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TPS43330-Q1 PDF预览

TPS43330-Q1

更新时间： 2024-11-06 08:39:03
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
35页 1996K
描述
LOW IQ, SINGLE BOOST, DUAL SYNCHRONOUS BUCK CONTROLLER

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TPS43330-Q1 数据手册

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TPS43330-Q1  
TPS43332-Q1  
www.ti.com  
SLVSA82A –MARCH 2011–REVISED NOVEMBER 2011  
LOW IQ, SINGLE BOOST, DUAL SYNCHRONOUS BUCK  
CONTROLLER  
Check for Samples: TPS43330-Q1, TPS43332-Q1  
1
FEATURES  
•
•
•
Two Synchronous Buck Controllers  
•
•
Sense Resistor or Inductor DCR Sensing  
One Pre-Boost Controller  
Out of Phase Switching between Buck  
Channels  
Input Range up to 40V, (Transients up to 60V),  
Operation Down to 2V when Boost is Enabled  
•
•
Peak Gate Drive Current 1.5 A  
•
Low Power Mode IQ: 30µA (one Buck on), 35µA  
(Two Bucks on)  
Thermally Enhanced Package – 38-Pin  
HTSSOP (DAP) with PowerPadTM  
•
•
•
•
Low Shutdown Current Ish < 4 µA  
Buck Output Range 0.9V to 11V  
Boost Output Selectable: 7V/10V/11V  
•
Qualified for Automotive Applications  
APPLICATIONS  
•
Automotive Start-Stop, Infotainment,  
Navigation Instrument Cluster Systems  
Programmable frequency and External  
Synchronization Range 150kHz to 600kHz  
•
Industrial/Automotive Multi-Rail DC Power  
Distribution Systems & Electronic Control  
Units  
•
•
•
Separate Enable Inputs (ENA, ENB)  
Frequency Spread Spectrum (TPS43332)  
Selectable Forced Continuous Mode or  
Automatic Low Power Mode at Light Loads  
DESCRIPTION  
The TPS43330-Q1/TPS43332-Q1 includes two current mode synchronous buck controllers and a voltage mode  
boost controller. The part is ideally suited as pre-regulator stage with low Iq requirements and systems that need  
to survive supply drops due to cranking events. The integrated boost controller allows the device to operate down  
to 2V at the input without seeing a drop on the Buck regulator output stages. At light loads, the buck controllers  
can be enabled to operate automatically in Low Power Mode consuming just 30µA of quiescent current.  
The buck controllers have independent soft start capability and power good indicators. External MOSFET  
protection is provided by current fold back in the buck controllers and cycle-by-cycle current limitation in the  
boost controller. The switching frequency can be programmed over 150 kHz to 600 kHz or synchronized to an  
external clock in the same range. Additionally, the TPS43332-Q offers frequency-hopping spread spectrum  
operation.  
VBAT  
VBuckA  
TPS43330/2  
VBuckB  
2 V  
Figure 1. Typical Application Diagram  
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 © 2011, 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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