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UCC25600_1 PDF预览

UCC25600_1

更新时间: 2024-11-08 05:52:59
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
23页 565K
描述
8-Pin High-Performance Resonant Mode Controller

UCC25600_1 数据手册

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UCC25600  
www.ti.com ............................................................................................................................................. SLUS846ASEPTEMBER 2008REVISED MARCH 2009  
8-Pin High-Performance Resonant Mode Controller  
1
FEATURES  
DESCRIPTION  
Variable Switching Frequency Control  
Programmable Minimum Switching Frequency  
With 4% Accuracy (3% accuracy at  
temperature range: -20°C to 105°C)  
The UCC25600 high performance resonant mode  
controller is designed for dc-to-dc applications  
utilizing resonant topologies, especially the LLC half  
bridge resonant converter. This highly integrated  
controller implements frequency modulation control  
and complete system functions in only an 8-pin  
package. Switching to the UCC25600 will greatly  
simplify the system design, layout and improve time  
to market, all at a price point lower than competitive  
16-pin device offerings.  
Programmable Maximum Switching Frequency  
Programmable Dead Time for Best Efficiency  
Programmable Soft-Start Time  
Easy ON/OFF Control  
Over-Current Protection  
Over-Temperature Protection  
The internal oscillator supports the switching  
frequencies from 30 kHz to 350 kHz. This high  
accuracy oscillator realizes the minimum switching  
frequency limiting with 4% tolerance, allowing the  
designer to avoid "over design" of the power stage  
and, thus, further reducing overall system cost. The  
programmable dead time enables zero-voltage  
switching with minimum magnetizing current. This will  
maximize system efficiency across a variety of  
applications. The programmable soft-start timer  
maximizes design flexibility demanded by the varied  
requirements of end equipments utilizing a half bridge  
topology. By incorporating 0.4-A source and 0.8-A  
sink driving capability, a low cost, reliable gate driver  
transformer is a real option.  
Bias Voltage UVLO and OVP  
Integrated Gate Driver With 0.4-A Source and  
0.8-A Sink Capability  
Operating Temperature Range: –40°C to 125°C  
SOIC 8-Pin Package  
APPLICATIONS  
100-W to 1-kW Power Supplies  
LCD, Plasma and DLP TVs  
Adaptors, Computing and ATX Power Supplies  
Home Audio Systems  
Electronic Lighting Ballasts  
The UCC25600 delivers complete system protection  
functions including over current, UVLO, bias supply  
OVP and over temperature protection.  
TYPICAL APPLICATION DIAGRAM  
*
*
*
Vs  
8
3
2
1
4
GD1  
OC  
RT  
DT  
SS  
5
GD2  
UCC25600  
7
6
VCC  
GND  
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.  
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 © 2008–2009, Texas Instruments Incorporated  

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