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STA508 데이터시트(PDF) 6 Page - STMicroelectronics |
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STA508 데이터시트(HTML) 6 Page - STMicroelectronics |
6 / 10 page STA508 6/10 Figure 4. Test Circuit. Figure 5. Figure 6. Low current dead time = MAX(DTr,DTf) OUTxY Vcc (3/4)Vcc (1/2)Vcc (1/4)Vcc t DTf DTr Duty cycle = 50% INxY OUTxY gnd +Vcc M58 M57 R 8 Ω + - V67 = vdc = Vcc/2 D03AU1458 INxA INxB +VCC Q1 Q3 Q2 Q4 OUTxA GND OUTxB D00AU1134 High Current Dead time for Bridge application = ABS(DTout(A)-DTin(A))+ABS(DTOUT(B)-DTin(B)) +VCC Rload=8 Ω Q2 OUTB DTout(B) DTin(B) DTout(A) C71 470nF C70 470nF C69 470nF Iout=4A Iout=4A Q4 Q1 Q3 M64 INB M63 D03AU1517 M58 INA M57 DTin(A) Duty cycle=A Duty cycle=B Duty cycle A and B: Fixed to have DC output current of 4A in the direction shown in figure L68 22 µ L67 22 µ OUTA |
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