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DRV8824PWPR

Dual H-bridge 2.5A, 8.2-45V, 1/16 microstep stepper driver, OCP, HTSSOP-28

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Pieza del fabricante：

DRV8824PWPR

Paquete：

HTSSOP-28 with PowerPAD (9.70 x 4.40 x 1.00 mm)

Marca：
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Compromiso de calidad
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Descripción

Productos

The DRV8824PWPR from Texas Instruments is a dual H-bridge motor driver for one bipolar stepper motor or two DC motors. With 2.5A per bridge, 8.2-45V supply, and 1/16 microstepping, it provides overcurrent and thermal protection in a 28-pin HTSSOP package.

Especificaciones

Motor Type Bipolar stepper (1) or DC motor (2)
Bridge Configuration Dual H-bridge
Corriente de salida 2.5 A per bridge (max)
Tensión de alimentación 8.2 V to 45 V
Microstepping Up to 1/16 step
RDS(on) per FET 0.35 Ohm (HS + LS = 0.7 Ohm total)
Control Interface STEP/DIR, 3-bit MSTEP
Protection OCP, thermal shutdown, UVLO, fault output
Sleep Mode Yes (nSLEEP pin)
Temperatura de funcionamiento -40°C to +125°C
Paquete HTSSOP-28 with PowerPAD

Características

  • Dual H-bridge driver at 2.5A/bridge with 8.2-45V supply for stepper or DC motors
  • 1/16 microstepping for smooth, low-vibration stepper motor operation

Aplicaciones

  • Bipolar stepper motor drive in 3D printers and CNC machines
  • Industrial automation and robotics motor control

The DRV8824PWPR from Texas Instruments is a dual H-bridge motor driver capable of driving one bipolar stepper motor or two DC motors. Each H-bridge can deliver up to 2.5A of output current from an 8.2V to 45V supply. The device supports up to 1/16 microstepping for smooth, low-vibration stepper motor operation. The internal MOSFETs have 0.35 Ohm RDS(on) per FET (HS+LS = 0.7 Ohm total), providing efficient motor drive. A simple STEP/DIR interface with 3-bit microstep resolution select (M0, M1, M2) allows easy microcontroller control. Built-in protection includes overcurrent protection (OCP) with auto-retry, thermal shutdown, undervoltage lockout (UVLO), and a fault output pin (nFAULT). The nSLEEP pin reduces supply current to less than 50uA in sleep mode. The HTSSOP-28 package with exposed PowerPAD provides excellent thermal performance for continuous motor operation.

The DRV8824PWPR uses two independent H-bridge power stages for motor drive. (1) H-Bridge: Each bridge consists of four N-channel MOSFETs in an H configuration. By controlling which diagonal pair is turned on, current flows through the motor winding in either direction. PWM chopping regulates the winding current to the desired level. (2) Microstepping: The STEP pin advances the internal indexer by one microstep. The microstep size is set by M0/M1/M2 pins: full, 1/2, 1/4, 1/8, or 1/16 step. The indexer generates sine/cosine current references for the two bridges, producing smooth current waveforms at each microstep. (3) Current Regulation: An internal sense resistor or external sense resistor monitors the winding current. When the current exceeds the set threshold, the bridge enters a slow or mixed decay mode until the next PWM cycle. (4) Protection: OCP triggers when the current exceeds approximately 3.5A. Thermal shutdown disables both bridges when the die temperature exceeds 150C. The nFAULT pin is driven low during any fault condition.

Pin Nombre Función
1-2 AOUT1/AOUT2 Bridge A outputs (motor winding A)
3 BOUT1 Bridge B output 1
4 BOUT2 Bridge B output 2 (motor winding B)
5 nSLEEP Sleep mode (high=on, low=sleep)
6 STEP Step input (rising edge advances)
7 DIR Direction input
8-10 M0/M1/M2 Microstep resolution select
11 nFAULT Fault output (active low, open drain)
12-15 VDD/GND Logic supply and ground
  • Bipolar stepper motor drive at 2.5A with 1/16 microstep in 3D printers
  • Industrial automation stepper and DC motor control at 8-45V
  • CNC and robotics motor drive with overcurrent and thermal protection
Fabricante Número de pieza Paquete Notas
TI DRV8825PWPR HTSSOP-28 Pin-compatible, 1.5A, lower current
TI DRV8834PWPR HTSSOP-24 11V max, lower voltage
Allegro A4988SETTR-T QFN-28 2A, 1/16 step, similar
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