🔹 BTS7960 High-Current Half-Bridge Motor Driver Module (43A Peak)
A robust DC motor driver module based on the Infineon BTS7960 IC, designed for high-current bidirectional control of a single DC motor, solenoid, or other inductive load. It combines two BTS7960 chips to form a complete H-bridge, offering high efficiency and integrated protection features.
✅ Specifications:
Driver IC: BTS7960 (2x for full H-bridge)
Motor Channels: 1 (Bidirectional)
Operating Voltage: 6V – 27V DC
Continuous Current: Up to 20A per channel (with proper heatsinking)
Peak Current: 43A (short duration)
Control Logic: PWM & Direction (Two signal inputs: RPWM, LPWM, or PWM + DIR depending on module variant)
Control Voltage: 3.3V – 5V (TTL/CMOS compatible)
PWM Frequency: Up to 25 kHz (recommended)
Efficiency: High (using MOSFETs, low RDS(on))
Protection Features:
Over-current protection
Over-temperature shutdown
Under-voltage lockout
Short-circuit protection
Status Indicators: Power (LED), Fault indicators
Module Size: ~ 55mm x 55mm (typical)
⚙️ Key Features:
High Current Capability: Can drive large motors (e.g., 12V/24V scooter, wheelchair, or industrial motors) with ease.
Integrated Protection: Built-in safeguards protect both the driver and your motor from common fault conditions.
Efficient Operation: Low on-resistance MOSFETs minimize heat generation compared to older linear drivers (like L298N).
Easy Interface: Simple PWM and direction control compatible with Arduino, Raspberry Pi (via level shifter), and other microcontrollers.
Heatsink Included: Most modules come with a large, finned aluminum heatsink for sustained high-current operation.
📦 Typical Applications:
High-Power Robotics: Driving large drive wheels or robotic arms.
Electric Vehicles: Small scooters, go-karts, or custom EVs.
Industrial Automation: Controlling conveyor belts, actuators, or heavy-duty solenoids.
DIY CNC & 3D Printer Upgrades: As a high-power extruder or axis driver.
High-Torque Hobby Projects: RC boats, rock crawlers, or winches.
🔧 Wiring & Control (Standard PWM + DIR Module):
Power Connections:
VM / Motor Power: Connect to your high-current battery (6V-27V).
VCC / Logic Power: Connect to 5V from your microcontroller (powers internal logic).
GND: Connect all grounds together (battery, module, microcontroller).
Motor Output: Connect your DC motor between the two output terminals (OUT1 & OUT2).
Control Inputs (to microcontroller):
RPWM: Connect to a PWM-capable pin for “Right” or “Forward” speed.
LPWM: Connect to a PWM-capable pin for “Left” or “Reverse” speed.
(For PWM+DIR modules: PWM pin for speed, DIR pin for direction).
Enable Pin (if present): Connect to a digital pin to enable/disable the driver (safety feature).
Basic Arduino Code Logic:
int LPWM = 10; // PWM pin for reverse
pinMode(RPWM, OUTPUT);
pinMode(LPWM, OUTPUT);
}
void loop() {
// Motor forward at 50% speed
analogWrite(RPWM, 128); // 0-255
analogWrite(LPWM, 0);
delay(2000);
// Motor reverse at 75% speed
analogWrite(RPWM, 0);
analogWrite(LPWM, 192);
delay(2000);
// Brake/Stop
analogWrite(RPWM, 0);
analogWrite(LPWM, 0);
delay(2000);
}
}
⚠️ Critical Usage & Safety Warnings:
HEATSINK & COOLING IS MANDATORY: For any significant current (>5A), ensure the module’s heatsink is properly attached and consider active cooling (fan). Thermal shutdown will trigger if overheated.
Power Supply Must Handle Current: Your battery or power supply must be rated for the peak current your motor may draw. Use thick gauge wires (e.g., 12AWG or thicker for >20A).
Flyback Diodes: Protection diodes are integrated, but for highly inductive loads, adding external Schottky diodes is still good practice.
Logic Level Compatibility: Ensure your microcontroller’s logic HIGH (3.3V or 5V) meets the module’s input threshold. Some 3.3V boards may need a level shifter.
Start Slow: Always begin testing at low PWM values and low voltage to prevent sudden high-current surges.
Isolate Logic & Motor Power: Use separate power supplies or filters to prevent motor noise from resetting your microcontroller.
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