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TPS65552A PDF预览

TPS65552A

更新时间: 2024-09-16 21:55:27
品牌 Logo 应用领域
德州仪器 - TI 驱动器闪光灯双极性晶体管
页数 文件大小 规格书
14页 397K
描述
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER

TPS65552A 数据手册

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RGT  
DGQ  
TPS65552A  
www.ti.com  
SLVS567JULY 2005  
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER  
FEATURES  
APPLICATIONS  
Digital Still Cameras (DSC)  
Optical Film Cameras  
Mobile Phones With Camera  
PDAs With Camera  
Highly Integrated Solution to Reduce  
Components  
Integrated 50-V Power Switch,  
R(ON) = 200 mTypical  
Integrated IGBT Driver  
DESCRIPTION  
High Efficiency  
This device offers a complete solution for charging a  
photo flash capacitor from battery input, and sub-  
sequently discharging the capacitor to the xenon  
tube. The device has an integrated power switch,  
IGBT driver, and control logic blocks for charge  
applications. Compared with discreet solutions, the  
device significantly reduces the component count,  
shrinks the solution size, and eases design com-  
plexity. Additional advantages are fast charging time  
and high efficiency due to the optimized PWM control  
algorithm.  
Programmable Peak Current, 0.95 A ~ 1.8 A  
Input Voltage of 1.8 V to 12 V  
Optimized Control Loop for Fast Charge Time  
Sensing All Trigger From Primary Side  
10-Pin MSOP/16-Pin QFN Package  
Protection  
– MAX On Time  
– Over VDS Shutdown  
– Thermal Monitor  
Other provisions of the device includes four options  
for determining  
a
different target voltage,  
programmable peak current, thermal disable monitor,  
input signal for charge enable, flash enable, and an  
output signal for charge completion status.  
D1  
C1  
VOUT  
VA  
T1  
V
5 V  
1:10  
or  
1:11  
or  
1:12  
VCC  
SW  
VBAT  
V
VF  
V
VF  
CHG  
Internal  
ENA  
D
F1  
Q
Q
R1  
Controller  
0 V DS  
XFULL  
or  
D
F2  
U1  
VCC  
U0  
V_FULL  
ENA  
D/A Vonv.  
or  
Max ON  
LOGIC  
U2  
U3  
I_PEAK  
Analog Circuit  
30 m  
PGND  
NC  
I_PEAK1  
I_PEAK2  
or  
TSD  
VCC  
U4  
SW1  
F_ON  
G_IGBT  
5[V] drive IGBT  
Figure 1. Typical Application Circuit  
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.  
PowerPAD is a trademark of Texas Instruments.  
PRODUCT PREVIEW information concerns products in the forma-  
tive 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 © 2005, Texas Instruments Incorporated  
 

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