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STNRGPF02 bảng dữ liệu(PDF) 6 Page - STMicroelectronics

tên linh kiện STNRGPF02
Giải thích chi tiết về linh kiện  2-channel interleaved PFC driver with embedded digital inrush current limiter function
PDF  43 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STNRGPF02 bảng dữ liệu(HTML) 6 Page - STMicroelectronics

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3
STNRGPF02/12 blocks diagram
The block diagram of both STNRGPF02/12 devices is shown in Figure 4
Figure 4. STNRGPFx2 Block diagram
STNRGPFx2
Driving
& Interleaving
Programming
Measurements
Analog
comparators
Cooling system
control
Start-up & Inrush
function
Status indicators
Digital controller
Voltage &
current loops
3.1
Voltage and current loops
The STNRGPFx2 controllers implement a mixed signal average current control. The task of digital voltage loop is
to regulate the output voltage of the PFC. Vin and Iout measurements are used to implement Input/Output Feed-
Forward (I/O FFD), so load steps or input voltage variations are quickly compensated by acting on digital PI
output calculations. This function allows to keep the output voltage to the setpoint value and as constant as
possible (see Figure 5).
STNRGPF02, STNRGPF12
STNRGPF02/12 blocks diagram
DS12895 - Rev 2
page 6/43



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