4.5V to 17V Input, 6A Synchronous Step-Down SWIFT™ Converter - TPS54620


4.5V to 17V Input, 6A Synchronous Step-Down SWIFT™ Converter

Recommended alternative parts

  • TPS54623  -  4.5 to 17V, 6A SWIFT Step Down DC/DC Converter with Eco-Mode™


The TPS54620 in thermally enhanced 3.50 mm x 3.50 mm QFN package is a full featured 17 V, 6-A synchronous step down converter which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor's footprint.

The output voltage startup ramp is controlled by the SS/TR pin which allows operation as either a stand alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins.

Cycle-by-cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature.


  • Integrated 26 mΩ / 19 mΩ MOSFETs
  • Split Power Rail: 1.6 V to 17 V on PVIN
  • 200kHz to 1.6 MHz Switching Frequency
  • Synchronizes to External Clock
  • 0.8V ±1% Voltage Reference Over Temperature
  • Low 2 µA Shutdown Quiescent Current
  • Monotonic Start-Up into Pre-biased Outputs
  • –40°C to 150°C Operating Junction Temperature Range
  • Adjustable Slow Start/Power Sequencing
  • Power Good Output Monitor for Undervoltage and
  • Adjustable Input Undervoltage Lockout
  • Supported by SwitcherPro™ Software Tool
  • For SWIFT™ Documentation and SwitcherPro™,
    visit http://www.ti.com/swift

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

Regulated Outputs (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Switching Frequency (Max) (kHz)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Soft Start
Special Features
Control Mode
Vref Accuracy (Typ) (%)
Operating Temperature Range (C)
Approx. Price (US$)
TPS54620 TPS54320 TPS54622 TPS54623
1     1     1     1    
4.5     4.5     4.5     4.5    
17     17     17     17    
0.8     0.8     0.6     0.6    
15     15     15     15    
6     3     6     6    
Buck     Buck     Buck     Buck    
1600     1200     1600     1600    
8     4.2     8     8    
0.6     0.6     0.002     0.002    
98     98     98     98    
Adjustable     Adjustable     Adjustable     Adjustable    
External     External     External     External    
Frequency Synchronization
Power Good
Synchronous Rectification    
Power Good
Frequency Synchronization
Synchronous Rectification    
Frequency Synchronization
Power Good
Synchronous Rectification    
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification    
Current Mode     Current Mode     Current Mode     Current Mode    
1     1     1     1    
Catalog     Catalog     Catalog     Catalog    
-40 to 150     -40 to 150     -40 to 150     -40 to 150    
14VQFN     14VQFN     14VQFN     14VQFN    
2.50 | 1ku     1.50 | 1ku     2.50 | 1ku     3.00 | 1ku    
New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.
    Min   Max   Range  
  Vin V 4.5 to 17.0V  
  Vout V 0.8 to 15.0V  
  Iout A ≤ 6A  
  Ambient Temp °C -40 to 150°C  
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