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TPS61196

更新时间： 2024-01-16 23:14:53
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
30页 1948K
描述
6-String 400-mA WLED Driver with Independent PWM Dimming for Each String

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中文翻译

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TPS61196 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HTSSOP, TSSOP28,.25
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：0.73
输入特性：STANDARD接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：R-PDSO-G28JESD-609代码：e4
长度：9.7 mm湿度敏感等级：2
复用显示功能：NO功能数量：1
区段数：120端子数量：28
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP28,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
电源：24 V认证状态：Not Qualified
座面最大高度：1.2 mm子类别：Display Drivers
最大压摆率：2 mA最大供电电压：30 V
最小供电电压：8 V标称供电电压：24 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：0.635 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
最小 fmax：0.022 MHzBase Number Matches：1

TPS61196 数据手册

 浏览型号TPS61196的Datasheet PDF文件第2页浏览型号TPS61196的Datasheet PDF文件第3页浏览型号TPS61196的Datasheet PDF文件第4页浏览型号TPS61196的Datasheet PDF文件第5页浏览型号TPS61196的Datasheet PDF文件第6页浏览型号TPS61196的Datasheet PDF文件第7页 
TPS61196  
www.ti.com  
SLVSBG1C –OCTOBER 2012–REVISED FEBRUARY 2013  
6-String 400-mA WLED Driver with Independent PWM Dimming for Each String  
Check for Samples: TPS61196  
The TPS61196 adjusts the boost controller's output  
1
FEATURES  
voltage automatically to provide only the voltage  
required by the LED string with the largest forward  
voltage drop plus the minimum required voltage at  
that string's IFB pin, thereby optimizing the driver's  
efficiency. Its switching frequency is programmed by  
an external resistor from 100kHz to 800kHz.  
•
•
•
8V to 30V Input Voltage  
Up to 120V Output Voltage  
100KHz to 800kHz Programmable Switching  
Frequency  
•
•
Adaptive Boost Output for LED Voltages  
The TPS61196 supports direct PWM brightness  
dimming. Each string has an independent PWM  
control input. During the PWM dimming, the LED  
current is turned on/off at the frequency and duty  
cycle which are determined by the external PWM  
signal. The PWM frequency ranges from 90Hz to  
22kHz.  
Six Current Sinks, 200mA Continuous Output /  
400mA Pulse Output for Each String  
•
•
±1.5% Current Matching Between Strings  
High Precision PWM Dimming Resolution up  
to 5000:1  
•
•
•
Programmable Over-voltage Threshold at  
Output and Each Current Sink  
The TPS61196 integrates over current protection,  
output short circuit protection, ISET short to ground  
protection, diode open and short protection, LED  
open and short protection, and over temperature  
shutdown circuit. In addition, the TPS61196 can  
detect the IFB pin short to ground to protect the LED  
string. The device also provides programmable input  
under-voltage lockout threshold and output over-  
voltage protection threshold.  
Programmable Under-voltage Threshold at  
Input with Adjustable Hysteresis  
Adjustable Soft Start Time Independent of  
Dimming Duty Cycle  
•
•
•
•
•
•
Built-in LED Open/Short Protection  
Built-in Schottky Diode Open/Short Protection  
Built-in ISET Short Protection  
The TPS61196 has a built-in linear regulator which  
steps down the input voltage to the VDD voltage for  
powering the internal circuitry. An soft start circuit is  
implemented internally to work with an external  
capacitor to adjust the soft startup time to minimize  
the in-rush current during boost converter startup.  
The device is available in 28-pin HTSSOP package  
with powerPAD providing good thermal performance.  
Built-in IFB Short Protection  
Thermal Shutdown  
28L HTSSOP Package with PowerPAD  
APPLICATIONS  
•
•
LCD TV Backlight  
Scan Mode LCD TV Backlight  
SIMPLIFIED SCHEMATIC CIRCUIT  
L1  
DESCRIPTION  
D1  
68mH  
VIN = 24V  
C1  
The TPS61196 provides a highly integrated solution  
for LCD TV backlight with an independent PWM  
dimming function for each string. This device is a  
current mode boost controller driving up to six WLED  
strings with multiple LEDs in series. Each string has  
an independent current regulator providing a LED  
current adjustable from 50mA to 400mA within ±1.5%  
matching accuracy. The minimal voltage at the  
current sink is programmable in the range of 0.3V to  
1.0V to fit with different LED current settings. The  
input voltage range for TPS61196 is from 8V to 30V.  
EC1  
100mF  
EC2  
10mF  
100mF  
R19  
3
VIN  
R3  
Q1  
GDRV  
R5  
C2  
2.2mF  
255k  
200k  
ISNS  
R6  
200  
R4  
C4  
10nF  
R1  
182k  
R7  
0.1  
10k  
UVLO  
VDD  
PGND  
C5  
470pF  
TPS61196  
R2  
24.9k  
OVP  
COMP  
FSW  
C3  
1.0mF  
C8  
160pF  
R8  
150k  
REF  
R9  
200k  
C6  
47nF  
C7  
EN  
2.2mF  
FAULT  
IFB1  
IFB2  
IFB3  
IFB4  
IFB5  
IFB6  
PWM1  
PWM2  
PWM3  
PWM4  
PWM5  
PWM6  
IFBV  
FBP  
ISET  
C9  
R10  
60.4k  
0.1mF  
R12  
196k  
R11  
37.4k  
R13 R14 R15 R16 R17 R18  
10M 10M 10M 10M 10M 10M  
Thermal pad  
AGND  
Figure 1. Typical Application of TPS61196  
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.  
Copyright © 2012–2013, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
 
 
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中文翻译

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TPS61196 替代型号

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