IPM Interface Reference Design for Inverters Using Single Package Six Channel Digital Isolator
Description
This reference design realizes a three-phase inverter subsystem for AC inverter drives and servo drives using an intelligent power module (IPM). Reinforced isolation is present between the microcontroller (MCU) and the IPM-based power stage. The PWM signals are isolated using the single-package: six-channel digital isolator: ISO7760. In-phase current sensing is done in two motor phases using the isolated delta-sigma modulator: AMC1303M0520. DC bus voltage feedback and module temperature feedback is provided to the MCU through isolated delta-sigma modulators: AMC1303M2520. This reference design is controlled by a C2000™ MCU.
Features
- Power stage suited for 200-V to 480-V AC drives with continuous current rating up to 5 Arms and peak current rating of 10 Apk using a 1200-V: 15-A IPMReinforced isolation between controller and power stageSingle-package reinforced isolator ISO7760 for six PWM signals reduces BOM count and PCB footprint when compared to multiple optoisolatorsExcellent propagation delay matching of isolator channels allows for smaller dead time: resulting in reduced inverter output distortions and better efficiencyPWM isolator with very low current consumption and self heating allows powering from 15-V IPM supply with small footprint LDOIEC61800-3 EMC immunity for EFT up to 4 kV on motor power cable
Applications
- AC drive power stage module
- Servo drive power stage module
- Servo drive power supply module
- Traction inverter motor control
- Surgical equipment
- Robot teach pendant (HMI)
- Robot I/O module
- Robot sensor module
- Mobile robot sensor
- Robot servo drive
- Robot safety module
- Mobile robot safety module
Product Categories
- Isolation