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TIPD138
SPI-programmable, 16-bit 36-V 1-A power supply with integrated current shunt reference design
TIPD138
Overview
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.
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
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDR153.PDF (199 K)
Detailed schematic diagram for design layout and components
TIDC026.ZIP (3066 K)
Detailed schematic diagram for design layout and components
TIDR154.PDF (196 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDC042.ZIP (2729 K)
Design file that contains information on physical board layer of design PCB
Products
Includes TI products in the design and potential alternatives.
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | 36-V 1-A SPI Controlled Power Supply With Integrated Current Shunt Design Guide (Rev. A) | Jul. 16, 2014 |
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