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

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

 

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Description

The TPS54620 in thermally enhanced 3.50 mm × 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 footprint of the inductor.

The output voltage start-up 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 that 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 and 19 mΩ MOSFETs
  • Split Power Rail: 1.6 V to 17 V on PVIN
  • 200-kHz to 1.6-MHz Switching Frequency
  • Synchronizes to External Clock
  • 0.8 V ±1% Voltage Reference Overtemperature
  • Low 2-µA Shutdown Quiescent Current
  • Monotonic Start-Up into Prebiased Outputs
  • –40°C to 150°C Operating Junction Temperature Range
  • Adjustable Slow Start and Power Sequencing
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Adjustable Input Undervoltage Lockout
  • For SWIFT™ Documentation, Visit http://www.ti.com/swift
  • Create a Custom Design Using the TPS54620 With the WEBENCH Power Designer

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WEBENCH® Designer TPS54620

  Min   Max Range
Vin  V 4.5 to 17.0V
Vout  V 0.8 to 15V
Iout  A ≤ 6A
Ambient Temp  °C -40 to 140°C

Parametrics

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Part number Order 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) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS54620 Order now 4.5     17     0.8     15     6     1     200     1600     0.6     Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Soft Start Adjustable    
Current Mode     98     -40 to 150     Catalog     VQFN | 14     Converter     14VQFN: 12 mm2: 3.5 x 3.5 (VQFN | 14)    
TPS54622 Order now 4.5     17     0.6     15     6     1     200     1600     0.6     Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Soft Start Adjustable    
Current Mode     98     -40 to 125
-40 to 150    
Catalog     VQFN | 14     Converter     14VQFN: 12 mm2: 3.5 x 3.5 (VQFN | 14)    
TPS54623 Order now 4.5     17     0.6     15     6     1     200     1600     0.25     Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Soft Start Adjustable    
Current Mode     98     -40 to 150     Catalog     VQFN | 14     Converter     14VQFN: 12 mm2: 3.5 x 3.5 (VQFN | 14)