TPS54328 (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™ - TPS54328
 

备选器件推荐

  • TPS54327  -  non Eco-mode? Try the TPS54327.
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  • TPS54228  -  Looking for a device with less output current? Try the TPS54228.
  • TPS54339E  -  Looking for a device with higher input voltage? Try theTPS54339E.
  • TPS54394  -  Looking for a dual output device? Try the TPS54394.
  • TPS54326  -  Looking for a device with Power-good? Try the TPS54326.

描述

The TPS54328 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54328 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components.

The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode operation at light loads. Eco-mode allows the TPS54328 to maintain high efficiency during lighter load conditions. The TPS54328 also has a proprietary circuit that enables the device to adopt 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 input (VIN).

The output voltage can be programmed from 0.76 V to 7 V. The device also features an adjustable soft start time. The TPS54328 is available in 8-pin DDA and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.

特性

  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications
    • 100 mΩ (High-Side) and 70 mΩ (Low-Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • Auto-Skip Eco-Mode™ for High Efficiency at Light Load

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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
TPS54328 TPS54227 TPS54228 TPS54327 TPS54427 TPS54428 TPS54527 TPS54528 TPS54627 TPS54628 TPS56428 TPS56528
4.5    4.5    4.5    4.5    4.5    4.5    4.5    4.5    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    0.6    0.76   
7    7    7    7    7    7    6    6    5.5    5.5    5.5    5.5   
3    2    2    3    4    4    5    5    6    6    4    5   
1    1    1    1    1    1    1    1    1    1    1    1   
700    700    700    700    650    650    650    650    650    650    650    650   
700    700    700    700    650    650    650    650    650    650    650    650   
0.8    0.8    0.8    0.8    0.95    0.95    0.9    0.9    0.95    0.95    0.25    0.25   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
D-CAP2    D-CAP2    D-CAP2    D-CAP2    Current Mode    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2   
90    90    90    90    95    95    85    85    85    85    85    85   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 125    -40 to 125    -40 to 85    -40 to 125   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
SO PowerPAD
VSON   
SO PowerPAD
VSON   
SO PowerPAD
SOIC
VSON   
SO PowerPAD
VSON   
SO PowerPAD
VSON   
SO PowerPAD
VSON   
SO PowerPAD    SO PowerPAD    SO PowerPAD    SO PowerPAD    SO PowerPAD
VQFN   
SO PowerPAD   
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WEBENCH® Designer TPS54328

  最小   最大 范围
输入电压  V 4.5 to 18.0V
输出电压  V 0.765 to 7V
输出电流  A ≤ 3A
环境温度  °C -40 to 85°C


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