Digital control reference design for cost-optimized battery test systems
TIDA-010086
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Key Document
Description
This reference design provides a cost-effective solution for battery formation and test applications. This design uses the C2000™ real-time control MCU for high-resolution pulse-width modulation (PWM) generation, and constant-current (CC) and constant-voltage (CV)
control loops. It efficiently utilizes the MCU, and does not require a precision digital-to-analog converter, which saves more than 30% in the bill of materials. The flexibility of current and voltage loops in software allows users to achieve multiple current and voltage levels output with one design.
Features
- Bidirectional current control up to 10 A with less than ±0.01% accuracy
- C2000 on-chip 12-bit ADC achieves control accuracy better than ±0.05%
- Parallel up to 8 channels for wide output current range
- Flexible digital constant-current and constant-voltage control loops
- Channel-to-channel crosstalk error below 0.01%
- Multilevel protection in hardware and software for reliable power supply design
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Schematic/Block Diagram
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Design Guide
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TI Devices (12)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| ADS131M08 |
24-bit 32-kSPS 8-channel simultaneous-sampling delta-sigma ADC |
Analog-to-digital converters (ADCs) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| INA821 |
High bandwidth (4.7MHz), low noise (7nV/√Hz), precision (35μV), low-power, instrumentation amp |
Amplifiers |
Sample & Buy |
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| LM5109B |
1-A, 100-V half bridge gate driver with 8-V UVLO and high noise immunity |
Gate drivers |
Sample & Buy |
Not Available |
| LM5118 |
3-75V Wide Vin, Current Mode Non-Synchronous Buck-Boost Controller |
Buck-boost & inverting regulators |
Sample & Buy |
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| LP38693 |
500-mA, 10-V, low-dropout voltage regulator with enable |
Power management |
Sample & Buy |
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| LP5907 |
250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable |
Power management |
Sample & Buy |
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| REF2025 |
8-ppm/°C drift, low-power, dual-output Vref & Vref/2 voltage reference |
Voltage references |
Sample & Buy |
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| TLV171 |
36V Low-Power RRO General-Purpose Operational Amplifier |
Operational amplifiers (op amps) |
Sample & Buy |
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| TMS320F280049 |
C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 256 KB Flash, CLA, PGAs, SDFM |
Microcontrollers (MCUs) |
Sample & Buy |
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| TPS63710 |
Low Noise, 1A Synchronous Inverting Buck Converter in 3x3 WSON Package |
Buck-boost & inverting regulators |
Sample & Buy |
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| TPS723 |
200-mA, negative, adjustable low-dropout voltage regulator with enable |
Power management |
Sample & Buy |
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| TPS736 |
400-mA, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable |
Power management |
Sample & Buy |
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CAD/CAE symbols
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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
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.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at https://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
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Technical documentation
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User guide (3)
| | PDF | 2661 |
03 Nov 2020
|
| | PDF | 6606 |
28 May 2020
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| | PDF | 4203 |
26 Jun 2019
|
Design files (6)
| | ZIP | 2055 |
02 Nov 2020
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| | ZIP | 7285 |
02 Nov 2020
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| | ZIP | 6288 |
02 Nov 2020
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| | ZIP | 2000 |
02 Nov 2020
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| | PDF | 266 |
02 Nov 2020
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| | PDF | 2894 |
02 Nov 2020
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