1.6-V to 6.3-V input, 6-A Synchronous Step Down Swift Converter

Recommended alternative parts

  • TPS7H1101-SP  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 
  • TPS7A4501-SP  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 


The TPS50301 is a 6.3-V, 3-A and the TPS50601 is a 6.3-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 a high switching frequency, reducing the inductor's footprint. The devices are offered in a thermally enhanced 20-pin ceramic, dual in-line flatpack package.

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.


  • Peak Efficiency: 95% (VO = 3.3 V)
  • Integrated 55-mΩ/50-mΩ MOSFETs
  • Split Power Rail: 1.6 V to 6.3 V on PVIN
  • Power Rail: 3 V to 6.3 V on VIN
  • TPS50301-HT: 3 A
  • TPS50601-SP: 6 A
  • Flexible Switching Frequency Options:
    • 100-kHz to 1-MHz Adjustable Internal Oscillator
    • External Sync Capability from 100 kHz to 1 MHz
    • Sync Pin Can Be Configured as a 500-kHz Output for
      Master/Slave Applications
  • 0.795-V ±1.258% Voltage Reference at 25°C
  • Monotonic Start-Up into Pre-Biased Outputs
  • Adjustable Slow Start and Power Sequencing
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Adjustable Input Undervoltage Lockout
  • 20-Pin Thermally Enhanced Ceramic Flatpack Package (HKH)
  • For SWIFT Documentation, Visit
  • 5962R10221:
    • Radiation Hardness Assurance (RHA) up to TID 100 krad (Si)
    • ELDRS Free 100 krad (Si) – 10mRAD(Si)/sec
    • Single Event Latchup (SEL) Immune to LET = 85MeV-cm2/mg,
      See Radiation Report for details
    • SEB and SEGR Immune to 85MeV-cm2/mg, SOA Curve Available,
      See Radiation Report for details
    • SET/SEFI Cross-Section Plot Available,
      See Radiation Report for details

View more

Parametrics Evaluate all products in Step-Down (Buck) Converter

  TPS50601-SP Compare
Edit to find similar devices
Regulated Outputs (#) 1
Vin (Min) (V) 3
Vin (Max) (V) 6.3
Vout (Min) (V) 0.785
Vout (Max) (V) 5.5
Iout (Max) (A) 6
Iout2 (Max) (A) -
Vout2 (Min) (V) -
Vout2 (Max) (V) -
Topology Buck
  • Boost
  • Buck
  • Buck-Boost
  • Inverting Buck-Boost
Switching Frequency (Max) (kHz) 1000
Switch Current Limit (Typ) (A) 11
Iq (Typ) (mA) 5
Duty Cycle (Max) (%) 85
Soft Start Adjustable
  • Adjustable
  • Fixed
  • None
Compensation External
  • External
  • Internal
  • Not Needed
Special Features Enable
Frequency Synchronization
Power Good
  • Adjustable Current Limit
  • Adjustable UVLO
  • Dynamic Voltage Scaling
  • Enable
  • Frequency Synchronization
  • Light Load Efficiency
  • Phase Interleaving
  • Power Good
  • Synchronous Rectification
  • Tracking
Control Mode Current Mode
  • COT with emulated ripple
  • Constant on-time (COT)
  • Current Mode
  • D-CAP
  • D-CAP+
  • D-CAP2
  • D-CAP3
  • Voltage Mode
Preset Vout (V) -
Vref Accuracy (Typ) (%) 1.258
Rating Space
  • Automotive
  • Catalog
  • HiRel Enhanced Product
  • High Temp
  • Military
  • Space
Operating Temperature Range (C) -55 to 125
25 Only
°C to °C
Approx. Price (US$) -
Package Group CFP
  • CFP
  • DDPAK/TO-263
  • MSOP-PowerPAD
  • PDIP
  • QFN
  • SO PowerPAD
  • SOIC
  • SON
  • SOT
  • SOT-23
  • TO-220
  • TO-263
  • USON
  • VQFN
  • VSON
  • WQFN
  • WSON
  Sample & Buy Reset Update

So what do you think? Leave a comment about this table...

Featured tools and software

    Min   Max   Range  
  Vin V    3.00 – 6.30V  
  Vout V    0.80 – 5.50V  
  Iout A    ≤ 6A  
  Ambient Temp °C    -55 – 125°C  
Footprint BOM Cost Efficiency
'U1 Rt Css Rent Renb Cboot Rpg Cinx L1 Rfbb Rfbt Cout Cin Rcomp Ccomp Ccomp2 Ccomp3 '
What are WEBENCH® tools?
Click Here