Rainbow-electronics MAX8742 Manual de usuario Pagina 15

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MAX8741/MAX8742
500kHz Multi-Output Power-Supply Controllers
with High Impedance in Shutdown
______________________________________________________________________________________ 15
SHOOT-
THROUGH
CONTROL
R
Q
30mV
R
Q
LEVEL
SHIFT
0.75µs
SINGLE-SHOT
1X
MAIN PWM
COMPARATOR
OSC
LEVEL
SHIFT
CURRENT
LIMIT
SYNCHRONOUS-
RECTIFIER CONTROL
REF
SHDN
CK
-100mV
CSH_
CSL_
FROM
FEEDBACK
DIVIDER
BST_
DH_
LX_
V
L
DL_
PGND
S
S
SLOPE COMP
SKIP
REF
SECFB
COUNTER
DAC
SOFT-START
Figure 3. PWM Controller Functional Diagram
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