DC 5–12V 30A Dual Channel H-Bridge Motor Driver Module
DC 5–12V 30A Dual Channel H-Bridge Motor Driver Module
DC 5–12V 30A Dual Channel H-Bridge Motor Driver Board
Take precise control of your DC motors with this high-performance Dual Channel H-Bridge Motor Driver Module (Model: DBH-12V). Engineered for coreless motors, standard DC motors, and semiconductor cooling applications, this compact board delivers reliable bidirectional motor control with PWM speed regulation — all in a package measuring just 7.2 × 5.7 × 2 cm.
Why Choose This Motor Driver Board?
- Ultra-Low Internal Resistance: MOSFET channels rated at just 12 mΩ per channel, minimising energy loss and heat generation during operation.
- High-Speed 200 kHz Switching: Standard coreless motors typically require 60 kHz — this board's 200 kHz capability gives you headroom to spare for smooth, flicker-free control.
- Wide Voltage Compatibility: Operates on a single supply from 3 V up to 14.6 V maximum, compatible with 3.3 V, 5 V, and 12 V logic levels out of the box.
- Up to 30 A Per Channel: Handles high-current loads and short-term overload surges without flinching.
- Hardware Brake Function: Built-in hardware brake and energy feedback via the MOSFET driver chip enables rapid motor stops — ideal for robotics and RC vehicles.
- Current Detection Circuit: Onboard current sampling output (CT) allows single-chip microcontrollers to monitor and implement closed-loop PID current limiting. Formula: CT Output Voltage (V) = Current (A) × 0.155
- Heat Sink Included: Upgraded design features an attached heat sink for improved thermal management and long-term reliability.
- Dead-Band Control: Minimises MOSFET switching losses and maximises power supply efficiency.
Technical Specifications
| Model | DBH-12V |
| Rated Voltage | 5–12 V DC (14.6 V Maximum) |
| Operating Current | 0 A – 30 A per channel (maximum) |
| Internal Resistance (per channel) | 12 mΩ |
| PWM Switching Frequency | 200 kHz |
| PWM Duty Cycle | 0% – 98% |
| Recommended PWM Frequency | Normal Motor: 16 kHz | Coreless Motor: 80 kHz | Semiconductor Cooling: 500 Hz – 80 kHz |
| Input Logic Levels | Low: 0–5 V | High: 2.5–13 V (3.3 V / 5 V / 12 V compatible) |
| Dimensions | 7.2 × 5.7 × 2 cm / 2.83 × 2.24 × 0.78 in |
| Battery Included | No |
| Country of Origin | Made in Mainland China |
Ideal Applications
- RC and toy car motor control
- Robotics and automation projects
- Semiconductor / Peltier cooling module control
- Electromagnetic deflection coil drivers
- DIY electronics and maker projects requiring bidirectional motor control
Important Usage Notes
- Do not exceed 98% PWM duty cycle — the board may become unstable or sustain damage.
- Always select the PWM frequency appropriate to your load type (see recommended frequencies above).
- New and older product variants may be shipped interchangeably; functionality remains equivalent.
Package Contents
- 1 × DC 5–12V Dual Channel H-Bridge Motor Driver Module (DBH-12V)
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Frequently Asked Questions
Q: What types of motors are compatible with the DBH-12V dual channel H-bridge motor driver module?
A: This motor driver module is compatible with standard DC motors, coreless motors, semiconductor/Peltier cooling modules, and electromagnetic deflection coils. It supports forward and reverse direction control as well as PWM speed control for all these load types.
Q: What PWM frequency should I use with this H-bridge motor driver board?
A: The recommended PWM frequency depends on your load: use approximately 16 kHz for normal DC motors, 80 kHz for coreless motors, and between 500 Hz and 80 kHz for semiconductor cooling applications. The board's maximum switching frequency is 200 kHz, well above what most coreless motors require.
Q: Can this motor driver module work with a 3.3 V microcontroller such as an Arduino or Raspberry Pi?
A: Yes. The input logic is compatible with 3.3 V, 5 V, and 12 V signal levels, making it easy to integrate with most popular microcontroller platforms including Arduino, Raspberry Pi, and STM32 boards.
Q: How does the current detection (CT) output work on this motor driver board?
A: The onboard current sampling circuit provides an analog voltage output proportional to the motor current. The relationship is: CT Output Voltage (V) = Current (A) × 0.155. This signal can be fed into a microcontroller's ADC pin to implement current-limiting or closed-loop PID motor control.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.