SPI programmable 16-bit, 36V, 1A Power Supply with Integrated Current Shunt

(ACTIVE) TIPD138

Description & Features

Technical Documents

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Key Document

Description

This Verified Design provides the theory, component selection, simulation, PCB design, and measurement details for a SPI controlled 36V power supply capable of sourcing 1A.  It also includes an intergrated high-side current shunt accurate to 1% across multiple decades of current load.  The output of the design is sourced by the DAC8871 which supports both unipolar and bipolar output ranges.  As a result, this circuit can be easily modified to meet the needs of many different applications. See more TI Precision Designs

Features
  • 36V @ 1A Load SPI Controlled Output
  • 0.08% Measured FSR Gain Error
  • 8.2mV Measured Offset Error
  • Current Monitor Output
  • Variable Decades of Current Measurement

 

 

This Verified Design Includes:

  • Theory
  • Component Selection
  • TINA-TI Simulation
  • Schematics and PCB Layout
  • Verification and Measured Performance
  • Modification Options

 

 


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 (7)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DAC8871  16-Bit Single Channel, Serial Interface, +/-18V (High Voltage Bipolar) Output DAC   Digital-to-analog converters (DACs)  Sample & Buy View Design Kits & Evaluation Modules
INA146  High-Voltage, Programmable Gain Difference Amplifier  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LF411  Precision JFET-input Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA140  11MHz, Single Supply, Low Noise, Precision, Rail-to-Rail Output, JFET Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA2277  10µV, 0.1µV/˚C, High-Precision, Low-Power Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA549  High-Voltage, High-Current Op Amp, Excellent Output Swing  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF102  2.5ppm/°C Drift, 10-V Precision Voltage Reference  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
DAC8871 Download Download
INA146 Download Download
LF411 Download Download
Download Download
OPA140 Download Download
Download Download
Download Download
OPA2277 Download -
Download Download
Download Download
OPA549 Download Download
Download Download
REF102 Download Download
Download -
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Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

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


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 TI Recommends
PDF 1583 16 Jul 2014 0
Design files (3)
Title Abstract Type Size (KB) Date Views
PDF 196 11 Sep 2013 0
PDF 199 11 Sep 2013 0
ZIP 2729 10 Sep 2013 0
Related Tools & Software

Software (2)



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