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™

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

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Parametrics Compare all products in Buck Converter (Integrated Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Performance Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
Approx. Price (US$)
TPS54620 TPS54320 TPS54622 TPS54623
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    
1     1     1     1    
200     200     200     200    
1600     1200     1600     1600    
0.6     0.6     0.002     0.002    
Enable
Frequency Synch
Power Good
Synchronous Rectification
Tracking
Pre-Bias Start-Up    
Enable
Frequency Synch
Power Good
Synchronous Rectification
Tracking
Pre-Bias Start-Up    
Enable
Frequency Synch
Power Good
Synchronous Rectification
Tracking
Pre-Bias Start-Up    
Enable
Frequency Synch
Light Load Efficiency Mode
Power Good
Synchronous Rectification
Tracking
Pre-Bias Start-Up    
Current Mode     Current Mode     Current Mode     Current Mode    
98     98     98     98    
-40 to 150     -40 to 150     -40 to 150     -40 to 150    
Catalog     Catalog     Catalog     Catalog    
VQFN     VQFN     VQFN     VQFN    
2.50 | 1ku     1.50 | 1ku     2.50 | 1ku     3.00 | 1ku    
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WEBENCH® Designer TPS54620

  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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