OB6615 BLDC Motor Control IC

The OB6615 is a highly integrated, high-performance and low-cost controller for three-phase brushless DC (BLDC) and permanent-magnet synchronous (PMSM) motors; only a handful of external parts are needed to build a complete drive. It combines a high-performance 1T 8-bit MCU, a three-phase full-bridge driver and a precision 5 V regulator, so the motor-control board is smaller, more flexible and cheaper. The MCU runs from an internal 22.1184 MHz RC oscillator with programmable divider and provides six 14-bit PWM channels with drive-current sampling, three comparators and seven external GPIOs that can be reused as ADC inputs or digital comparators. Protection covers supply undervoltage and overvoltage, high-side driver supply undervoltage, over-temperature and built-in dead time.

Key Features

• 1T 8-bit MCU with internal 22.1184 MHz RC oscillator and programmable divider
• Six 14-bit PWM channels with drive-current sampling
• Three analog comparators and seven external GPIOs multiplexed with ADC inputs
• 16 kB Flash, 1 kB + 256 B SRAM
• Integrated three-phase full-bridge driver and precision 5 V regulator
• Supply UVLO/OVP, high-side driver UVLO, over-temperature and built-in dead time

Applications

• RC model ESCs
• BLDC/PMSM drives
• Variable-frequency drives

Part Numbers

• OB6615FL

Product family: On-Bright official page