QD75MH2 MITSUBISHI

QD75MH2 MITSUBISHI Gate Module

Product  Description：

The module is typically a compact, integrated unit that includes a built-in isolated DC-DC converter and sophisticated drive circuitry. It is engineered to translate low-level PWM (Pulse Width Modulation) signals into the high-voltage, high-current pulses required to rapidly charge and discharge the gate capacitance of power modules. Modern versions are specifically optimized for "Next Generation" modules like the LV100 or SiC series, featuring low parasitic inductance and enhanced noise immunity to handle the high $dV/dt$ rates associated with fast switching speeds.

Technical Parameters

• Supply Voltage: Typically operates on a 15V to 24V DC input.

• Gate Voltage Range: Output voltages usually range from +15V for turn-on to -5V or -10V for secure turn-off.

• Peak Output Current: Capable of delivering high peak currents, often between 5A and 40A, to ensure fast switching times.

• Isolation Voltage: High dielectric strength, often rated at 2500V to 4000V AC for one minute between input and output.

• Short Circuit Mask Time: Adjustable protection timing, often in the range of 1 to 10 microseconds.

• Coupling Capacitance: Very low values, such as 11pF, to minimize common-mode noise transfer.

• Operating Temperature: Industrial grade, typically rated from -40°C to +85°C.

Product Advantages

Mitsubishi gate modules offer several competitive benefits for power system designers:

• Integrated Protection: They feature built-in Short Circuit (SC) protection, Over-Current (OC) detection, and Under-Voltage Lock-Out (UVLO) to prevent power module failure during abnormal conditions.

• Plug-and-Play Compatibility: Many modules are designed for direct mounting onto specific Mitsubishi power modules, reducing wiring complexity and stray inductance.

• High Efficiency: By providing precise gate control, these modules minimize switching losses, which is critical for high-frequency applications and thermal management.

• Robust Noise Immunity: Advanced isolation techniques and low coupling capacitance prevent electromagnetic interference (EMI) from disrupting control logic.

• Reliability: Built using industrial-grade materials that ensure a long service life and high thermal cycle endurance.

Important Precautions

• Static Electricity: Gate terminals are highly sensitive to Electrostatic Discharge (ESD). Always use grounded wrist straps and avoid touching terminals directly with bare hands.

• Gate Resistance Selection: The external gate resistor ($R_G$) must be carefully calculated. A value too low may cause excessive ringing or $dV/dt$, while a value too high increases switching losses and heating.

• Wiring Inductance: Keep the leads between the gate driver and the power module as short as possible to minimize parasitic inductance, which can cause voltage spikes.

• Dead Time: Ensure sufficient dead time is programmed into the control logic to prevent "shoot-through" (arm short circuits) where both high and low-side switches are on simultaneously.

• Supply Stability: The control power supply must be stable and filtered. Large fluctuations in the 15V supply can trigger UVLO or lead to incomplete switching.

Product Applications

• Industrial Inverters: Used in Variable Frequency Drives (VFDs) for controlling motor speeds in manufacturing.

• Renewable Energy: Integrated into solar power conditioners and wind power converters to manage DC-to-AC conversion.

• Uninterruptible Power Supplies (UPS): Provides reliable switching for data center backup systems and critical power infrastructure.

• Electric Vehicles (EV): High-capacity gate drivers are used in traction inverters to manage motor torque and efficiency.

• Servo Drives: Facilitates high-precision motion control in robotics and CNC machinery.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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Our main products include DCS control system spare parts, PLC system spare parts, and robot system spare parts. Our advantageous brands include Allen Bradley, Bently Nevada, ABB, HIMA, Reliance, Bender, National Instruments, Emerson Ovation, Honeywell, Siemens, Allen Bradley, ICS Triplex, FOXBORO, Schneider, GE Fanuc, Motorola, HIMA, Prosoft, and other imported industrial components. Our main products serve a wide range of electronic, metallurgical, chemical, and power plants Industries such as steel mills, rubber, cement, machinery and equipment, and construction.