What chip does bidirectional brushless power call?

What chip does bidirectional brushless power call?

In recent years, with the widespread application of brushless motors in industrial automation, drones, electric vehicles and other fields, the demand for bidirectional brushless ESCs (Electronic Speed Controllers, ESCs) has also been growing. Choosing the right chip is the key to designing an efficient and stable bidirectional brushless ESC. This article will combine the hot topics and hot content on the Internet in the past 10 days to analyze the commonly used chip solutions for two-way brushless ESCs, and provide structured data for reference.

1. Core chip requirements for bidirectional brushless ESCs

Bidirectional brushless ESCs need to realize functions such as forward and reverse control, speed regulation, and energy feedback of the motor, so they have higher performance requirements for the chip. The following are the core requirements:

2. Recommendations for popular bidirectional brushless ESC chips

Based on recent industry discussions and technology trends, the following chips are widely used in bidirectional brushless ESC designs:

3. Comparison of key parameters for chip selection

The following is a comparison of popular chip parameters recently discussed by the engineer community:

4. Industry trends and latest technologies

According to the technical trends in the past 10 days, the two-way brushless ESC chip shows the following development trends:

1.Highly integrated solutions are favored: More and more designs use single-chip solutions that integrate MCU, driver and power management, such as the STSPIN32 series.

2.FOC control becomes mainstream: Field-oriented control (FOC) technology is widely used in new generation ESCs due to its high efficiency and low noise characteristics. Infineon and other manufacturers have launched dedicated FOC control chips.

3.Growing demand for wide voltage designs: With the development of applications such as power tools and electric vehicles, chips that support a wide voltage range of 8-60V (such as TI's DRV series) have attracted much attention.

4.Enhanced intelligent diagnostic functions: The latest chips generally integrate fault diagnosis interfaces and can feedback operating status through UART or CAN bus.

5. Design suggestions

1. For small and medium power applications (such as drones, robots), it is recommended to use TI's DRV8323 or ST's STSPIN32F0, which are cost-effective and easy to develop.

2. Industrial-grade applications need to consider a wider temperature range and stronger protection functions, so Microchip's MCP8024 series can be selected.

3. For high-performance applications that require energy feedback, it is recommended to use a dedicated chip that supports FOC control, such as Infineon's solution.

4. In the early stage of development, you can use the evaluation boards provided by various manufacturers to quickly verify solutions. TI, ST, etc. all provide complete development kits.

With the advancement of technology, two-way brushless ESC chips are developing towards higher integration and more intelligence. Designers should choose the most suitable chip solution based on specific application scenarios, balancing performance, cost and development difficulty.