TPS50601A-SP Radiation Hardness Assured (RHA) 3.0-V to 7-V input, 6-A Synchronous Step Down Converter |


Radiation Hardness Assured (RHA) 3.0-V to 7-V input, 6-A Synchronous Step Down Converter



The TPS50601A-SP is a radiation hardened, 7-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 an ultra small, thermally enhanced 20-pin ceramic 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. In addition, the TPS50601A-SP can be configured in master-slave mode to provide up to 12-A of output current.

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.


  • 5962-10221:
    • Radiation Hardened up to TID 100 krad(Si)
    • ELDRS Free 100 krad(Si) – 10 mrad(Si)/s
    • Single Event Latchup (SEL) Immune to
      LET = 75 MeV-cm2/mg
    • SEB and SEGR Immune to 75 MeV-cm2/mg, SOA Curve Available
    • SET/SEFI Cross-Section Plot Available
  • Peak Efficiency: 96.6% (VO = 3.3 V)
  • Integrated 58-mΩ/50-mΩ MOSFETs
  • Power Rail: 3 to 7 V on VIN
  • 6-A Maximum Output Current
  • 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
  • 0.804-V ±1.5% Voltage Reference Overtemperature, Radiation, and Line and Load Regulation
  • Monotonic Start-Up Into Prebiased Outputs
  • Adjustable Soft Start Through External Capacitor
  • Input Enable and Power-Good Output for Power Sequencing
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Adjustable Input Undervoltage Lockout (UVLO)
  • 20-Pin Ultra-Small, Thermally-Enhanced Ceramic Flatpack Package (HKH) for Space Applications

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Parametrics Compare all products in Buck converters (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)
Control mode
Duty cycle (Max) (%)
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
TPS50601A-SP TPS50601-SP TPS50602-SP
3     3     3    
7     6.3     7    
0.804     0.795     0.804    
5.95     5.5     5.95    
6     6     6    
1     1     2    
100     100     100    
1000     1000     1000    
5     5     5    
Frequency Synchronization
Power Good    
Frequency Synchronization
Power Good    
Frequency Synchronization
Power Good    
Current Mode     Current Mode     Current Mode    
100     85     100    
-55 to 125
25 to 25    
-55 to 125
25 Only    
-55 to 125
25 to 25    
Space     Space     Space    
CFP | 20     CFP | 20     CFP | 64    
Converter     Converter      
See datasheet (CFP)     See datasheet (CFP)     See datasheet (CFP)    

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  Min   Max Range
Vin  V 3.0 to 7.0V
Vout  V 0.795 to 5.5V
Iout  A ≤ 6A
Ambient Temp  °C -55 to 125°C