The MOTIX™ 6EDL71xx are three-phase smart gate drivers for three-phase brushless DC motor or permanent magnet synchronous motor drive applications. Designers can exploit the SPI interface bus to provide both detailed fault reporting and flexible parameter settings such as gain options for current sense amplifiers and slew rate control of the gate drivers.
Overview
The MOTIX™ 6EDL71xx are the three-phase smart gate drivers for three-phase brushless DC (BLDC) motor or permanent magnet synchronous motor (PMSM) drive applications. They have an SPI interface bus, which provides both detailed fault reporting and flexible parameter settings such as gain options for current sense (CS) amplifiers, slew rate control of the gate drivers, and various protection features on gate driver voltage.
Control of the drain-source rise and fall times is one of the most important parameters for optimizing drive systems, affecting critical factors such as switching losses, dead-time optimization and drain voltage ringing that can lead to possible MOSFET avalanching. Correct configuration of the gate drive also helps to minimize EMI emissions.
The 6EDL71xx are capable of controlling the slew rate of the driving signal to control the rise and fall slew rates of the drain-to-source voltage by adjusting the gate drive sink and source currents during different time segments during the switch-on and switch-off processes. This permits the designer to eliminate diode resistor networks commonly used in gate drive circuits. In most cases, gate resistors can be removed altogether, reducing component count and at the same time simplifying and allowing further optimization of the circuit layout.
Key Takeaways
- Learn how Infineon's MOTIX™ motor control gate drivers reduce inverter power losses and the risk of avalanche
- Explore opportunities for flexible EMI optimization
- Examine paths to potentially lower MOSFET BV
- Discover how these smart gate drivers drive down costs with a lower bill of materials
- Optimize circuit layout with a compact inverter PCB design for better system integration
Speakers
Walid Jarmakani works for the LV Motor Driver and Controller product segment (in other words, battery-powered applications) at Infineon. He joined the Infineon Product Marketing team in 2018 and then transitioned to the position of Field Application Engineer (FAE) to support MOSFET, driver, sensor and controller business growth. Previously, he spent 17 years as an FAE with Semtech and Intersil. He started his career in 1994 with International Rectifier as a rotational engineer before he moved on to the role of application engineer. He received his BSEE degree from UCLA.
Harish Subramanya focuses on developing solutions for gate drives in battery powered motor drives applications. He joined Cypress Semiconductors (now Infineon Technologies) in 2019 and holds a Master's degree in electrical engineering from NIT Warangal, India.