Servo drive power supply module

Products and reference designs

Servo drive power supply module

Block diagram

Overview

Our integrated circuits and reference designs help create reliable, efficient power supply modules to generate common DC bus for powering servo drives. Our analog and embedded processing products enable uni- or bi-directional power transfer and exceed isolation and EMC requirements per IEC standards.

Design requirements

Servo drive power supply modules often require:

  • Precise grid voltage sensing to enable synchronization and power factor control.
  • High-bandwidth, precise current sense to meet current harmonics per IEEE519.
  • Accurate DC voltage and current sensing for tight regulation and protection.
  • Efficient and reliable performance under a variety of operating conditions.

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Block diagram

Find products and reference designs for your system.

Servo drive active frontend

LCL filter LCL filter 24 V auxiliary 24 V auxiliary 24 V & others 24 V & others 3-phase AC mains (100-690 V) 3-phase AC mains (100-690 V) Connection to control module Connection to control module Multiple rails Multiple rails DC link output DC link output Fan Fan To relay control To relay control From digital processing From digital processing NTC from 3-phase power stage NTC from 3-phase power stage To digital processing To digital processing To power stage 3-phase To power stage 3-phase From grid voltage sensing From grid voltage sensing From digital processing From digital processing Input power protection Input power protection eFuse eFuse ORing controller ORing controller FET FET Non-isolated DC/DC power supply Non-isolated DC/DC power supply DC/DC DC/DC Supervisor sequencer Supervisor sequencer PMIC PMIC LDO LDO Isolated AC/DC Isolated AC/DC PWM controller PWM controller Rectifier Rectifier Ref Ref Comp Comp Isolated DC/DC hot side Isolated DC/DC hot side FET FET LDO LDO Ref Ref PWM controller PWM controller 3-phase power stage 3-phase power stage IGBT / SiC IGBT / SiC Isolated gate driver Isolated gate driver Logic gates Logic gates NTC NTC Grid voltage sense Grid voltage sense MCU MCU Isolator Isolator Ref Ref ADC ADC Amp Amp Iso amp Iso amp LDO LDO Current sense Current sense Iso delta sigma Iso delta sigma Iso amp Isoamp LDO LDO Fluxgate/ hall Fluxgate/ hall Signal conditioning Signal conditioning Comp Comp Ref Ref Logic gates Logic gates Amp Amp ADC ADC DC link current & voltage sense DC link current & voltage sense Iso delta sigma Iso delta sigma Iso amp Iso amp Temp monitoring Temp monitoring Iso amp Iso amp Wired interface Wired interface CMOS CMOS CAN CAN LVDS LVDS RS485 RS485 Isolation Isolation Clocking Clocking CLK distribution CLK distribution Fan control Fan control Load switch Load switch LDO LDO Digital processing Digital processing MCU ASIC FPGA MCUASICFPGA Relay control Relay control Relay driver Relay driver Relay Relay

Technical documentation

View all 5
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Type Title Date
E-book Ein Techniker-Leitfaden für Industrieroboter-Designs 28 Oct 2020
E-book E-book: An engineer’s guide to industrial robot designs 16 Nov 2020
Application note Is Your IGBT Gate-Driver Power Supply Optimized 12 Mar 2015
Application brief Voltage Reference Solutions in Motor Control Drives 10 May 2022
Application note Analysis of Power Supply Topologies for IGBT Gate Drivers in Industrial Drives 06 Jul 2015

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