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

Description

Redundancy is often employed in spacecraft applications to enhance reliability, this reference design shows how redundancy can be implemented at the input of a Point-of-Load (POL) supply using two TPS7H2201-SP radiation hardened eFuse load switches. Using two load switches allows for a primary and redundant voltage to be supplied to the rad hardened POL step-down converter TPS50601A-SP, Applications the load switch provides an adjustable over-current protection (OCP) limit for protection along with a current sense ouput pin allows for monitoring and protection, the load switch also features adjustable over-voltage protection (OVP). The POL converter also has a current limit providing additional protection to shorts.

Features
  • Adjustable over-current protection (OCP) limit
  • Adjustable over-voltage (OVP) limit
  • Redundant inputs
  • Configurable soft start
  • Enable/disable functionality

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Parametrics
 TIDA-070001.1
(Output Voltage 1)
Vin (Min) (V)3
Vin (Max) (V)7
Vout (Nom) (V)2.5
Iout (Max) (A)6
Output Power (W)15
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Synchronous

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS50601A-SP  Radiation-hardness-assured (RHA), 3-V to 7-V input, 6-A synchronous step-down converter  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
TPS7H2201-SP  Radiation-hardness-assured (RHA), 1.5-V to 7-V input, 6-A eFuse  Power switches  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS50601A-SP Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 3419 30 Jul 2019
Design files (6)
Title Type Size (KB) Date
ZIP 1272 20 Dec 2018
ZIP 1985 20 Dec 2018
ZIP 1714 20 Dec 2018
ZIP 559 20 Dec 2018
ZIP 99 20 Dec 2018
PDF 257 20 Dec 2018
Related Tools & Software

Reference Designs (3)

Name Part Number Tool Type
20- to 40-VIN, 50-W Space-grade isolated flyback DC/DC over-current protection reference design  TIDA-070002  Reference design 
3- to 7-VIN, 24-A IOUT, 0.95-VOUT, Space-grade current sharing point-of-load (POL) reference design  TIDA-070005  Reference design 
TPS50601SPEVM MINI POL Reference Design  PMP8904  Reference design 

Hardware development (2)

Name Part Number Tool Type
TPS50601A-SP single-operation evaluation module  TPS50601ASPEVM-S  Evaluation board 
TPS7H2201-SP Single Evaluation Module  TPS7H2201EVM-CVAL  Evaluation board 

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