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

TPS54620 (ACTIVE)

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™

TPS54620 Smallest 6-A, 17-V SWIFT™ DC/DC

TPS54620 Smallest 6-A, 17-V SWIFT™ DC/DC

Description

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.

Features

  • 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
    Overvoltage
  • Adjustable Input Undervoltage Lockout
  • Supported by SwitcherPro™ Software Tool
  • For SWIFT™ Documentation and SwitcherPro™,
    visit http://www.ti.com/swift

View more

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)
Iout2 (Max) (A)
Vout2 (Min) (V)
Vout2 (Max) (V)
Topology
Switching Frequency (Max) (kHz)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Soft Start
Compensation
Special Features
Brand
Control Mode
Vref Accuracy (Typ) (%)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS54620 TPS54821 TPS54622 TPS54020 TPS54521 TPS54320 TPS65276V TPS56921 TPS51363 TPS51362 TPS65281 TPS53318 TPS54340
1     1     1     1     1     1     2     1     1     1     1     1     1    
4.5     4.5     4.5     4.5     4.5     4.5     4.5     4.5     3     3     4.5     1.5     4.5    
17     17     17     17     17     17     18     17     22     22     18     22     42    
0.8     0.6     0.6     0.6     0.8     0.8     0.6     0.72     0.6     0.6     0.8     0.6     0.8    
15     15     15     5     15     15     15     1.48     2     2     17     5.5     41    
6     8     6     10     5     3     6     9     10     10     3     8     3.5    
            3.5                
            0.6                
            15                
Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck
Inverting Buck-Boost    
1600     1600     1600     1200     900     1200     1600     1600     800     800     1400     1000     2500    
8     11.5     8     15     8     4.2       15.5     12     12       8     5.5    
0.6     0.6     0.002     0.6     0.6     0.6     10     0.77     0.56     0.1     0.8     0.32     0.146    
98     100     98     98     98     98     95     100     87     87       90     98    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Fixed    
External     External     External     External     External     External     External     External     Not Needed     Not Needed     External     Not Needed     External    
Enable
Frequency Synchronization
Power Good
Tracking
Synchronous Rectification    
Enable
Frequency Synchronization
Power Good
Synchronous Rectification
Tracking    
Enable
Frequency Synchronization
Power Good
Tracking
Synchronous Rectification    
Enable
Frequency Synchronization
Power Good
Tracking
Adjustable Current Limit
Phase Interleaving
Light Load Efficiency
Synchronous Rectification    
Enable
Power Good
Tracking
Frequency Synchronization
Synchronous Rectification    
Enable
Power Good
Tracking
Frequency Synchronization
Synchronous Rectification    
Adjustable Current Limit
Adjustable UVLO
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Phase Interleaving
Power Good
Synchronous Rectification
Telemetry    
Dynamic Voltage Scaling
Enable
Power Good
Synchronous Rectification
Tracking    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Adjustable Current Limit
Adjustable UVLO
Enable
Light Load Efficiency
Power Good
Synchronous Rectification
Tracking    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
SWIFT     SWIFT     SWIFT     SWIFT       SWIFT       SWIFT           SWIFT      
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     D-CAP2     D-CAP2     Current Mode     D-CAP     Current Mode    
1     1     1     1     3     1     1     1     1     1     1     1     1    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 150     -40 to 125     -40 to 150     -40 to 150     -40 to 125     -40 to 150     -40 to 125     -40 to 125     -10 to 85     -10 to 85     -40 to 125     -40 to 85     -40 to 125    
14VQFN     14VQFN     14VQFN     15VQFN     14VQFN     14VQFN     32HTSSOP
36VQFN    
20HTSSOP     28VQFN-CLIP     28VQFN-CLIP     16VQFN     22LSON-CLIP     8SO PowerPAD    
2.50 | 1ku     1.90 | 1ku     2.50 | 1ku     3.10 | 1ku     1.02 | 1ku     1.50 | 1ku     2.50 | 1ku     2.20 | 1ku     2.10 | 1ku     2.30 | 1ku     1.20 | 1ku     3.05 | 1ku     1.68 | 1ku    
WEBENCH® TPS54620
    Min   Max   Range  
  Vin V    4.50 – 17.00V  
  Vout V    0.80 – 15.00V  
  Iout A    ≤ 6A  
  Ambient Temp °C    -40 – 150°C  
Footprint BOM Cost Efficiency
 
   
 
 
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