4.5V to 18V Input, 2A Synchronous Step-Down SWIFT™ Converter with Eco-Mode™ - TPS54226

TPS54226 (ACTIVE)

4.5V to 18V Input, 2A Synchronous Step-Down SWIFT™ Converter with Eco-Mode™

Recommended alternative parts

  • TPS54225  -  Looking for a device with non Eco-mode™? Try the TPS54225.
  • TPS54326  -  Looking for a device with more output current? Try the TPS54326.
  • TPS54239E  -  Looking for a device with higher input voltage? Try theTPS54239E.
  • TPS54294  -  Looking for a dual output device? Try theTPS54294.

Description

The TPS54226 is a adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54226 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 TPS54226 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation 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 TPS54226 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 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 TPS54226 is available in the 14 pin HTSSOP or 16 pin QFN 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 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
    – 160 mΩ (High Side) and 110 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 Over Current Limit
  • Power Good Output
  • Auto-Skip Mode
  • 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)

Eco-Mode Is a trademark of Texas Instruments
PowerPAD Is a trademark of Texas Instruments

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Parametrics Compare all products in Step-Down (Buck) Converter

 
Iout (Max) (A)
Iout2 (Max) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Compensation
Brand
Control Mode
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS54226 TPS54526 TPS54426 TPS54326 TPS54295 TPS542941 TPS54394 TPS54294 TPS542951 TPS54494 TPS54495 TPS54429E TPS54395
2     5.5     4     3     2     2     3     2     2     4     4     4.5     3    
        2     3     3     2     3     2     2       3    
0.8     0.9     0.85     0.85     1.3     1.3     1.2     1.3     1.3     1.2     1.2     0.85     1.2    
90     95     90     90     85     85     85     85     85     85     85     98     85    
Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed    
  SWIFT     SWIFT     SWIFT                      
D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2       D-CAP2     D-CAP2     D-CAP2     D-CAP2    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-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 85     -40 to 85     -40 to 85     -20 to 85     -40 to 85    
14HTSSOP
16QFN    
14HTSSOP
16QFN    
14HTSSOP
16QFN    
14HTSSOP
16QFN    
16HTSSOP
16QFN    
16HTSSOP
16QFN    
16HTSSOP
16QFN    
16HTSSOP
16QFN    
16HTSSOP
16QFN    
16HTSSOP
16QFN    
16HTSSOP
16QFN    
14HTSSOP
16QFN    
16HTSSOP
16QFN    
0.75 | 1ku     1.22 | 1ku     1.08 | 1ku     0.87 | 1ku     1.15 | 1ku     1.25 | 1ku     1.40 | 1ku     2.13 | 100u     1.25 | 1ku     1.50 | 1ku     1.50 | 1ku     1.09 | 1ku     1.40 | 1ku    
WEBENCH® TPS54226
    Min   Max   Range  
  Vin V 4.5 to 18.0V  
  Vout V 0.77 to 5.5V  
  Iout A ≤ 2A  
  Ambient Temp °C -40 to 125°C  
Footprint BOM Cost Efficiency
 
   
 
 
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