4.5V to 18V Input, 5-A Synchronous Step-Down Converter with Eco-mode™  - TPS54528

TPS54528 (ACTIVE)

4.5V to 18V Input, 5-A Synchronous Step-Down Converter with Eco-mode™

 

Recommended alternative parts

  • TPS56528  -  Looking for a device with Advanced Eco-mode™? Try theTPS56528.
  • TPS54527  -  Looking for a device with non Eco-mode™? Try the TPS54527.
  • TPS54628  -  Looking for a device with more output current? Try the TPS54628.
  • TPS54428  -  Looking for a device with less output current? Try the TPS54428.
  • TPS54531  -  Looking for a device with higher input voltage? Try theTPS54531.
  • TPS54494  -  Looking for a dual output device? Try the TPS54494

Description

The TPS54528 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54528 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 TPS54528 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 TPS54528 to maintain high efficiency during lighter load conditions. The TPS54528 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 VIN input. The output voltage can be programmed between 0.76 V and 6 V. The device also features an adjustable soft start time. The TPS54528 is available in the 8-terminal DDA package, and designed to operate from –40°C to 85°C.

Features

  • D-CAP2 Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 6 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 65 mΩ (High Side) and 36 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 650-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Auto-Skip Eco-mode for High Efficiency at Light
    Load

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Parametrics Compare all products in Buck Converter (Integrated Switch)

 
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
TPS54528 TPS54227 TPS54228 TPS54327 TPS54328 TPS54427 TPS54428 TPS54527 TPS54627 TPS54628 TPS562201 TPS563201 TPS564201 TPS564208 TPS56428 TPS565201 TPS565208 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    4.5    4.5    4.5    4.5    4.5    4.5   
18    18    18    18    18    18    18    18    18    18    17    17    17    17    18    17    17    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    0.76    0.76    0.6    0.76    0.76    0.76   
6    7    7    7    7    7    7    6    5.5    5.5    7    7    7    7    5.5    7    7    5.5   
5    2    2    3    3    4    4    5    6    6    2    3    4    4    4    5    5    5   
1    1    1    1    1    1    1    1    1    1    1    1    1    1    1    1    1    1   
650    700    700    700    700    650    650    650    650    650    580    580    500    500    650    400    500    650   
650    700    700    700    700    650    650    650    650    650    580    580    600    600    650    600    500    650   
0.9    0.8    0.8    0.8    0.8    0.95    0.95    0.9    0.95    0.95    0.4    0.4    0.4    0.4    0.25    0.4    0.6    0.25   
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
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    Current Mode    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2   
85    90    90    90    90    95    95    85    85    85    80    80    80    80    85    80    80    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 125    -40 to 125    -40 to 125    -40 to 125    -40 to 85    -40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
SO PowerPAD    SO PowerPAD
VSON   
SO PowerPAD
SOIC
VSON   
SO PowerPAD
VSON   
SO PowerPAD
VSON   
SO PowerPAD
VSON   
SO PowerPAD
VSON   
SO PowerPAD    SO PowerPAD    SO PowerPAD    SOT-23-THIN    SOT-23-THIN    SOT-23-THIN    SOT-23-THIN    SO PowerPAD
VQFN   
SOT-23-THIN    SOT-23-THIN    SO PowerPAD   
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WEBENCH® Designer TPS54528

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.765 to 6V
Iout  A ≤ 5A
Ambient Temp  °C -40 to 85°C


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