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A6984 датащи(PDF) 14 Page - STMicroelectronics

номер детали A6984
подробное описание детали  36 V, 400 mA automotive synchronous step-down switching regulator
PDF  47 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A6984 датащи(HTML) 14 Page - STMicroelectronics

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A6984
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DocID030396 Rev 1
Figure 5. Maximum output voltage vs. input voltage range at ILOAD = 400 mA
4.1.2
Leading network
The small signal contribution of a simple voltage divider is:
Equation 2
A small signal capacitor in parallel to the upper resistor (see C3 in Figure 6) of the voltage
divider implements a leading network (fzero < fpole) that can improve the dynamic regulation
for boundary application conditions (high fSW / high duty cycle conversion) and improves the
SNR for the feedback comparator operation, entirely coupling the high frequency output
voltage ripple without the resistive divider attenuation.
G
DIV s

R
2
R
2
R
3
+
--------------------
=



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