ncp5423dr2g ON Semiconductor, ncp5423dr2g Datasheet - Page 6
ncp5423dr2g
Manufacturer Part Number
ncp5423dr2g
Description
Dual Outofphase Synchronous Buck Controller With Current Limit
Manufacturer
ON Semiconductor
Datasheet
1.NCP5423DR2G.pdf
(16 pages)
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IS+1
IS−1
IS+2
IS−2
8.6 V
7.8 V
70 mV
70 mV
− +
− +
5.0 mA
+
−
+
−
+
−
−
+
0.25 V
+
−
V
CC
+
1.0 V
−
Set
Dominant
R
S
−
+
Q
BIAS
FAULT
V
E/A OFF
CC
V
FB1
+
−
R
E/A1
OSC
COMP1
NCP5422A, NCP5423
Figure 2. Block Diagram
PWM
Comparator 1
http://onsemi.com
0.425 V
OSC
V
FB2
CURRENT
PWM
Comparator 2
SOURCE
GEN
6
0.425 V
RAMP1
CLK1
CLK2
-
+
−
+
−
1.0 V
FAULT
RAMP2
E/A OFF
FAULT
−
+
E/A2
COMP2
1.2 mA
Reset
Dominant
S
R
R
S
Reset
Dominant
FAULT
FAULT
RAMP1
FAULT
non−overlap
non−overlap
RAMP2
V
V
BST
BST
CC
CC
GATE(L)1
BST
GATE(H)1
GATE(H)2
GATE(L)2
GND
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