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

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

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

Description

The TPS54620 in thermally enhanced 3.5mm × 3.5mm QFN package is a full featured 17V, 6A 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 26mΩ / 19mΩ MOSFETs
  • Split Power Rail: 1.6V to 17V on PVIN
  • 200kHz to 1.6MHz Switching Frequency
  • Synchronizes to External Clock
  • 0.8V ±1% Voltage Reference Over Temperature
  • Low 2µA 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
  • APPLICATIONS
    • High Density Distributed Power Systems
    • High Performance Point of Load Regulation
    • Broadband, Networking and Optical Communications Infrastructure

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)
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 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    
Enable
Frequency Synchronization
Power Good
Tracking
Synchronous Rectification    
Enable
Power Good
Tracking
Frequency Synchronization
Synchronous Rectification    
SWIFT     SWIFT    
Current Mode     Current Mode    
1     1    
Catalog     Catalog    
-40 to 150     -40 to 150    
14VQFN     14VQFN    
2.50 | 1ku     1.60 | 1ku    
WEBENCH® TPS54620
    Min   Max   Range  
  Vin V    4.50 – 17.00V  
  Vout V    0.80 – 15.00V  
  Iout A    ≤ 6.00A  
  Ambient Temp °C    ≤ 100°C  
Footprint BOM Cost Efficiency
 
 
 
'U1 Rt Css Rent Renb Cboot Rpg Cinx L1 Rfb1 Rfb2 Cout Cin Rcomp Ccomp '
 
What are WEBENCH® tools?
Click Here