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TPS40002 - 产品图解：
TPS40002-低输入 (2.25V-5.5V) 600kHz 频率、同步降压控制器，仅用作源控制器
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TI产品 - TPS40002介绍

TPS40002 - 低输入 (2.25V-5.5V) 600kHz 频率、同步降压控制器，仅用作源控制器

TPS40002是TI德州仪器公司的一款控制器（外部开关）产品，TPS40002是低输入 (2.25V-5.5V) 600kHz 频率、同步降压控制器，仅用作源控制器，本站介绍了TPS40002的封装应用图解、特点和优点、功能等，并给出了与TPS40002相关的TI元器件型号供参考。

TPS40002 - 低输入 (2.25V-5.5V) 600kHz 频率、同步降压控制器，仅用作源控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators. These controllers drive an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion. In addition, the device controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses (both conduction and recovery) in the synchronous rectifier with TI’s proprietary Predictive Gate Drive™ technology. The reduction in these losses is significant and increases efficiency. For a given converter power level, smaller FETs can be used, or heat sinking can be reduced or even eliminated.

The current-limit threshold is adjustable with a single resistor connected to the device. The TPS4000x controllers implement a closed-loop soft start function. Startup ramp time is set by a single external capacitor connected to the SS/SD pin. The SS/SD pin is also used for shutdown.

产品特性

  • Operating Input Voltage 2.25 V to 5.5 V
  • Output Voltage as Low as 0.7 V
  • 1% Internal 0.7 V Reference
  • Predictive Gate Drive™ N-Channel MOSFET Drivers for Higher Efficiency
  • Externally Adjustable Soft-Start and Overcurrent Limit
  • Source-Only Current or Source/Sink Current
  • Versions for Starting into VOUT Pre-Bias
  • 10-Lead MSOP PowerPad™ Package for Higher Performance
  • Thermal Shutdown
  • Internal Boostrap Diode
  • Fixed-Frequency, Voltage-Mode Control
    • TPS40000/1/4 300-kHz
    • TPS40002/3/5 600-kHz
  • APPLICATIONS
    • Networking Equipment
    • Telecom Equipment
    • Base Stations
    • Servers
    • DSP Power
    • Power Modules

PowerPAD™ and Predictive Gate Drive™ are trademarks of Texas Instruments Incorporated.

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