Summary

The Texas Instruments TPS50601A-SP is a step-down converter suitable for Space Satellite Point of Load Supply for FPGAs, Microcontrollers, data converters and ASICs. The product is radiation hardened, space-graded and is tested for on-orbit Single Event Effects (SEE) event rates in LEO and GEO using Cosmic Ray Effects on Micro-Electronics 96 (CREME96). Engineering Evaluation (/EM) Samples are available.

The current mode control feature of the product reduces component count and enables a high switching frequency. The product is offered in a thermally enhanced 20-pin ceramic, dual flatpack package for space applications and is integrated with high-side and low-side MOSFETs. Master-slave mode can be configured in addition, to provide up to 12-A of output current.

SS/TR pin controls the output voltage startup ramp allowing a stand-alone power supply operation or in tracking situations. With proper configuration of the enable and the open drain power good pins, power sequencing is also possible.

To protect the device, current runway is prevented by low-side sourcing current limit and the overload situations are prevented by cycle-by-cycle current limiting on the high-side FET

Low-side sinking current limit turns off the low-side MOSFET preventing the excessive reverse current. When thermal shutdown temperature is exceeded by the die temperature, the part is disabled by thermal shutdown.

Applications

  • Space satellite point of load supply for FPGAs, microcontrollers, data converters and ASICs
  • Space satellite payloads
  • Radiation hardened applications
  • Available in military (–55°C to 125°C) temperature range
  • Engineering evaluation (/EM) Samples are available

Orderable Part Numbers

Key features

  • 5962-10221:
    • Radiation hardened up to TID 100 krad(Si)
    • ELDRS free 100 krad(Si) – 10 mrad(Si)/s
    • Single lhup (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

Reference designs

  • TIDA-070001 - 3- to 7-VIN, Space-grade point-of-load (POL) reference design with redundant eFuse inputs for OCP

Development Kits

Testing & qualification

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Last updated: 2021-12-21

TPS50601A-SP

Radiation-hardness-assured (RHA), 3-V to 7-V input, 6-A synchronous step-down converter

Downloads

  • CAD model (external)
  • Datasheet (external)
  • ICD
    Request
  • Option sheet
    Request
  • User manual (external)

Specs

input voltage
3 to 7 V
output current
< 6 A
operating temperature
-55 to 125 C
25 C to 25 C (TPS50601AHKH/EM part number)
RoHS compliance
yes
REACH compliance
yes
export control
EAR99

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