Compact, efficient, 24-V input auxiliary power supply reference design for servo drives
TIDA-010009
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Key Document

Description

This reference design showcases a method to generate power supplies required in a servo or AC drive including the analog and digtal I/O interfaces, encoder supply, isolated transceivers and digital processing block. This design also implements protection against input reverse polarity, output overload and short circuit conditions.

Features
  • Powered from an external protective extra-low voltage (PELV) power supply of 24 V ±20%
  • Industrial eFuse at supply input providing programmable UV/OV, reverse polarity protection, output overload and SC protection
  • Synchronous buck DC/DC converter with integrated switch optimized for >90% efficiency and compact size
  • PSR flyback with integarted switch to generate isolated voltage rails for communication and digital I/Os
  • Programmable voltage output to support multiple encoder types
  • Output voltage rails: 24 VISO, 5 VISO, ±12 V, 5 V, 3.3 V, 2.5 V, 1.2 V with load and line regulation of <±1%

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (12)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD16301Q2  25V, N ch NexFET MOSFET™, single SON2x2, 29mOhm  MOSFETs  Sample & Buy Not Available
CSD19533Q5A  100V, N ch NexFET MOSFET™, single SON5x6, 9.5mOhm  MOSFETs  Sample & Buy Not Available
LM3880  3 Rail Simple Power Sequencer with Fixed Time Delay  Power management  Sample & Buy View Design Kits & Evaluation Modules
LM5180-Q1  Automotive 65-VIN PSR flyback converter with 100-V, 1.5-A integrated power MOSFET  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LMR33630  SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LP2951-N  Series of Adjustable Micropower Voltage Regulators  Power management  Sample & Buy View Design Kits & Evaluation Modules
TLV62569  2.5V-5.5V input, 2-A high efficiency step-down buck converter in SOT23 and SOT563 package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS25200  6.5 V/2.8 A eFuse with Overvoltage Clamp  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS2663  60V, 6A Power limiting, surge protection industrial eFuse  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS61170  1.2A Switch, 38V High Voltage Boost Converter in 2x2mm QFN Package  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
TPS62125  3V-17V, 300mA Buck Converter With Adjustable Enable Threshold And Hysteresis  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS62821  2.4V-5.5V input, 1A step-down converter With 1% Accuracy in 1.5x2mm QFN  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD16301Q2 WSON (DQK)| 6 Download -
CSD19533Q5A VSONP (DQJ)| 8 Download
LM3880 Download Download
LM5180-Q1 Download Download
LMR33630 Download Download
Download Download
LP2951-N Download Download
Download Download
Download
Download
TLV62569 Download Download
Download -
Download Download
TPS25200 Download
TPS2663 Download Download
TPS61170 Download Download
TPS62125 Download Download
TPS62821 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 8910 22 Feb 2019
Design files (6)
Title Type Size (KB) Date
ZIP 4145 25 Feb 2019
ZIP 2752 25 Feb 2019
PDF 1663 25 Feb 2019
PDF 298 25 Feb 2019
PDF 208 25 Feb 2019
PDF 479 25 Feb 2019

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