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A6986 데이터시트(PDF) 31 Page - STMicroelectronics

부품명 A6986
상세설명  38 V, 2 A synchronous step-down switching regulator with 30 µA quiescent current
PDF  67 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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A6986
Functional description
67
Figure 19. Peak current sense operation in overcurrent condition
The DC current flowing in the load in overcurrent condition is:
Equation 17
OCP and switchover feature
Output capacitor discharging the current flowing to ground during heavy short-circuit events
is only limited by parasitic elements like the output capacitor ESR and short-circuit
impedance.
Due to parasitic inductance of the short-circuit impedance, negative output voltage
oscillations can be generated with huge discharging current levels (see Figure 20).
IDCOC VOUT

IMAX
IRIPPLE VOUT

2
----------------------------------------
–
IMAX
VIN VOUT
–
2L
------------------------------ TON


–
==



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