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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L6599 датащи(PDF) 22 Page - STMicroelectronics |
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L6599 датащи(HTML) 22 Page - STMicroelectronics |
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22 / 36 page  Application information L6599 22/36 Figure 28. Power vs frequency curve in an resonant half-bridge As a result, the average input current will smoothly increase, without the peaking that occurs with linear frequency sweep, and the output voltage will reach the regulated value with almost no overshoot. Typically, RSS and CSS will be selected based on the following relationships: where fstart is recommended to be at least 4 times fmin. The proposed criterion for CSS is quite empirical and is a compromise between an effective soft-start action and an effective OCP (see next section). Please refer to the timing diagram of Figure 31 to see some significant signals during the soft-start phase. RESONANCE FREQUENCY f | Z ( f ) | -1 Initial frequency Steady-state frequency R SS RF min f start f min ------------ 1 – ---------------------- = C ss 310 3 – ⋅ R SS ---------------------- = |
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