Low Noise Split Rail Non-Isolated Boost + - 12V Power Supply LOWNOISESPLITRAILNONISO-BOOST-REF (ACTIVE)

Description & Features

Technical Documents

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Description

This circuit boosts 5V to a low noise +/- 12V bias at 40mA for use in analog circuitry. This design uses the LM5001 fully integrated switch mode regulator in concert with a very small EP5 transformer to create a non-isolated positive and negative power rail (for isolation see "± 5V Isolated, Low Noise Split Rail Generator User Guide" below). This design uses less than 1 square inch of double sided PCB with components on only one side. The same basic circuit can be used to develop other voltages such as +/- 15V or +/- 5V.

Features
  Input Range Output 1 Output 2
  LM5001    Min 4.5V     12V     -12V  
  Max 5.5V     40 mA  
  40 mA  

The performance of the reference design is as follows:

  • 5V Input
  • +/- 12V Outputs
  • Over 40 mA Output Current
  • Low Ripple Noise for split rail analog circuits (< 2 mV p-p)
  • Small Size ~1" x 1"

The performance of the reference design is as follows:

  • 5V Input
  • +/- 12V Outputs
  • Over 40 mA Output Current
  • Low Ripple Noise for split rail analog circuits (< 2 mV p-p)
  • Small Size ~1" x 1"

 



  




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Part Number Status

LOWNOISESPLITRAILNONISO-BOOST-REF:
Low Noise Split Rail Non-Isolated Boost + - 12V Power Supply

ACTIVE

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5001  3.1-75V Wide Vin, 1A Current Mode Non-Synchronous Switch Mode Regulator  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
LM5002  3.1-75V Wide Vin, 0.5A Current Mode Boost, Flyback, Sepic Converter  Step-up (boost)  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5001 Download Download
Download Download
LM5002 Download Download
Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents
User guides (2)
Title Type Size (KB) Date
PDF 1093 27 Jan 2012
PDF 812 27 Jan 2012

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