STMicroelectronics AN2316 AC Chopper Driver Application Note

About this manual

This document presents an improved circuit solution for driving AC asynchronous monophase motors, such as those found in refrigerators, fans, and pumps. The solution addresses electromagnetic compatibility (EMC) issues and harmonic distortion common in traditional TRIAC-based phase angle control methods. It introduces a two-switch drive topology that regulates voltage and current more efficiently.

What's inside

• Circuit Description
• EMC Precompliance Measurement
• Safety and Operating Instructions
• Software Description
• Peripheral Initialization
• Firmware Configuration
• Development Tools
• Library Source Code
• Revision history

Specifications

Frequently asked questions

What types of motors does this solution support?

It embraces all types of AC asynchronous monophase motor applications, including refrigerators, hydraulic pumps, fans, and lamps.

What is the main advantage over TRIAC solutions?

The solution solves third harmonic problems and reduces excessive harmonic distortion which reduces system efficiency.