STEVAL-ISF002V1 STMicroelectronics, STEVAL-ISF002V1 Datasheet - Page 32

• 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

Digital PFC firmware
6.2
Table 1.
32/62
ADC1 Ch.3 (regular channel)
ADC1 Ch.4 (regular channel)
ADC2 Ch.5 (regular channel)
TIM3 Ch.4 (80 kHz)
Duty cycle changes every two periods
TIM3 Ch.3 (80 kHz)
This duty cycle is half of the TIM3 Ch.4 duty
cycle, but never lower than 8% (1 µs) to avoid
any bad effects caused by the power
MOSFET’s commutation
DMA Ch.1
Input
Output
EXTI line 1
System timer (SYSTICK)
Figure 27. PFC states
STM32 peripherals for digital PFC
Some STM2 peripherals are used to perform the digital PFC.
Peripherals and pins of the STM32F103ZE used for the digital PFC
Peripheral
Doc ID 16854 Rev 1
Output DC voltage
PFC current
Input AC voltage
Drives the PFC power MOSFET
Triggers the ADC:
– 1
– 2
Stores the converted values coming from
ADCs. Its IRQ calls the PFC routine after 2
couple of ADC conversions
V
Drives the relay for bypassing the resistor
when there is in-rush current
PFC hardware overcurrent detection
Internal timer for other features
in
channel is available)
Ch.5
st
nd
zero crossing detection
trigger to convert ADC1 Ch.3 (one
trigger to convert ADC1 Ch4 and ADC2
Description
nd
PC.09
PD.02
PD.10
PE.01
PA.03
PA.04
PA.05
MCU
pin
connector
MC + PFC
UM0877
22
29
27
14
24
21
2