. The  
synchronization of the PFC with the PWM controller helps reduce EMI problems as well.  
The pin assignment of both the TLS1242 and the TLS1244 is intended to accommodate the UC3842/3844 as  
well, if PFC is not required in the application. The upper pins (1, 2, 3, 4, 17, 18, 19 and 20) have the same pin  
assignment as the UC3842, making the current-mode SPS application more flexible.  
The PWM portion of the TLS1242 can operate to duty cycle approaching 100%. A duty cycle range of 0 to 50%  
is obtained using the TLS1244.  
The TLS1242 and TLS1244 are characterized for operation from 0°C to 70°C.  
Copyright 1997, Texas Instruments Incorporated  
PRODUCT PREVIEW information concerns products in the formative or  
design phase of development. Characteristic data and other  
specifications are design goals. Texas Instruments reserves the right to  
change or discontinue these products without notice.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443  
1234567...13

中文翻译

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