Zero Crossing Detection Of Input Voltage; Figure 22. Steval-Isf002V1 - Vin Zero Crossing Detection Section - ST STM32F103ZE User Manual

STEVAL-ISF002V1 hardware description
Equation 39
From Equation 4
Equation 40
Furthermore, out2 of the TSV992 is connected to the MCU that can have information about
the PCF overcurrent occurrence (see
3.5.7

Zero crossing detection of input voltage

Figure 22. STEVAL-ISF002V1 - vin zero crossing detection section

From PFC_SYNC, information can be obtained on the zero crossing of the input voltage as
shown in Figure 23
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<
PFC_Iac
and Equation 7 , out2 of the TSV992 is high if:
. 3
<
I
RSense
. 0
Figure 43
.
Doc ID 16854 Rev 1
+
R20 R21
⋅
5 V
+ +
R19 R20 R21
035714
=
A 14 . 31 A
212121
).
UM0877