STEVAL-ISF002V1 STMicroelectronics, STEVAL-ISF002V1 Datasheet - Page 27

• Manufacturer Part Number: STEVAL-ISF002V1
• Description: BOARD EVALUATION
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISF002V1

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10422

UM0877
Note:
Figure 23. Vin zero crossing detection (without load)
Figure 24. Vin zero crossing detection (with load)
Then for each mains period on PFC_SYNC, a transition high/zero occurs as soon as the
mains crosses zero.
This circuitry, combined with a timer, is also used to measure the frequency of V
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