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

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The TPS50301-HT is a 6.3-V, 3-A and the TPS50601-SP 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 to 6.3 V on PVIN
  • Power Rail: 3 to 6.3 V on VIN
  • TPS50301-HT: 3 A
  • TPS50601-SP: 6A
  • Flexible Switching Frequency Options:
    • 100-kHz to 1-MHz Adjustable Internal Oscillator
    • External Sync Capability: 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 Prebiased Outputs
  • Adjustable Slow Start and Power Sequencing
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Adjustable Input Undervoltage Lockout (UVLO)
  • 20-Pin Thermally-Enhanced Ceramic Flatpack Package (HKH)
  • See for SWIFT Documentation
  • 5962R10221:
    • Radiation Hardness Assurance (RHA) up to TID 100 krad (Si)
    • ELDRS Free 100 krad (Si) – 10 mRAD(Si)/s
    • Single Event Latchup (SEL) Immune to
      LET = 85 MeV-cm2/mg
    • SEB and SEGR Immune to 85 MeV-cm2/mg, SOA Curve Available (See )
    • SET/SEFI Cross-Section Plot Available

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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)
Switching Frequency (Max) (kHz)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Soft Start
Special Features
Control Mode
Vref Accuracy (Typ) (%)
Operating Temperature Range (C)
TPS50601-SP TPS50301-HT
1     1    
3     3    
6.3     6.3    
0.785     0.785    
5.5     5.5    
6     3    
Buck     Buck    
1000     1000    
11     10    
5     5    
85     85    
Adjustable     Adjustable    
External     External    
Frequency Synchronization
Power Good
Frequency Synchronization
Power Good
Current Mode     Current Mode    
Space     High Temp    
-55 to 125
25 Only    
-55 to 210    
New! Interactive Design
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Loading Data Loading...
    Min   Max   Range  
  Vin V 3.0 to 6.3V  
  Vout V 0.8 to 5.5V  
  Iout A ≤ 6A  
  Ambient Temp °C -55 to 125°C  
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