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Equation 23, page 14 , of AN57 by power integrations (below) shows a parameter called
“K TL31” which is the gain of the TL431.
From the attached TL431 datasheet , does this gain equal [Change in V(KA)]/[Change in V(ref)]?….which equals 1/0.0014 = 714
TL431 datasheet:
https://www.ti.com/lit/ds/symlink/tl431.pdf
AN57 by Power Integrations
https://ac-dc.power.com/sites/default/files/product-docs/an57.pdf
“K TL31” which is the gain of the TL431.
From the attached TL431 datasheet , does this gain equal [Change in V(KA)]/[Change in V(ref)]?….which equals 1/0.0014 = 714
TL431 datasheet:
https://www.ti.com/lit/ds/symlink/tl431.pdf
AN57 by Power Integrations
https://ac-dc.power.com/sites/default/files/product-docs/an57.pdf