Texas Instruments Controladores de motores integrados DRV8x de Texas Instruments
Los controladores de motor DRV8x de Texas Instruments están concebidos para controlar máquinas electromagnéticas como motores con y sin escobillas, y motores de pasos u otros accionadores electromecánicos. La familia de controladores de motores integrados DRV8x de Texas Instruments permite a los diseñadores accionar de forma rápida y sencilla sus motores, reduciendo el tiempo de salida al mercado y simplificando el diseño en gran medida. Al integrar la circuitería del accionamiento de compuertas, amplificadores de detección, FETS, interfaces de control de normas del sector, se reducirán los algoritmos de control, la complejidad de los diseños, el espacio en la placa y el tiempo necesario para accionar un motor. Con un sistema de protección en el chip, se logra un gran nivel de protección contra sobrecorriente, aumento de temperatura, corriente de saturación y tensión insuficiente para la familia DRV8x.
Características
- DRV83xx/DRV84xx Benefits
- Integrated pre-drive and power stage capable of up to 24A peak current with 50V supply rail
- Extensive on-chip protection including over current, over temperature, under voltage, and short circuit protection
- Direct access PWM inputs to the bridge allow for custom commutation and control software from the host processor
- DRV87xx Features
- Pulse Width Modulation (PWM) Motor Driver
- Drives External N-Channel MOSFETs
- PWM Control Interface for Dual DC Motors
- Supports 100% PWM Duty Cycle
- 8V to 52V Operating Supply Voltage Range
- Adjustable Gate Drive (4 Levels)
- 50mA to 200mA Source Current
- 100mA to 400mA Sink Current
- Integrated PWM Current Regulation
- Flexible Decay Modes
- Automatic Mixed Decay Mode
- Slow Decay
- Fast Decay
- Mixed Decay (Adjustable Percent Fast)
- Highly Configurable SPI
- Torque DAC to Digitally Scale Current
- Low-Current Sleep Mode (65µA)
- 5V, 10mA LDO Regulator
- Thermally-Enhanced Surface-Mount Package
- 38-Pin HTSSOP (PowerPAD)
- Protection Features
- VM Undervoltage Lockout (UVLO)
- Gate Driver Fault (PDF)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Fault Condition Indication Pin (nFAULT)
- Fault Diagnostics through SPI
- DRV88xx Benefits
- Integrated pre-drive and power stage capable of 5A peak current with 45V supply rails
- Extensive on-chip protection including over current, over temperature, under voltage, and short circuit protection
- Integrated control logic for current regulation, PWM generation, and micro-stepping indexer
- Simple to use control interface requiring only a few pins to control (step / direction for stepper motors and phase / enable for DC motors)
Aplicaciones
- Motor Control
- AC Induction Motors (ACIM)
- Brushed DC Motors
- Brushless DC Motors (BLDC)
- Permanent Magnet Synchronous Motors (PMSM)
- Stepper Motors
Vídeos
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