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AN3028 데이터시트(PDF) 27 Page - STMicroelectronics |
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AN3028 데이터시트(HTML) 27 Page - STMicroelectronics |
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27 / 37 page ![]() AN3028 Guidelines for feedback loop calculation Doc ID 16135 Rev 1 27/37 If the margin is not high enough, another choice should be done for fZc, fPc and fcross, and the procedure repeated. When the stability is ensured, the next step is to find the values of the schematic components, which can be calculated using the formulas below, as follows: Equation 10 Equation 11 Equation 12 Equation 13 1 3 . 3 Vout 6 R 5 R − = 6 R 5 R 5 R 0 C Gm fPc fZc 7 C + ⋅ ⋅ = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − ⋅ = 1 fZc fPc 7 C 8 C 8 C 7 C fPc 2 8 C 7 C 7 R ⋅ ⋅ ⋅ π ⋅ + = |
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