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IGBT/SiC module gate drivers provide NTC data for accurate thermal management

May 9, 2023 By Redding Traiger

Power Integrations introduced the SCALE-iFlex LT NTC family of IGBT/SiC module gate drivers. The new gate drivers target the popular new dual, 100 mm x 140 mm style of IGBT modules, such as the Mitsubishi LV100 and the Infineon XHP 2, as well as silicon carbide (SiC) variants thereof up to 2300 V blocking voltage. The SCALE-iFlex LT NTC drivers provide Negative Temperature Coefficient (NTC) data – an isolated temperature measurement of the power module – which enables accurate thermal management of converter systems. This is particularly important for systems with multiple modules arrayed in parallel, ensuring proper current sharing and dramatically enhancing overall system reliability.
  
Based on Power Integrations’ proven SCALE-2 technology, SCALE-iFlex LT gate drivers improve current sharing accuracy and therefore increase the current carrying capability of multiple-paralleled modules by 20 percent, allowing users to significantly increase the semiconductor utilization of their converter stacks. This is possible because the localized control of each 2SMLT0220D MAG (Module Adapted Gate driver) unit ensures precise control and switching, enabling excellent current sharing. Advanced Active Clamping (AAC) is employed to deliver accurate overvoltage protection.
 
To further increase space-saving, up to four MAG-driven power modules can be parallel-connected from a single 2SILT1200T Isolated Master Control (IMC) unit, which can also be mounted on a power module due to its compact outline. The gate drivers are fully qualified to IEC 61000-4-x (EMI), IEC-60068-2-x (environmental), and IEC-60068-2-x (mechanical) specifications, and undergo complete type testing – low voltage, high voltage, thermal cycling – shortening designer development time by 12 to 18 months. A comprehensive set of protection features is included, and parts are optionally available with conformal coating.
 
New SCALE-iFlex LT NTC gate drivers are available for sampling now. 

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Filed Under: Development Tools, drivers, Power Components, Power Management Tagged With: powerintegrationsinc

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