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
1     1    
4.5     4.5    
17     17    
0.8     0.8    
15     15    
6     3    
Buck     Buck    
1600     1200    
8     4.2    
0.6     0.6    
98     98    
Adjustable     Adjustable    
External     External    
Frequency Synchronization
Power Good
Synchronous Rectification    
Power Good
Frequency Synchronization
Synchronous Rectification    
Current Mode     Current Mode    
1     1    
Catalog     Catalog    
-40 to 150     -40 to 150    
14VQFN     14VQFN    
2.50 | 1ku     1.50 | 1ku    
New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.
Loading Data Loading...
    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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