On February 22, 2024, Toshiba announced today that it has launched a high-speed diode power MOSFET - DTMOSVI (HSD) in the new generation [1] DTMOSVI series with super-junction structure. This series is suitable for applications including data centers and photovoltaic power regulators. Switching power supply for other applications. The first batch of two 650 V N-channel power MOSFET products "TK042N65Z5" and "TK095N65Z5" in TO-247 packages began to support mass shipments today.

The new products feature high-speed diodes designed to improve reverse recovery [2] characteristics that are critical in bridge circuit and inverter circuit applications. Compared with the standard DTMOSVI, the new product shortens the reverse recovery time (trr) by 65% and reduces the reverse recovery charge (Qrr) by 88% (test conditions: -dIDR/dt=100 A/μs).

The DTMOSVI (HSD) process used in the new product improves the reverse recovery characteristics of Toshiba's DTMOSIV series (DTMOSIV (HSD)) and has lower drain off-current at high temperatures. In addition, the quality factor "drain-source on-resistance × gate-drain charge" of the new product is also lower. Compared with Toshiba's existing TK62N60W5[4][5] device, the high-temperature drain cut-off current of TK042N65Z5 is reduced by about 90%[3], and the drain-source on-resistance × gate-source charge is reduced by 72 %. This improvement will reduce power losses and help improve product efficiency. In the 1.5 kW LLC circuit [6] test, using the TK042N65Z5 improved the power supply efficiency by approximately 0.4% compared to using the TK62N60W5.

Toshiba plans to expand the DTMOSVI (HSD) product line in the future. The new devices will be available in TO-220 and TO-220SIS through-hole packages, as well as TOLL and DFN 8Í8 surface-mount packages.

In addition, based on the launched 650 V and 600 V products and new high-speed diode-type products, Toshiba will continue to expand the DTMOSVI series product line to improve the efficiency of switching power supplies and contribute to equipment energy saving.