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Linear motor power stage

Products and reference designs
Block diagram

Linear motor power stage

Block diagram

Overview

Our integrated circuits and reference designs help create compact, efficient and protected linear motor power stages with accurate, high bandwidth torque control and high-speed, low latency communication to the segment controller for fast and smooth motion of multiple linear movers from zero to high speed.

Design requirements

Linear motor power stage systems often require:

  • Small form factor power stages with high efficiency and overcurrent protection.
  • Accurate current and voltage sensing at small form factor.
  • Advanced processing for fast and accurate linear motor torque generation.
  • High-speed, low-latency wired interfaces with high EMC immunity.
Explore applications similar in function and design

Block diagram

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Linear motor power stage

Linear motor can be based on 3-phase or 2-phase coil system Linear motor can be based on 3-phase or 2-phase coil system Temp coil Temp coil Temp power stage Temp power stage To linear motor segment controller To linear motor segment controller DC voltage input: 24 – 60Vdc DC voltage input: 24 – 60Vdc Inverter type can be half-bridge or full-bridge topology per ... Inverter type can be half-bridge or full-bridge topology per coil. Low-side shunt or in-phase current sense Low-side shunt or in-phase current sense Point of load power supply Point of load power supply Sequencer Sequencer LDO LDO DC/DC DC/DC DC-link voltage DC-link voltage DC-link voltage DC-link voltage 24V aux input (optional) 24V aux input(optional) Multiple supply rails Multiple supply rails ADCs can also be embedded in MCU like in C2000 ADCs can also be embedded in MCU like in C2000 Optional with isolation Optional with isolation Input power protection Input power protection eFuse/Hot swap controllers eFuse/Hot swap controllers Ideal diode/ Oring controller Ideal diode/Oring controller Multi-inverter power stage Multi-inverter power stage Temp Temp Gate drivers Gate drivers N ~ 4-8 Inverters N ~ 4-8 Inverters ….. ….. Gate drivers Gate drivers N 1 N1 Temperature sensor Temperature sensor Temp Temp Temp Temp ….. ….. Self-diagnostics/monitoring Self-diagnostics/monitoring Temp sensor Temp sensor Supervisor Supervisor Watchdog Watchdog Digital processing Digital processing MCUs MCUs Buffer/Driver Buffer/Driver Board-to-board interface Board-to-board interface Level shifter Level shifter Buffer/drivers Buffer/drivers Circuit protection Circuitprotection LVDS LVDS RS485 RS485 Isolation Isolation Multi-inverter current & voltage sensing Multi-inverter current & voltage sensing REF REF ….. ….. Amps Amps ADC ADC Comp Comp Amps Amps ADC ADC Comp Comp N 1 N1 Temp sense interface Temp sense interface REF REF Amp Amp MUX MUX ADC ADC

Technical documentation

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Type Title Date
Technical article Anything but discrete: How to simplify 48-V to 60-V DC-fed three-phase inverter de PDF | HTML 31 Jul 2023
Technical article What is “real-time control” and why do you need it? PDF | HTML 28 Sep 2023
Application note Using the Fast Serial Interface (FSI) With Multiple Devices in an Application (Rev. E) PDF | HTML 25 Jan 2023
Application note Power Multiplexing Using Load Switches and eFuses (Rev. A) 20 Jun 2017
Technical article Getting the most out of your power stage at the full temperature range – part 2 PDF | HTML 18 Jul 2023
White paper Piccolo™ C2000™ MCUs enable the next generation of low-cost, dual-axis servo dri (Rev. A) 13 Jul 2020
White paper Designing the Next Generation of Industrial Drive and Control Systems (Rev. A) 12 Sep 2016
Technical article Getting the most out of your power stage at the full temperature range – part 1 PDF | HTML 08 Aug 2023
Application note Fast Serial Interface (FSI) Skew Compensation 08 Apr 2019
Application note Fast Serial Interface (FSI) Skew Compensation 08 Apr 2019
Application brief Current Sensing in an H-Bridge (Rev. D) PDF | HTML 07 Apr 2023
Application note Performance Analysis of Fast Current Loop (FCL) in Servo 06 Mar 2018

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