AC drive power stage module

Products and reference designs

AC drive power stage module

Block diagram

Overview

Our integrated circuits and reference designs help you create an efficient, fully protected power stage module for alternating current (AC) drives. Our analog and embedded processing products enable improved motor control performance and exceed isolation and EMC requirements per IEC standards.

Design requirements

AC drive power stage modules often require:

  • Non-isolated and isolated gate drivers with high common mode transient immunity (CMTI) and built-in protection.
  • Precise current and voltage sense for torque control in sensorless operation.
  • Robust overcurrent protection against short circuit and shoot through events.
  • Efficient non-isolated and isolated power supplies with tight regulation.

Explore applications similar in function and design

Block diagram

Find products and reference designs for your system.

Isolated AC drive power stage

24 V & other rails 24 V & other rails DC LINK DC LINK Safe torque off input Safe torque off input Brake resistor Brake resistor PWM PWM Multiple rails Multiple rails Connection to control module Connection to control module 3 phase AC mains (200-690V) 3 phase AC mains(200-690V) Fan Fan Gate driver supply Gate driver supply Temp sense Temp sense Gate driver supply Gate driver supply Brake control Brake control Brake control Brake control DC LINK DC LINK AC motor AC motor 24 V auxiliary 24 V auxiliary Connection to control module Connection to control module Regen brake power stage Regen brake power stage Isolated gate driver Isolated gate driver Diagnostics / monitoring Diagnostics / monitoring High side smart switch High side smart switch Isolation Isolation DC/DC DC/DC Non-isolated AC/DC power supply Non-isolated AC/DC power supply Rectifier Rectifier 3-phase power stage 3-phase power stage Isolated gate driver Isolated gate driver Logic gates Logic gates IGBT IGBT DC link current and voltage sense DC link current and voltage sense Ref Ref Comp Comp Isolation Isolation Amp Amp Iso Amp IsoAmp Isolated DC/DC main Isolated DC/DC main PWM controller PWM controller REF REF FET FET COMP COMP Temp monitoring Temp monitoring Amp Amp Iso amp Iso amp Comp Comp Input power protection Input power protection EFuse EFuse Oring controller Oring controller Isolated DC/DC hot side Isolated DC/DC hot side PWM controller PWM controller FET FET LDO LDO Non-isolated DC/DC power supply Non-isolated DC/DC power supply DC/DC DC/DC Supervisor sequencer Supervisor sequencer PMIC PMIC LDO LDO Wired interface Wired interface CMOS CMOS CAN CAN LVDS LVDS RS485 RS485 Isolation Isolation DC/DC DC/DC Digital processing Digital processing MCU ASIC FPGA MCUASICFPGA Clocking Clocking CLK distribution CLK distribution FAN power stage FAN power stage Isolation Isolation Switch / LDO Switch / LDO Motor current & voltage sensing Motor current & voltage sensing Fluxgate / hall Fluxgate / hall Iso delta sigma Iso delta sigma Iso Amp Iso Amp LDO LDO Signal conditioning Signal conditioning Ref Ref Amp Amp Comp Comp Logic gates Logic gates ADC ADC

Technical documentation

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Type Title Date
Application note UCC21520, a Universal Isolated Gate Driver with Fast Dynamic Response (Rev. A) PDF | HTML 29 Jun 2018
E-book C2000™ MCU DesignDRIVE Solutions for Industrial Motor Drives 28 Oct 2020
Functional safety information Isolation in AC Motor Drives: Understanding the IEC 61800-5-1 Safety Standard (Rev. A) 28 Jul 2022
White paper Silicon carbide gate drivers -- a disruptive technology in power electronics (Rev. A) 28 Feb 2019
White paper High Voltage Isolation Quality and Reliability for AMC130x 27 Jun 2016
Analog Design Journal Pushing the envelope with high-performance digital-isolation technology (Rev. A) 22 Aug 2018
Product overview Breakthrough InstaSPIN™-FOC motor control technology is here 21 Feb 2013
Technical article Another chance to catch the 2016/2017 Power Supply Design Seminar PDF | HTML 20 Jun 2023
Application note Performance of the Analog PWM Channel in Smart Gate Drivers 17 Jan 2020
Application note Digital Isolator Design Guide (Rev. G) PDF | HTML 13 Sep 2023
White paper Piccolo™ C2000™ MCUs enable the next generation of low-cost, dual-axis servo dri (Rev. A) 13 Jul 2020
Application note Is Your IGBT Gate-Driver Power Supply Optimized 12 Mar 2015
White paper High-voltage reinforced isolation: Definitions and test methodologies 12 Aug 2019
Technical article Interlocking gate drivers for improving the robustness of three-phase inverters PDF | HTML 11 Sep 2023
Application note The RS-485 Design Guide (Rev. D) PDF | HTML 10 May 2022
Application brief Voltage Reference Solutions in Motor Control Drives 10 May 2022
Analog Design Journal Verwendung isolierter Komparatoren zur Fehlererkennung in Elektromotorantrieben PDF | HTML 07 Aug 2024
Analog Design Journal 전기 모터 드라이브의 오류 감지를 위해 절연 콤퍼레이터 사용 PDF | HTML 07 Aug 2024
Analog Design Journal Using isolated comparators for fault detection in electric motor drives PDF | HTML 06 Sep 2022
Analog Design Journal Using isolated comparators for fault detection in electric motor drives PDF | HTML 06 Sep 2022
Application note Analysis of Power Supply Topologies for IGBT Gate Drivers in Industrial Drives 06 Jul 2015
White paper Fully integrated signal and power isolation – applications and benefits 04 Apr 2017
Analog Design Journal Pushing the envelope with high-performance digital-isolation technology 02 Nov 2015
Analog Design Journal Common-mode transient immunity for isolated gate drivers 02 Nov 2015
Analog Design Journal How to use isolation to improve ESD, EFT and surge immunity in industrial system 02 Aug 2017
Application note Sensored Field Oriented Control of 3-Phase Induction Motors 01 Jul 2013
Application note Scalar (V/f) Control of 3-Phase Induction Motors 01 Jul 2013

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