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L292 Datasheet(PDF) 10 Page - STMicroelectronics |
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L292 Datasheet(HTML) 10 Page - STMicroelectronics |
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10 / 12 page  Example : a) Data - Motors characteristics: LM = 5 mH RM = 5 W LM / RM = 1msec - Voltage and current characteristics: Vs = 20 V IM = 2 A VI = 9.1 V - Closed loop bandwidth : 3 kHz b) Calculation - From relationship (4) : Rs = 0.044 IM VI = 0.2 Ω and from (1) : Gmo = 2VS RM VR = 1 Ω −1 - RC = 1 msec [from expression (2) ]. - Assuming ξ = 1/ √2 ; from (7) follows : ξ2 = 1 2 = 400 C 4RF CF • 0.2 - The cutoff frequency is : f T = 143 • 10−3 RF CF = 3 kHz c) Summarising - RC = 1.10-3 sec - 1000 C RF CF = 1 - RF CF ≅ 47 µs C = 47 nF R = 22 K Ω For RF = 510 Ω → CF = 92 nF 10/12 L292 |
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