Renesas Electronics RAA227063 Smart Gate Driver

Renesas Electronics has introduced the RAA227063 Smart Gate Driver for brushless DC (BLDC) motor applications. Available in a 7 x 7 mm 48-pin QFN package, the device is programmable via an SPI interface, enabling it to support both motors with rotor position sensors and sensorless applications. It also provides programmable gate drive voltage, offering support for N-channel MOSFETs typically used in motor inverter designs, as well as GaN FETs used where high power density is required. The product is scalable to support multiple MCUs, including a wide range of Renesas offerings.

In addition to its flexibility, the three-phase FET driver is highly integrated. It includes a 500 mA buck-boost converter that powers low-voltage logic directly from the battery pack with better power efficiency (90%) compared to traditional LDOs (40%), the company claims. It also includes a 200 mA LDO regulator that can power both an MCU and additional analog peripherals. Three integrated current sense amplifiers with programmable gain enable easy programming for multiple shunt configurations. This high level of integration simplifies design, cuts overall BOM cost, and reduces board space requirements by 30% or more, the company says.