SG3525 posseses high drive power totem pole outputs, allowing it to directly drive MOSFET gates via a gate drive transformer.It is a commonly available and low cost IC.
#SIMPLIS TOTEM POLE OUTPUT DRIVER DRIVER#
My chip of choice for the half bridge flyback driver is SG3525, for several reasons: And while I’m quite a fan of Royer oscillator and have used it in assortment of my other projects, here I’ll be discussing my own approach on a half bridge flyback driver design. The MOSFETs are generally controlled by a PWM chip of some sort. Another common solution is the half bridge driver, which involves a half bridge of MOSFETs supplied directly from rectified and filtered mains. One very popular solution is “Mazzili flyback driver”, which is a circuit based on a powerful Royer oscillator with MOSFETs. Over time, experimenters have found other ways to push greater amounts of power through the flyback, generally up until it’s destruction. The first and simplest driver designs generally consisted of a single silicon switch driving the transformer in flyback mode, which turns out as quite poor practice when the transformer is loaded by an arc (a problem I elaborated in my NE555 ignition coil driver project).
#SIMPLIS TOTEM POLE OUTPUT DRIVER TV#
It consists cathode-ray tube TV high voltage transformer driven by a high frequency inverter, in order to obtain HV output. A flyback driver is a common amateur high voltage generator.
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