High-voltage BLDC motor driver IC product series, do you know?

What is the high-voltage BLDC motor driver IC product family? What does it do? San Jose, California, USA, November 13, 2018 – Power Integrations (Nasdaq), a well-known company deeply involved in the field of high-voltage integrated circuits for energy-efficient power conversion Codename POWI) today released the BridgeSwitch™ integrated half-bridge (IHB) motor driver IC product series. BridgeSwitch IC integrates two performance-enhanced FREDFETs (field effect transistors with fast recovery epitaxial diodes) for the upper and lower transistors of the half-bridge circuit, and has a lossless current detection function, which can make the power within 300 W The inverter conversion efficiency in brushless DC (BLDC) motor driver applications reaches 98.5%.

The superior efficiency and distributed cooling approach provided by IHB drives eliminate the need for heat sinks, helping to reduce system cost and weight. Featuring integrated lossless current sensing, bus voltage sensing and system-level over-temperature sensing, this device family is ideally suited for BLDC motor drive applications in home appliances. BridgeSwitch devices are suitable for refrigerator compressors, HVAC system fans, and other household and light commercial pumps, fans, and blowers.

The 600 V FREDFET used in the BridgeSwitch IC integrates a fast ultra-soft recovery body diode. This helps significantly reduce switching losses and noise generation, thereby simplifying system-level EMC design. The new high-voltage self-powered half-bridge motor driver IC also has built-in device protection and system monitoring features, as well as a reliable single-wire interface for operating status updates between the motor microprocessor and up to three BridgeSwitch devices. communicate between them. The high-side and low-side current limits of each BridgeSwitch device can be individually programmed, eliminating the need for a microprocessor and associated peripheral circuitry to provide protection for the entire system in the event of an open or short circuit in the motor winding. The integrated lossless current monitoring feature provides hardware-based motor fault protection, helping to simplify motor fault protection mechanisms to meet IEC60335-1 and IEC60730-1 requirements.

Cristian Ionescu-Catrina, senior product marketing manager, said: “We re-examined the challenges faced by the rapidly growing BLDC market and increasingly stringent energy-saving standards and regulations around the world, and launched a product that can achieve energy and space savings while also Innovative solution to streamline BOM. Not only does the new solution easily comply with safety standards, it also simplifies the circuit and shortens development time.”

Other features of the new device include PWM operating frequencies up to 20 kHz, while also providing a small-signal output that reflects accurate, real-time FREDFET drain current magnitude, which mirrors the forward current in the motor winding. Safety features include two-stage device over-temperature detection, low-side and high-side cycle-by-cycle current limiting, and DC bus overvoltage and undervoltage protection and reporting.

The new device is compatible with all common control algorithms – Field Oriented Control (FOC), Sinusoidal Control and Trapezoidal Control Algorithms offering sensored and sensorless detection. See Reference Designs DER-654, DER-653 and DER-749. BridgeSwitch is packaged in a low-profile surface-mount InSOP-24C package with a creepage distance of greater than 3.2 mm, allowing PCB heat dissipation through two exposed pads. The above is the analysis of the high-voltage BLDC motor driver IC product series. I hope it can be helpful to everyone.