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UCC28230PWR PDF预览

UCC28230PWR

更新时间： 2024-11-24 04:48:11
品牌 Logo 应用领域
德州仪器 - TI 转换器控制器
页数 文件大小 规格书
7页 249K
描述
Advanced PWM Controller For Bus Converters

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UCC28230PWR 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：TSSOP, TSSOP14,.25针数：14
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：0.89模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：17 V最小输入电压：7 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G14
JESD-609代码：e4长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：14最高工作温度：125 °C
最低工作温度：-55 °C最大输出电流：0.2 A
标称输出电压：3.3 V封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP14,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.2 mm子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：2.5 mA标称供电电压 (Vsup)：12 V
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：1000 kHz温度等级：MILITARY
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

UCC28230PWR 数据手册

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UCC28230  
UCC28231  
www.ti.com  
SLUS814–FEBRUARY 2008  
Advanced PWM Controller For Bus Converters  
1
FEATURES  
DESCRIPTION  
•
Programmable, Load Dependent, Off-Time  
Control  
The UCC28230, UCC28231 PWM bus controllers are  
optimized for use in high efficiency, high power  
density, unregulated intermediate bus converters.  
Topologies include push-pull, half-bridge and  
full-bridge. External drivers, such as 120-V  
high-side/low-side driver UCC27200, can be used  
with this controller.  
•
Frequency Controlled Start Up Allows Small  
Output Inductor, Low Ripple and Constant  
Current Start with Large Output Capacitor  
•
•
Two 0.2-A Push-Pull Outputs Provide Matched  
Control Signals D to External Drivers  
Low cost, small size and highly efficient solutions are  
achieved by innovations such as:  
Two Additional 1- D Outputs for Optimal Use  
of Self-Driven or Control Driven Synchronous  
Rectifiers  
•
Start-up frequency control circuit allowing small  
output inductor and start with large intermediate  
bus capacitance.  
•
•
Unregulated, Fixed Volt-Second or Fixed  
Frequency Modes set by User  
•
Load dependent off-time control set by user.  
Two, 1.5% Overall Accuracy Reference Voltage  
Options: 5-V for UCC28230 and 3.3-V for  
UCC28231  
Additional 1-D control outputs can be used for  
primary winding clamping in self-driven output  
synchronous rectifier applications or as drive signals  
for the control-driven synchronous rectifier.  
•
•
•
Resistor Programmable Switching Frequency  
up to 1 MHz  
Cycle-by-cycle current limit prevents overstresses of  
converter. If the over current condition causes less  
than 80% duty cycle at the output, then after  
programmable time the controller proceeds into  
periodical shutdown and restart hiccup mode.  
Cycle-by-Cycle Current Limit Allows Parallel  
Operation with Droop Based Current Sharing  
Single External Capacitor sets Soft-Start and  
Over Current Hiccup Mode Parameters with  
Restart  
The UCC28230 provides 5 V, and the UCC28231  
provides 3.3-V precision reference voltages with 1.5%  
overall accuracy and 10-mA output current. This  
reference voltage can be used to supply  
housekeeping circuit and/or microcontroller. The  
precision reference voltage can also be used for  
accurate setting of system parameters.  
•
Severe Short Circuit Hiccup with Restart or  
Latch-Off Protection Option by External  
Resistor  
•
•
•
Input Under Voltage Lock Out  
Thermal Shutdown  
Thermally Enhanced 3 mm x 2 mm SON-12  
and TSSOP-14 Package Options  
Other features include under-voltage lockout, thermal  
shutdown, programmable soft-start, over-current  
hiccup mode and short circuit protection with internal  
restart (by default) or latch-off mode by using an  
external resistor.  
APPLICATIONS  
•
Intermediate Bus Isolated Converters  
•
DC-to-DC Transformers  
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.  
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.  
Copyright © 2008, Texas Instruments Incorporated  
1234567

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UCC28230PWR 替代型号

型号 品牌 替代类型 描述 数据表
UCC28230PW TI

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 Advanced PWM Controller for Bus Converters

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