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STK433-300-E Scheda tecnica(PDF) 5 Page - Sanyo Semicon Device |
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STK433-300-E Scheda tecnica(HTML) 5 Page - Sanyo Semicon Device |
5 / 13 page STK433-290-E No. A1630-5/13 Recommended External Components Parts Location Recommended value Circuit purpose Above Recommended value Below Recommended value R01, R23 100 Ω/1W Resistance for ripple filter. (Fuse resistance is recommended. Ripple filter is constituted with C03, C23.) - Short-through current may increase at high frequency. R02, R03, R04 1k Ω Resistance for input filters. - - R05, R06, R07 56k Ω Input impedance is determined. Output neutral voltage (VN) shift. (It is referred that R05=R08, R06=R09, R07=R10) R08, R09, R10 56k Ω Voltage gain (VG) is determined with R11, R12, R13 - - R11, R12, R13 1.8k Ω Voltage gain (VG) is determined with R8, R9, R10. (As for VG, it is desirable to set up by R11, R12, R13.) It may oscillate. (VG <30dB) With especially no problem R14, R15, R16 4.7 Ω Noise absorption resistance. - - R17, R18, R19 4.7 Ω/1W Resistance for oscillation prevention. - - R20, R21, R22 0.22 Ω ±10%, 5W Output emitter resistor (Metal-plate resistor is recommended.) Decrease of maximum output Power It may cause thrmal runaway R30 Note*5 Select restriction resistance, for the impression voltage of ‘#17 (Stand-By) pin’ must not exceed the maximum rating. C01, C02 100 μF/100V Capacitor for oscillation prevention. • Locate near the HIC as much as possible. • Power supply impedance is lowered and stable operation of the IC is carried out. (Electrolytic capacitor is recommended.) - - C03, C23 100 μF/100V Decoupling capacitor • The ripple ingredient mixed in an input side is removed from a power supply line. (Ripple filter is constituted with R03, R04.) The change in the ripple ingredient mixed in an input side from a power supply line C04, C05, C06 2.2 μF/50V Input coupling capacitor. (for DC current prevention.) - C07, C08, C09 470pF Input filter capacitor • A high frequency noise is reduced with the filter constituted by R02, R03, R04. - C10, C11, C12 3pF Capacitor for oscillation prevention. It may oscillate. C13, C14, C15 10 μF/10V Negative feedback capacitor. • The cutoff frequency of a low cycle changes. (fL=1/(2π ⋅ C13 ⋅ R11)) The voltage gain (VG) of low frequency is extended. However, the pop noise at the time of a power supply injection also becomes large. The voltage gain (VG) of low frequency decreases. C16, C17, C18 0.1 μF Capacitor for oscillation prevention. It may oscillate. C19, C20, C21 68pF Capacitor for oscillation prevention. It may oscillate. L01, L02, L03 3 μH Coil for oscillation prevention. With especially no problem It may oscillate. |
Codice articolo simile - STK433-300-E |
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Descrizione simile - STK433-300-E |
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