DRV8805PWPR

DRV8805PWPR is a Texas Instruments dual full-bridge motor driver. It drives bipolar stepper or DC motors using PWM current regulation, with two independent output bridges (one per channel) and an external sense resistor to set the current limit. It includes protection features such as overcurrent, undervoltage, and thermal shutdown, plus status/flag signals. Control is via simple logic inputs for each bridge (enable/direction/control), making it suitable for 2-phase stepper drive or two independent DC motors. The PWPR suffix denotes TI’s compact packaging variant for board mounting. Typical applications include robotics, CNC, 3D printers, and general motor control in automation. How it works: choose Rsense to set the current limit, feed logic signals to drive the bridges, and rely on the internal PWM chopping to regulate motor current and reduce heat. For detailed electrical specs, pinout, and application circuits, consult the DRV8805PWPR datasheet.

Equivalents of DRV8805PWPR (stepper/motor driver with PWM current regulation) include TI parts like DRV8825, DRV8880, DRV8811 (and DRV8800/8801 family). Cross-vendor options commonly used are Allegro A4988 and A3967. For newer designs, Trinamic TMC2100/2130 offer similar functionality. Note: exact replacement depends on required current, voltage, and microstepping specs.

Key features of DRV8805PWPR (stepper motor driver in PWPR HTSSOP-28):
- Step/Direction control interface with enable input for easy motion control
- Programmable current limit via reference resistor (Imax selectable; supports several amps peak)
- PWM current-regulation with decay control for smooth operation
- Wide supply voltage range suitable for many steppers (roughly 8–46 V)
- Protective features: overcurrent, undervoltage, and overtemperature protection (thermal shutdown)
- Quiet operation through decay-mode control and optimized current regulation
- Diagnostic/status feedback option for fault indication
- RoHS Pb-free PWPR (HTSSOP-28) package for compact board design
Note: Always refer to the specific datasheet for exact electrical specs and pinout.

- Pin count: 16 pins (PWPR package)
- Function: Dual DMOS full-bridge motor driver (two H-bridges) for DC motors or a bipolar stepper. It accepts four logic inputs (IN1–IN4) to drive the two bridges, with enable/sleep controls, and provides four outputs (OUT1–OUT4) to the motor windings. Includes a logic supply, motor supply, current-sense/IS or IREF mechanism for current regulation, and diagnostic/protect features (fault/overcurrent/thermal/undervoltage, etc.).

Manufacturer: Texas Instruments Incorporated (TI).
What kind of company: TI is a global American multinational semiconductor company that designs and manufactures analog and mixed-signal ICs, embedded processors, and other semiconductor products for a wide range of applications. It is a Fortune 500 company headquartered in Dallas, Texas.

Application areas: 2-phase stepper motor control in compact, low-to-mid power systems. Common uses include 3D printers, CNC machines, laser engravers, robotic actuators (pan/tilt, grippers), automated feeders/conveyors, textile/printing equipment, and other consumer/industrial devices requiring precise motion control via Step/Dir interfaces.

28-pin HTSSOP package with an exposed pad (PowerPAD-style).