Allegro MicroSystems AHV85003/AHV85043 Isolated SiC GateDriver Chip Set

Introduction

The Allegro MicroSystems AHV85003 and AHV85043 Isolated Silicon Carbide (SiC) GateDriver Chip Set is a cutting-edge solution designed for driving discrete SiC FETs. This chipset is particularly well-suited for applications requiring high efficiency and reliability, such as automotive onboard chargers and solar inverters.

Part Description

The AHV85003/AHV85043 chipset offers a self-powered, isolated gate drive solution that ensures optimal performance across various applications. It is AEC-Q100 Grade 1 qualified, making it suitable for automotive environments. The chipset operates within a wide temperature range of -40°C to 125°C, providing versatility in different operating conditions. Key features include:

• Power-thru chipset that interfaces with external pulse transformers
• Transmits both PWM signals and bias power without the need for high-side bootstrap or external bias supply
• Bipolar drive with selectable regulated positive rail and configurable negative rails
• Over-temperature protection and under-voltage lockout (UVLO) on both primary and secondary supply rails
• High-speed performance with a typical propagation delay of 85ns and a gate charge capability of up to 130nC at 25V

Applications

The AHV85003/AHV85043 chipset can be utilized in a variety of applications, including:

• Automotive onboard chargers (OBC)
• Solar inverters
• High-performance computing (HPC)
• DC-DC converters
• Power conversion systems (PCS)
• Industrial robotics

Industries

This chipset is applicable across several industries, such as:

• Automotive
• Renewable energy (solar)
• Industrial automation
• Data centers
• Consumer electronics

Usage Ideas

Here are three project ideas that leverage the capabilities of the AHV85003/AHV85043 chipset:

1. Solar Inverter Design: Create a solar inverter system that utilizes the chipset to efficiently convert DC power from solar panels to AC power for household use, ensuring optimal performance and reliability.
2. Electric Vehicle Charging Station: Develop an electric vehicle charging station that incorporates the chipset for driving SiC FETs, enhancing the efficiency of the onboard charger and reducing charging times.
3. Industrial Robotics Power Supply: Design a power supply system for industrial robots that employs the AHV85003/AHV85043 chipset to manage power conversion and drive motors, ensuring precise control and high efficiency.

Conclusion

The Allegro MicroSystems AHV85003/AHV85043 Isolated SiC GateDriver Chip Set is a versatile and high-performance solution for driving SiC FETs in various demanding applications. With its robust features and wide operational range, it is an excellent choice for industries looking to enhance efficiency and reliability in power management systems.