Features
- Operating power supply voltage:
- VBRIDGE: 6V to 65V (78V abs max)
- Voltage max (VM): 6V to 60V (65V abs max)
- Operating ambient temperature: -40 °C to 105 °C
- Supply current
- MCU, VDD current:
HS mode, fIH = 32MHz: 5.2mA - Smart gate driver:
Operating Mode: 2mA, Sleep Mode: 28μA
- MCU, VDD current:
- 8mm x 8mm 64 Ld QFN package (0.4mm pitch)
- 3-Phase drive for BLDC application
- Fully integrated power supply architecture
- Three differential amplifiers with configurable gain for current sensing (5, 10, 20, 40V/V)
- BEMF sense amplifier for sensorless motor drive
- Three comparators for hall sensor motor drive
- Extensive protection functions
- CPU: 16-bit CISC CPU
- CPU operating voltage: 3.3V to 5V
- Code flash: 64KB, Data flash: 4KB, RAM: 5.5KB
- Serial array unit: 2 units (CSI: 2ch, UART: 1ch, I2C: 2ch)
- GPIO: 29 channels - I/O: 27ch, Input: 2ch
- Timers
- Timer RJ/RG – 16-bit, 1ch/1ch
- Timer RD for motor control – 16-bit, 2ch
- Timer RX – 16-bit, 1ch
- 10-bit resolution A/D converter input: 11ch
- External interrupt input: 10ch
Description
The RAJ306102 is a general-purpose motor control IC for 3-phase brushless DC (BLDC) motor applications. RAJ306102 combines a smart gate driver (RAA306012) and MCU (RL78/G1F) in a single package. The smart gate driver includes three half-bridge gate drivers, a buck switching regulator and a charge pump for the gate drive voltage, two LDOs for the internal analog and logic circuitry and MCU (3.3V to 5V adjustable), three accurate differential amplifiers, a BEMF sense amplifier, three general purpose comparators, and extensive protection functions.
The three half-bridge gate drivers are capable of driving up to three N-channel MOSFET bridges and support bridge voltages from 6V to 65V. Each gate driver supports up to 0.64A source and 1.28A sink peak drive current with adjustable drive strength control. Adaptive and adjustable dead times are implemented to ensure robustness and flexibility. The active gate holding mechanism prevents Miller effect induced cross-conduction and further enhances robustness.
Three accurate differential amplifiers with adjustable gain support ground-side shunt current sensing for each bridge. The device can support both BLDC sensor/sensorless motor drive by the three general-purpose comparators or a BEMF sense amplifier.
Applications
- Cordless power tools
- Outdoor power equipment
- Vacuum cleaners
- Fans
- Pumps
- Robotics
- Medical equipment
Renesas Boards & Kits
RAA306012 3-Phase Smart Gate Driver Solution Starter Kit
The RAA306012 Renesas Solution Starter Kit (RTK0EM00F0S00020BJ) is used to evaluate a BLDC motor system using the RAA306012 3-phase smart gate driver and RX13T and RL78/G1F microcontrollers (MCUs). It consists of an evaluation board with the RAA306012 mounted, a control board with the RX13T... Read More
