Overview
The ATA6847L is a Three-Phase Brushless Motor Gate Driver System Basis Chip (SBC) for brushless motor control, designed using advanced SOI technology. Through six dedicated parallel inputs, the gate driver units (GDU) can be controlled independently, supporting duty cycle operations from 0% to 100%, due to the implementation of two charge pumps, for low and high-side gate drives. In addition, the circuit provides 5V and 3.3V low dropout voltage regulators, three current-sensing operational amplifiers, an integrated Back-EMF detection module, Motor Line diagnostic block and a window watchdog. The microcontroller controls the ATA6847 using an SPI interface. Furthermore, it contains a LIN for interfacing with other systems. In combination with a DIM board microcontroller (included) and six discrete power MOSFETs, the SBC forms a brushless DC motor control unit.
• Input operating voltage range: 4.9V to 32.5V
• Maximum of 10/27Ω of gate drive sink/source resistance for external N-Channel MOSFETs and programmable LS/HS slew rate control: 12.5%, 25%, 50%, 100%
• Drives up to a 35A RMS BLDC motor
• Three programmable gain/offset current sense amplifiers
• ON/OFF push button (RUN)
• Reset push button (RST)
• Spare user-programmable push button
• Wake-up push button
• PWM signal LED indicators
• Fault signal LED indicator
• PICkit™ debugger interface
• Speed control potentiometer
• LIN connector interface
• Terminal block for 3.3V and 5V Hall-effect sensors
• UVLO, OVLO and DUVLO protections
• Programmable external MOSFET short circuit protection 125 mV to 1.75V
• Programmable PWM dead-time protection 100 ns to 6.3 µs (100 ns step)
• Thermal shutdown protection
• Programmable timing filters for current and voltages
• USB connector interface
• Optional mikroE, Xplained connectors
• Complete “C” source code (provided on the Motor Driver Evaluation Board webpage).
Documentation
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Document Category
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| AN6285 - ATA6847L Connections to dsPIC33CK256MP205 Motor Control DIM | Application Notes | Link | PDF | HTML | |
| ATA6847L Connections to dsPIC33CK256MP508 Motor Control DIM | Application Notes | Link | Download | |
| AN6302 - ATA6847L Connections to SAM C21 Motor Control DIM | Application Notes | Link | PDF | HTML | |
| dsPIC33CK256MP205 MC DIM (EV53A92A) Design Files | Board Design Files | Download | ||
| dsPIC33CK256MP205 MC DIM (EV53A92A) BOM | Board Design Files | Download | ||
| dsPIC33CK256MP205 MC DIM (EV53A92A) Gerber | Board Design Files | Download | ||
| dsPIC33CK256MP205 MC DIM (EV53A92A) Schematic | Board Design Files | Download | ||
| ATA6847 QFN48 Eval. Board DIM (EV92R69A) Design Files | Board Design Files | Download | ||
| ATA6847 QFN48 Eval. Board DIM (EV92R69A) BOM | Board Design Files | Download | ||
| ATA6847 QFN48 Eval. Board DIM (EV92R69A) Gerbers | Board Design Files | Download | ||
| ATA6847 QFN48 Eval. Board DIM (EV92R69A) Schematic | Board Design Files | Download | ||
| ATA6847L DIM Evaluation Kit (EV94U98A) Firmware | Software Libraries and Firmware | Download | ||
| EV94U98A China RoHS Certificate | Certifications | Download | ||
| EV94U98A EU REACH Statement | Certifications | Download | ||
| EV94U98A UK Declaration of Conformity | Certifications | Download | ||
| EV94U98A EU Declaration of Conformity | Certifications | Download | ||
| ATA6847L QFN48 BLDC Motor Driver Evaluation Board User Guide | User Guides | Download |