CBB011M12GM4T

Overview

The CBB011M12GM4T is a 1200 V Silicon Carbide full-bridge power module from Wolfspeed, featuring an 11 mΩ typical on-state resistance. It utilizes Gen4 technology with a soft body diode and press-fit pins for assembly. The module supports a DC continuous drain current of 100 A at 50 °C heatsink temperature and handles up to 400 A pulsed current. Key electrical parameters include a maximum junction temperature of 175 °C, a thermal resistance (junction-to-heatsink) of 0.429 °C/W, and low switching energies such as 1.2 mJ turn-on energy at 600 V. It includes an integrated NTC temperature sensor and offers UL 1557 certification.

Feature Summary

• Generates ultra-low loss performance suitable for high-frequency operation through advanced Silicon Carbide MOSFET technology.
• Incorporates press-fit pin terminals to facilitate direct mounting without soldering, simplifying the assembly process.
• Features Gen4 technology that provides a soft-recovering body diode to minimize reverse recovery losses.
• Includes optional pre-applied phase change thermal interface material to ensure consistent thermal contact.

Applications

• High-efficiency converters and inverters
• Renewable energy systems
• Smart-grid and grid-tied distributed generation
• Electric vehicle chargers

Procurement Notes

Verify the specific ordering suffix when purchasing. The 'T' suffix indicates the inclusion of pre-applied phase change thermal interface material, whereas the non-T version lacks this feature. Confirm that the selected variant matches the thermal management requirements of the target design. Ensure compatibility with press-fit assembly tools and verify that the UL component recognition marking is present on the final product if regulatory compliance is required.

Selection Notes

Select this module for applications requiring high voltage isolation and low conduction losses in compact form factors. The 1200 V rating provides sufficient headroom for 800 V bus systems. Consider the 0.429 °C/W thermal resistance when designing the heatsink system to maintain junction temperatures below 175 °C. The integrated NTC sensor allows for precise thermal monitoring. Evaluate the stray inductance of 16.8 nH for gate drive loop optimization to prevent voltage overshoot during switching transitions.

Part Context

This component belongs to the Wolfspeed WolfPACK family of silicon carbide power modules. It is designed to replace traditional silicon-based IGBT modules in high-power density applications. The full-bridge topology integrates four switch positions within a single package, reducing interconnect parasitics compared to discrete solutions. It represents the fourth generation of Wolfspeed's SiC module technology.

Replacement Considerations

Direct replacement requires verifying mechanical footprint compatibility and pinout alignment. Electrical equivalence must be confirmed by comparing VDS, RDS(on), and thermal resistance values. Gate drive voltage levels and timing characteristics may differ; therefore, gate resistor values and driver capabilities should be re-evaluated to accommodate the specific switching speeds and capacitances of this SiC device.

FAQ

What is the difference between CBB011M12GM4 and CBB011M12GM4T?

The primary difference is the thermal interface material. The CBB011M12GM4T comes with pre-applied phase change thermal interface material, while the CBB011M12GM4 does not.

What is the maximum operating junction temperature?

The module supports an operational virtual junction temperature up to 150 °C and can handle intermittent operation up to 175 °C with reduced life expectancy.

How is the module mounted to the heatsink?

The module uses press-fit pins for assembly, which eliminates the need for soldering the baseplate to the heatsink. M4 bolts are used for securing the module with a specified torque range.