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5962-9326102M2A PDF预览

5962-9326102M2A

更新时间： 2024-02-13 17:34:19
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
页数 文件大小 规格书
18页 741K
描述
ADVANCED HIGH-POWER FACTOR PREREGULATOR

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5962-9326102M2A 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：QLCC
包装说明：CERAMIC, LCC-20针数：20
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.79
Is 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：10 V
标称输入电压：18 VJESD-30 代码：S-CQCC-N20
长度：8.89 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：-55 °C最大输出电流：1.5 A
封装主体材料：CERAMIC, METAL-SEALED COFIRED封装代码：QCCN
封装等效代码：LCC20,.35SQ封装形状：SQUARE
封装形式：CHIP CARRIER峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified筛选级别：MIL-STD-883
座面最大高度：2.03 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：BOOST
最大切换频率：120 kHz技术：BIPOLAR
温度等级：MILITARY端子形式：NO LEAD
端子节距：1.27 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：8.89 mm
Base Number Matches：1

5962-9326102M2A 数据手册

 浏览型号5962-9326102M2A的Datasheet PDF文件第6页浏览型号5962-9326102M2A的Datasheet PDF文件第7页浏览型号5962-9326102M2A的Datasheet PDF文件第8页浏览型号5962-9326102M2A的Datasheet PDF文件第10页浏览型号5962-9326102M2A的Datasheet PDF文件第11页浏览型号5962-9326102M2A的Datasheet PDF文件第12页 
UC1854A  
UC2854A, UC2854B  
UC3854A, UC3854B  
www.ti.com  
SLUS329E–MONTH 2003–REVISED JANUARY 2008  
Voltage Amplifier  
The UC3854A/B voltage amplifier design is essentially similar to the UC3854 with two exceptions. The first is  
with the internal connection. The lower voltage reduces the amount of charge on the compensation capacitors,  
which provides improved recovery form large signal events, such as line dropouts, or power interruption. It also  
minimizes the dc current flowing through the feedback. The output of the voltage amplifier is also changed. In  
addition to a 6.0-V temperature compensated clamp, the output short circuit current has been lowered to 2 mA  
typical, and an active pull down has replaced the passive pull down of the UC3854.  
Current Amplifier  
The current amplifier for an average current PFC controller needs a low offset voltage in order to minimize ac line  
current distortion. With this in mind, the UC3854A/B current amplifier has improved the input offset voltage from  
±4 mV to 0 V to ±3 mV. The negative offset of the UC3854A/B assures that the PWM circuit will not drive the  
MOSFET is the current command is zero (both current amplifier inputs zero.) Previous designs required an  
external offset cancellation network to implement this key feature. The bandwidth of the current amplifier has  
been improved as well to 5 MHz typical. While this is not generally an issue at 50 Hz or 60 Hz inputs, it is  
essential for 400 Hz input avionics applications.  
Miscellaneous  
Several other important enhancements have been implemented in the UC3854A/B. AVCC supply voltage clamp at  
20 V allows the controller to be current fed if desired. The lower startup supply current (250 µA typical),  
substantially reduces the power requirements of an offline startup resistor. The 10.5 V/10 V UVLO option  
(UC3854B) enables the controller to be powered off of an auxiliary 12-V supply.  
The VREF GOOD comparator assures that the MOSFET driver output remains low if the supply of the 7.5 V  
reference are not yet up. This improvement eliminates the need for external Schottky diodes on the PKLMT and  
Mult Out pins that some UC3854 designs require. The propagation delay of the disable feature has been  
improved to 300 ns typical. This delay was proportional to the size of the VREF capacitor on the UC3854, and is  
typically several orders of magnitude slower.  
Copyright © 2003–2008, Texas Instruments Incorporated  
Submit Documentation Feedback  
9
Product Folder Link(s): UC1854A UC2854A, UC2854B UC3854A, UC3854B  
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