Inverter Bridge (IGBT/MOSFET Module)

Product Specifications

Technical details and manufacturing context for Inverter Bridge (IGBT/MOSFET Module)

Definition

The Inverter Bridge (IGBT/MOSFET Module) is a power semiconductor component used in electrical equipment manufacturing, specifically within the Main Transformer/Inverter assembly of variable frequency drives, power supplies, and renewable energy systems. It performs the DC-to-AC conversion by high-frequency switching of IGBT or MOSFET transistors arranged in a bridge configuration (half-bridge or full-bridge). This switching action chops the DC input into a pulsed waveform, which is then filtered to produce an AC output with controlled voltage, frequency, and waveform. The module enables precise motor speed and torque control, making it critical for industrial automation and energy efficiency.

Typical parameters for this component include a rated power range of 5.5–110 kW, input voltage of 380–480 V AC (3-phase, 50/60 Hz, per IEC 60038), and output voltage of 0–480 V AC (variable, PWM controlled). Output frequency is adjustable from 0–400 Hz, and efficiency is 97–99% at rated load (per IEC 61800-9-2). Switching frequency ranges from 2–16 kHz, with higher frequencies for quieter operation. Overload capacity is 150% for 60 seconds (typical for heavy duty, per IEC 61800-4). Operating temperature is -40 to 85 °C (junction temperature), storage temperature -40 to 125 °C, and humidity 5–95% RH non-condensing (per IEC 60068-2-78). Ingress protection is IP20–IP54 (per IEC 60529), isolation voltage is 2500 V AC between input and output (per IEC 61800-5-1), and weight ranges from 2.5–15 kg depending on power rating.

Materials typically include silicon carbide (SiC) or silicon semiconductor wafers, copper terminals and busbars, ceramic substrates (Al2O3, AlN), thermal interface materials, and epoxy molding compound. These materials ensure thermal management and electrical isolation.

Selection of the module should be based on motor rating, input voltage, and environmental conditions. Verification of model-specific values and standards with the legal manufacturer or supplier is essential before procurement. The module's performance is influenced by cooling, gate drive design, and control algorithms. Maintenance signals include increased junction temperature, reduced efficiency, or switching faults. Failure boundaries include overvoltage, overcurrent, and thermal stress beyond specified limits.

Working Principle

The Inverter Bridge uses multiple IGBT or MOSFET power transistors arranged in a bridge topology (typically half-bridge or full-bridge). Control signals switch these transistors on and off in precise sequences, chopping the DC input voltage into a pulsed waveform. This waveform is then filtered to produce the desired AC output with controlled frequency, amplitude, and waveform characteristics. The switching frequency and duty cycle determine the output voltage and frequency, enabling precise control for motor drives and power supplies.

Common Materials

Silicon carbide (SiC) or silicon semiconductor wafers, Copper terminals and busbars, Ceramic substrates (Al2O3, AlN), Thermal interface materials, Epoxy molding compound

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Power	5.5–110 kW	Select based on motor rating
Input Voltage	380–480 V AC	3-phase, 50/60 HzIEC 60038
Output Voltage	0–480 V AC	Variable, PWM controlled
Output Frequency	0–400 Hz	Adjustable, up to 400 Hz
Efficiency	97–99 %	At rated loadIEC 61800-9-2
Switching Frequency	2–16 kHz	Higher for quieter operation
Overload Capacity	150% for 60s	Typical for heavy dutyIEC 61800-4
Operating Temperature	-40–85 °C	Junction temperature range
Storage Temperature	-40–125 °C	Non-operating
Humidity	5–95 % RH	Non-condensingIEC 60068-2-78
Ingress Protection	IP20–IP54	Depends on enclosureIEC 60529
Isolation Voltage	2500 V AC	Between input and outputIEC 61800-5-1
Weight	2.5–15 kg	Depends on power rating

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

IGBT/MOSFET Chips Part
Power switching elements that control current flow

Material: Silicon or silicon carbide semiconductor
Gate Driver Circuit
Provides precise voltage/current signals to control switching of transistors

Material: Integrated circuit components on PCB
DCB Substrate Part
Direct copper bonded ceramic substrate for electrical isolation and thermal management

Material: Aluminum oxide or aluminum nitride ceramic with bonded copper layers
Terminals Part
Electrical connection points for power and control signals

Material: Copper alloy
Baseplate Part
Mechanical mounting surface and primary heat dissipation path

Material: Aluminum or copper

Application & selection

Application Fit & Sizing Matrix

Operational Limits

pressure:	Atmospheric to 1.5 bar (cooling system dependent)
other spec:	Max switching frequency: 20 kHz, Isolation voltage: 2500 Vrms
temperature:	-40°C to +150°C (junction temperature)

Media Compatibility

✓ Motor drive systems ✓ Uninterruptible power supplies (UPS) ✓ Renewable energy inverters

Unsuitable: High-vibration environments without proper mechanical mounting

Sizing Data Required

Maximum output power (kW)
DC bus voltage (V)
Required output current (A)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Thermal fatigue and solder joint degradation

Cause: Cyclic thermal stress from power cycling (on/off switching) and load variations, leading to coefficient of thermal expansion (CTE) mismatch between semiconductor dies, solder layers, and substrate materials, eventually causing cracks and increased thermal resistance.

Gate oxide breakdown and latch-up

Cause: Overvoltage transients (e.g., from switching surges, lightning, or load dump), electrostatic discharge (ESD), or excessive dv/dt during switching, which can puncture the gate insulation in MOSFETs/IGBTs or trigger parasitic thyristor structures, resulting in permanent short circuits.

Maintenance Indicators

Audible arcing or popping sounds during operation, indicating potential insulation breakdown or loose connections.
Visible discoloration, bulging, or leakage from the module casing, suggesting internal overheating or thermal runaway.

Engineering Tips

Implement active thermal management with proper heatsink design, using thermal interface materials (TIMs) and ensuring forced air or liquid cooling maintains junction temperatures below 80-90% of rated limits to reduce thermal cycling stress.
Apply snubber circuits (RC or RCD) across switches to suppress voltage spikes and limit dv/dt, and use gate drivers with desaturation detection and soft-turn-off features to prevent overcurrent and latch-up events.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards

IEC 60747-9 (Semiconductor devices - Discrete devices - Part 9: Insulated-gate bipolar transistors (IGBTs)) EN 50178 (Electronic equipment for use in power installations)

Quoted from the published standard.

Manufacturing Precision

Terminal flatness: ≤0.05mm
Module thickness variation: ±0.1mm

Quality Inspection

Thermal cycling test (power cycling)
Partial discharge test (high voltage insulation verification)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Inverter Bridge (IGBT/MOSFET Module)

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Greegoo Electric

Yueqing, Zhejiang, CN

The official product range includes IGBT power modules for inverter switching legs. State leg topology, DC bus voltage, current, drive and protection, and cooling; models and scope are confirmed by the maker.

Listed on the company's own website · profile compiled by CNFX from public sources

View source page ↗ greegoo.com · recorded 2026-09-30

View profile Send enquiry

Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

Frequently Asked Questions

What is the typical rated power range for this Inverter Bridge?

The rated power range is 5.5–110 kW, selected based on the motor rating. Confirm the exact value with the manufacturer for your application.

What input voltage does the module support?

The input voltage is 380–480 V AC, 3-phase, 50/60 Hz, per IEC 60038. Verify compatibility with your supply system.

What is the efficiency of the module?

Efficiency is 97–99% at rated load, per IEC 61800-9-2. Actual efficiency may vary with operating conditions.

What are the environmental limits for operation?

Operating temperature is -40 to 85 °C (junction), storage -40 to 125 °C, humidity 5–95% RH non-condensing, and ingress protection IP20–IP54. Ensure proper cooling and enclosure.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Main Transformer / Inverter

View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Downstream Applications

Specialized Tooling

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Inverter Bridge (IGBT/MOSFET Module).

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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