TPS54326 (正在供货)

具有 Eco-Mode™ 的 4.5V 至 18V 输入、3A 同步降压 SWIFT™ 转换器

具有 Eco-Mode™ 的 4.5V 至 18V 输入、3A 同步降压 SWIFT™ 转换器 - TPS54326
数据表
 

备选器件推荐

  • TPS54325  -  Looking for a device with non Eco-mode™? Try theTPS54325.
  • TPS54426  -  Looking for a device with more output current? Try the TPS54426.
  • TPS54226  -  Looking for a device with less output current? Try the TPS54226.
  • TPS54339E  -  Looking for a device with higher input voltage? Try theTPS54339E.
  • TPS54394  -  Looking for a dual output device? Try the TPS54394.

描述

The TPS54326 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54326 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54326 uses the D-CAP2™ mode control which provides a fast transient response with no external components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-mode operation at light load for high efficiency.

The TPS54326 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VCC input , and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54326 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.

特性

  • D-CAP2 Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VCC Input Voltage Range: 4.5 V to 18 V
  • Wide VIN Input Voltage Range: 2 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized
    for Lower Duty Cycle Applications
    - 120 mΩ (High Side) and 70 mΩ (Low Side)
  • High Efficiency, less than 10 µA at Shutdown
  • Auto-Skip Eco-mode™ for High Efficiency at Light Load
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • Power Good Output
  • APPLICATIONS
    • Wide Range of Applications for Low Voltage System
      • Digital TV Power Supply
      • High Definition Blu-ray Disc Players
      • Networking Home Terminal
      • Digital Set Top Box (STB)

D-CAP2 Is a trademark of Texas InstrumentsPower
PAD Is a trademark of Texas InstrumentsPower

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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
TPS54326 TPS54225 TPS54226 TPS54325 TPS54425 TPS54426 TPS54429 TPS54429E TPS54525 TPS54526 TPS54625 TPS54626
4.5    4.5    4.5    4.5    4.5    4.5    7    7    4.5    4.5    4.5    4.5   
18    18    18    18    18    18    18    18    18    18    18    18   
0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76   
5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5   
3    2    2    3    4    4    4.5    4.5    5.5    5.5    6.5    6.5   
1    1    1    1    1    1    1    1    1    1    1    1   
700    700    700    700    700    700    700    700    650    650    650    650   
700    700    700    700    700    700    700    700    650    650    650    650   
0.85    0.8    0.8    0.85    0.85    0.85    0.85    0.85    0.9    0.9    0.95    0.95   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2   
90    90    90    90    90    90    98    98    95    95    95    95   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -20 to 85    -20 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
HTSSOP
VQFN   
HTSSOP    HTSSOP
VQFN   
HTSSOP    HTSSOP    HTSSOP
QFN   
HTSSOP    HTSSOP
QFN   
HTSSOP    HTSSOP
QFN   
HTSSOP    HTSSOP   
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WEBENCH® Designer TPS54326

  最小   最大 范围
输入电压  V 4.5 to 18.0V
输出电压  V 0.765 to 5.5V
输出电流  A ≤ 3A
环境温度  °C -40 to 85°C


覆盖面积 BOM成本 效率


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