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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN1439 датащи(PDF) 13 Page - STMicroelectronics |
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AN1439 датащи(HTML) 13 Page - STMicroelectronics |
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13 / 17 page  AN1439 Design specification 13/17 Figure 13. STEVAL-ISC001V1: load transient (at Vin = 220 Vac: Iout = 0.5 to 2.5 A) Evaluation board optimization for minimum no-load consumption Additional optimization steps need to be taken in order for the STEVAL-ISC001V1 to fulfill the limits set by the 3rd phase of the European code of conduct on efficiency of external power supplies, which has been active from 01.01.2005. According to this standard, the no- load consumption must be less than 0.5 W at rated input voltage (220 Vac for European mains, the 110 Vac of the US mains is not a concern). To have some margin, it is a common design target to fulfill the specification even at maximum input voltage (264 Vac). Figure 11. STEVAL-ISC001V1 behavior upon short-circuit on the output. Vin=220 Vac Figure 12. STEVAL-ISC001V1 behavior upon short-circuit on D7. Vin=220 Vac Ch1: Q1 drain voltage Ch2: L6565 supply voltage Ch1: Q1 drain voltage Ch2: L6565 supply voltage Ch2: Output voltage Ch2: Load current |
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