linear regulator (igbt) schematic

[MINING123STUDIOS]

Hi,
I want to convert a constant 12V supply intoto a constant 5V supply.
would the schematic work?
d4 is BZV55B5V1 (https://assets.nexperia.com/documents/data-sheet/BZV55_SER.pdf)
the igbt is IXYP60N65A5 (https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/2615/IXYP60N65A5.pdf)

[BILLPOD]

Good Morning MINING123STUDIOS,  what is under the blue blob???

[Gyro]

Hi,

Why an IGBT? You haven't indicated what (how much) current you need to regulate, but the IGBT indicated is optimized for high voltage, high current switching (as are most IGBTs) and the datasheet doesn't show any forward biased linear SOA (Safe Operating Area) curve.

[ArdWar]

would the schematic work?

No?

I mean, that's generally not how MOSFET work (and IGBT is just MOSFET slapped into BJT). You bias your gate at 5V, and the IGBT will drop its emitter to who knows what voltage depends on V_GE(TH). You can do that with BJTs because V_BE drops are generally pretty small, it isn't the case with MOSFETs where V_GS(TH) are often large and not well controlled.

[David Hess]

That will work, however the Vgs(th) (threshold voltage) of a IGBP or MOSFET is poorly controlled, so the zener voltage will likely need to be trimmed for an accurate output voltage.  A 2 transistor design solves that as shown below, with Q1 replaced by the IGBP or MOSFET.

[twospoons]

Why reinvent the wheel? A 7805 will do a better job than an igbt + zener. 

[schmitt trigger]

Would it work? Perhaps. If the definition of working is outputting a voltage.
Would it regulate to your desired voltage? No.

Besides the wide spread of the Vge(on) previously mentioned, there is no feedback.