TPS54231 具有 Eco-mode™ 的 3.5 至 28V 输入、2A、570kHz 降压转换器 | 德州仪器 TI.com.cn

TPS54231 (正在供货)

具有 Eco-mode™ 的 3.5 至 28V 输入、2A、570kHz 降压转换器

具有 Eco-mode™ 的 3.5 至 28V 输入、2A、570kHz 降压转换器 - TPS54231
数据表
 

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  • TPS54233  -  Looking for a device with lower switching frequency? Try the TPS54233.

描述

The TPS54231 device is a 2-V, 2-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.

特性

  • 3.5- to 28-V Input Voltage Range
  • Adjustable Output Voltage Down to 0.8 V
  • Integrated 80-mΩ High-Side MOSFET
    Supports up to 2 A Continuous Output
    Current
  • High Efficiency at Light Loads with a
    Pulse Skipping Eco-mode™
  • Fixed 570-kHz Switching Frequency
  • Typical 1-µA Shutdown Quiescent
    Current
  • Adjustable Slow-Start Limits Inrush
    Currents
  • Programmable UVLO Threshold
  • Overvoltage Transient Protection
  • Cycle-by-Cycle Current Limit, Frequency
    Fold Back and Thermal Shutdown Protection
  • Available in Easy-to-Use SOIC8 Package
  • Supported by WEBENCH® Software Tool
    (www.TI.com/WEBENCH)
  • APPLICATIONS
    • Consumer Applications such as Set-Top Boxes,
      CPE Equipment, LCD Displays, Peripherals, and
      Battery Chargers
    • Industrial and Car Audio Power Supplies
    • 5-V, 12-V and 24-V Distributed Power Systems

WEBENCH Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners

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参数 与其它产品相比 降压转换器(集成开关)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
Type
TPS54231 TPS54232 TPS54233 TPS54331 TPS54336A TPS54531
3.5     3.5     3.5     3.5     4.5     3.5    
28     28     28     28     28     28    
0.8     0.8     0.8     0.8     0.8     0.8    
25     25     25     25     25     25    
2     2     2     3     3     5    
1     1     1     1     1     1    
570     1000     300     570     340     570    
570     1000     300     570     340     570    
0.075     0.085     0.075     0.11     0.6     0.11    
Enable
Light Load Efficiency
UVLO Adjustable    
Enable
Light Load Efficiency
UVLO Adjustable    
Enable
Light Load Efficiency
UVLO Adjustable    
Enable
Light Load Efficiency
UVLO Adjustable    
Enable
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable    
Enable
Light Load Efficiency    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode    
90     90     90     90     90     90    
-40 to 150     -40 to 150     -40 to 150     -40 to 150     -40 to 150     -40 to 85    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
SOIC | 8     SOIC | 8     SOIC | 8     SO PowerPAD | 8
SOIC | 8    
SO PowerPAD | 8
VSON | 10    
SO PowerPAD | 8    
Converter     Converter     Converter     Converter     Converter     Converter    
New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS54231

  最小   最大 范围
输入电压  V 3.5 to 28.0V
输出电压  V 0.8 to 25V
输出电流  A ≤ 2A
环境温度  °C -40 to 150°C


覆盖面积 BOM成本 效率


Preview design