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h5 f5
To summarize, the advantages of these H5 and F5 variants, the most important features. As shown here in the box on the left, the H5 is a plug-and-play IGBT where one does not need the driver circuit when replacing other IGBTs. A soft IGBT is requiring low design efforts, and for highest efficiency the H5 can be driven with a single turn-on/turn-off gate resistor. Therefore, the H5 is easy to design in. In comparison, the main advantages of the F5 are shown in the box on the right-hand side, with a SiC application measurement (which is the best fit), the designer gets a 0.5% system efficiency improvement over the H5. The engineer recommends the F5 in combination with a silicon carbide boost diode in the PFC. The low Irrm helps to reduce the voltage overshoot during turn-off, thus giving high turn-on/-off speeds and high efficiency. The F5 though must be driven with a split turn-on/ -off gate resistor and be implemented in a low inductance design. Due to the split of the Rg driving circuit, meaning that the Rg on is different to the Rg off, it requires more effort to design in. Needed is an optimized layout with low parasitic stray inductance.
PTM Published on: 2014-03-18