STEVAL-ISF002V1 STMicroelectronics, STEVAL-ISF002V1 Datasheet - Page 31

• 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
Figure 26. Output voltage soft-start methodology
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Figure 27
PFC_RUNNING: this is the steady state of the PFC. The PFC routine is performed with
a loop frequency of 40 kHz, half of the switching frequency of the MOSFET. This
routine controls the digital PFC and performs the following.
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–
–
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PFC STOPPED: the PFC is in this state after any fault condition. The MOSFET is
switched off and it is not possible to exit from this state.
Software protections and limitations
Voltage PI
Current PI
Updating of the PFC MOSFET duty cycle
summarizes the states and transition events of the state machine.
Doc ID 16854 Rev 1
Digital PFC firmware
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