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AM4964GTR-G1 Fiches technique(PDF) 9 Page - Diodes Incorporated |
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AM4964GTR-G1 Fiches technique(HTML) 9 Page - Diodes Incorporated |
9 / 21 page AM4964 Document number: DS37241 Rev. 2 - 2 9 of 21 www.diodes.com June 2014 © Diodes Incorporated AM4964 A Product Line of Diodes Incorporated Functional Descriptions (cont.) CF –CF Capacitor Pin A capacitor is connected to this pin as a filter to translate PWM signal to be stable voltage. The resistors R3 and R4 are connected to CF pin to adjust the maximum speed at high temperature and low temperature corners. Adjust the maximum speed vs. input duty to approximately match the target specification using R3 and R4 at low temperature (T<TL, V8<V7); Measure the fan rotating speed vs. input duty. And draw a curve figure accordingly (Step=5%). Output PWM Duty vs. R3 and R4 at Low Temperature Adjust the maximum speed vs. input PWM duty to approximately match the target specification using R3 and R4 at high temperature (T>TH, V8>V7+0.7V). Output PWM Duty vs. R3 and R4 at High Temperature 0 20 40 60 80 100 0 20 40 60 80 100 R3=360K R3=1M R3 open Input Duty (%) 0 20 40 60 80 100 0 20 40 60 80 100 R4=150K R4=390K R4 open Input Duty (%) 0 20 40 60 80 100 0 20 40 60 80 100 R3=360K R3=1M R3 open Input Duty (%) 0 20 40 60 80 100 0 20 40 60 80 100 R4=150K R4=390K R4 open Input Duty (%) |
Numéro de pièce similaire - AM4964GTR-G1 |
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Description similaire - AM4964GTR-G1 |
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