
New Developments in RET Technology - Feb/March 2021
Resistor-Equipped Transistors (RETs) – also known as digital transistors or pre-bias transistors – offer many benefits, including saving space, reducing manufacturing costs and increased...
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The MOSFETs are suitable for resonant topologies in soft-switching applications, for example telecomms, server, solar and off-board EV-charging.
The devices match LLC and zero-voltage-switching phase-shift full-bridge topologies, and in addition to the 650V breakdown voltage, have an integrated fast body diode, improved switching performance, they also have low reverse-recovery charge.
Switching losses, as well as RDS(on) dependency over-temperature, are significantly reduced, says the company, which, combined with improved gate charge (Q g) increases efficiency over the whole load range. In SMPS, they deliver improved full-load efficiency compared to competing devices, says the company and offer best-in-class RDS(on) to increase the power density level of SMPS at a competitive price.
The 650V CoolMOS CFD7 is available now in TO-220, TO-247, and TO-247 4-pin packages.
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