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STA530 Datasheet(PDF) 11 Page - STMicroelectronics |
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STA530 Datasheet(HTML) 11 Page - STMicroelectronics |
11 / 17 page 11/17 STA530 EXTERNAL COMPONENTS Figure 7. BASH® module SAM261 6.1 with 2 x STA530 (see Application Note AN1643) Power - On-Off sequences: In order to avoid damages to the SAM261 board it is important to follow these sequences: At Power-On apply in the first the Auxiliary Power Supply (±24V) and after the Main Power Supply (+50V), in this condition the system is in "Mute state" and it can move in "play state" with the switch present on the pcb. At Power-Off is better to bring the SAM module in "Mute state" and after that to follow this order: switch- off the Main Supply Voltage (+50V) and subsequently the Auxiliary Power Supply. (±24V). Name Function Value Formula R1 = R2 =R7 = R8 Resistor for tracking input voltage filter 10K Ω R5 = R6 =R3 = R4 Resistor for tracking input voltage filter 56K Ω Cac C1 = C2 = C3 = C4 AC Decoupling capacitor 100nF (fp = 16Hz, Rac =100K Ω ) R9=R10=R11=R12 Resistor for tracking input voltage filter 10K Ω C5 = C6 = C7 = C8 Capacitor for Tracking input voltage filter 1nF C9=C10=C11=C12 Dc decoupling capacitor 1 µF R17 Bias Resistor for Stby/Mute function 10K Ω R18 Stby/Mute constant time resistor 30K Ω R19 Mute resistor 30K Ω C19 Capacitor for Stby/Mute resistor 2.2 µF C17 = C18 Power supply filter capacitor 100nF R13 = R14 Centering resistor 330 Ω, 1W C13 = C14 Tracking rail power supply filter 680nF R15 TRK_out 40K Ω R16 Protection 1K Ω C15 = C16 Power supply filter capacitor 470 µF , 63V D1 Schottky diode SB360 Cac 1 2 π fp Rac ⋅⋅ --------------------------------- = STA530 4 x 50Watts STA530 1 x 100Watts 2 x 50Watts Buck Regulator +50VDC 8 Ohm Loads 4 Ohm Load AudioInputs STABP01 Controller Dynamic Power Supply (CD+ & CD-) Signal Power Supply +/-24V DC / 50 mA +/-24V DC / 50 mA Signal Power Supply Lines of Controls BASH fi module SAM261 6.1 STA530 4 x 50Watts STA530 1 x 100Watts 2 x 50Watts Buck Regulator +50VDC 8 Ohm Loads 4 Ohm Load AudioInputs STABP01 Controller Dynamic Power Supply (CD+ & CD-) Signal Power Supply +/-24V DC / 50 mA +/-24V DC / 50 mA Signal Power Supply Lines of Controls BASH fi module SAM261 6.1 |
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