Protected DC-bus input power and control power supply reference design for low-voltage servo drives
TIDA-010070
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Key Document
Description
This reference design uses an ORing controller, the LM5050-1 to provide protection against reverse polarity and reverse current. In conjunction, the LM5069 hot swap controller is used for overcurrent, over voltage, under voltage protection, and inrush current limitation. The design also features power rails for the control electronics including the gate drive, encoder and MCU circuitry.
Features
- Protect the DC bus voltage against over voltage, reverse polarity, overcurrent and inrush current.
- Prevent reverse current flow back into the common DC bus supply during motor braking.
- Ability to withstand up to 100-V transients on the DC link (48 V nominal).
- Option to power the MCU using the USB for configuration in absence of DC bus input.
- Protect the encoder supplies (both from the DC bus and external back up battery) against short-circuit fault.
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Schematic/Block Diagram
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Design Guide
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TI Devices (11)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| CSD19536KTT |
100-V, N channel NexFET™ power MOSFET, single D2PAK, 2.4 mOhm |
MOSFETs |
Sample & Buy |
Not Available |
| CSD25501F3 |
-20-V, P channel NexFET™ power MOSFET, single LGA 0.6 mm x 0.7 mm, 76 mOhm, gate ESD protection |
MOSFETs |
Sample & Buy |
Not Available |
| LM5050-1 |
5-V to 75-V, 400-uA IQ ideal diode controller |
Power switches |
Sample & Buy |
View Design Kits & Evaluation Modules |
| LM5069 |
9-V to 80-V hot swap controller with power limiting |
Power switches |
Sample & Buy |
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| LM5164 |
6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ |
Step-down (buck) regulators |
Sample & Buy |
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| LP38691 |
500-mA, 10-V, low-dropout voltage regulator |
Power management |
Sample & Buy |
Not Available |
| TPS2121 |
2.7-V to 22-V, 56-mΩ, 4.5-A, power mux with seamless switchover |
Power switches |
Sample & Buy |
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| TPS22919 |
5.5-V, 1.5-A, 90-mΩ load switch with adj. output discharge |
Power switches |
Sample & Buy |
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| TPS2662 |
4.5-V to 57-V, 478mΩ, 0.025-0.88A eFuse with integrated input and output reverse polarity protection |
Power switches |
Sample & Buy |
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| TPS3703-Q1 |
Automotive high-accuracy window supervisor with reset time delay |
Power management |
Sample & Buy |
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| TPS560430 |
SIMPLE SWITCHER® 36-V, 600-mA Buck Regulator With High-Efficiency Sleep Mode |
Step-down (buck) regulators |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
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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.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
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Technical documentation
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User guide (1)
| Title | Type | Size (KB) | Date |
| | PDF | 3452 |
04 Dec 2019
|
Design files (6)
| | ZIP | 321 |
04 Dec 2019
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| | ZIP | 2953 |
04 Dec 2019
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| | PDF | 1163 |
04 Dec 2019
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| | PDF | 209 |
04 Dec 2019
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| | PDF | 102 |
04 Dec 2019
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| | PDF | 263 |
04 Dec 2019
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