Soft-Start Isolated Power Supply Reference Design

(ACTIVE) TIDA-00326

Description & Features

Technical Documents

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Description

This reference design demonstrates a Soft-Start Isolated Power Supply. It utilizes a TPS22965 Load-Switch and SN6501 Transformer Driver to slew-rate limit the ramp-up power on the primary supply, and utilizes a Transformer plus a full-wave rectifier to generate the isolated secondary power.

Features
  • Operates with 3.3V or 5V primary supplies
  • 50uA load switch quiescent current
  • High primary-side current drive
    • 350mA with 5V supply
    • 150mA with 3.3V supply
  • Primary side rise time = ~2ms

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
SN6501  Low-noise, 350 mA, 410-kHz transformer driver for isolated power supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules
TPS22965  5.7V, 6A, 16mΩ Load Switch With Adjustable Rise Time and Optional Quick Output Discharge  Power switches  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
SN6501 Download Download
TPS22965 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 290 10 Oct 2014 0
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 80 10 Oct 2014 0
PDF 97 10 Oct 2014 0
PDF 25 10 Oct 2014 0

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