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terrariaking's full-bridge DRSSTC driver with totem-pole GDT drive

full bridge · dual totem-pole GDT drive · independent design · 2023

A full-bridge driver on EasyEDA/oshwhub. It is not a Ward derivative. The gate-drive-transformer output is a dual totem pole, for a harder turn-on. The upper and lower channel groups are identical, so the same board serves a single bridge or two cascaded. It runs off 24 V, with current limiting through a current transformer into an LM393 comparator. It is mostly SMD, because the through-hole parts he started from would not fit the board he wanted. It is one of three points of contact we have found into the Chinese DRSSTC-building scene. That scene is active on oshwhub, bilibili and several DIY forums we could not reach directly.

Schematics and photos

Sources

This is the card from the driver tree, written from what the builder published. Send corrections through the forum.