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TPS5130-Q1

更新时间： 2024-02-04 22:27:57
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
31页 564K
描述
TRIPLE SYNCHRONOUS BUCK CONTROLLER WITH NMOS LDO CONTROLLER

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TPS5130-Q1 数据手册

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TPS5130-Q1  
www.ti.com................................................................................................................................................................................................... SLVS866–MARCH 2009  
TRIPLE SYNCHRONOUS BUCK CONTROLLER WITH NMOS LDO CONTROLLER  
1
FEATURES  
•
Qualified for Automotive Applications  
•
•
High-Speed Error Amplifier  
•
Three Independent Step-Down DC/DC  
Controllers and One LDO Controller  
Overcurrent Protection With Temperature  
Compensation Circuit for Each Channel  
•
•
Input Voltage Range  
•
•
•
Overvoltage and Undervoltage Protection  
Programmable Short-Circuit Protection  
–
–
Switcher: 4.5 V to 28 V  
LDO: 1.1 V to 3.6 V  
Power Good Output (PGOUT) With  
Programmable Delay Time  
Output Voltage Range  
•
5-V and 3.3-V Linear Regulators  
–
–
Switcher: 0.9 V to 8.5 V  
LDO: 0.9 V to 2.5 V  
APPLICATIONS  
•
•
•
•
Synchronous for High Efficiency  
Precision Vref (±1.5%)  
•
•
•
Notebook PCs, PDAs  
Consumer Game Systems  
DSP Applications  
PWM Mode Control : 500-kHz Operation (Max)  
Auto PWM/SKIP Mode Available  
DESCRIPTION  
The TPS5130 is composed of three independent synchronous buck regulator controllers (SBRC) and one low  
dropout (LDO) regulator controller. On-chip high-side and low-side synchronous rectifier drivers are integrated to  
drive less expensive N-channel MOSFETs. The LDO controller can also drive an external N-channel MOSFET.  
Because the input current ripple is minimized by operating 180° out of phase, it allows a smaller input  
capacitance, resulting in reduced power supply cost. The SBRC of the TPS5130 automatically adjusts from PWM  
mode to SKIP mode to maintain high efficiency under light-load conditions. Resistorless current protection for the  
synchronous buck controller and the fixed high-side driver voltage simplifies the system design and reduces the  
external parts count. The LDO controller has a current-limit protection and overshoot protection to suppress  
output voltage spikes at load transient. To further extend battery life, the TPS5130 features dead-time control  
and very low quiescent current.  
VIN  
VIN  
OUT3_u  
LL3  
OUT1_u  
LL1  
Vo3  
8.5 V  
(see Note B)  
Vo1  
8.5 V  
(see Note B)  
OUT3_d  
OUT1_d  
TPS5130  
INV3  
INV1  
REG5V_IN  
LDO_IN  
OUT2_u  
LL2  
LDO_CUR  
Vo2  
8.5 V  
(see Note B)  
LDO_GATE  
INV_LDO  
OUT2_d  
Vo_LDO  
INV2  
GND  
A. See the Application Information section for more details.  
B. To determine input voltage, see Duty Control in Electrical Characteristics.  
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 © 2009, Texas Instruments Incorporated  
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