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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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A6986 数据表(PDF) 39 Page - STMicroelectronics |
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A6986 数据表(HTML) 39 Page - STMicroelectronics |
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39 / 67 page  DocID026211 Rev 6 39/67 A6986 Closing the loop 67 where: Equation 30 6.4 Total loop gain In summary, the open loop gain can be expressed as: Equation 31 Example 1 VIN = 12 V, VOUT = 3.3 V, ROUT = 2.2 Selecting L = 6.8 µH, COUT = 15 µF and ESR = 1 m, RC= 68 k, CC= 180 pF, CP = 6.8 pF (please refer to Example 2), the gain and phase bode diagrams are plotted respectively in Figure 27 and Figure 28. fZ 1 2 R 1 CR1 ----------------------------------------- = fp 1 2 R1 R 2 R1 R2 + -------------------- CR1 ------------------------------------------------------- = fZ fp Gs GDIV s G CO s A 0 s = |
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