Ic Data Sheets - Philips EJ3.0UPA Service Manual

EN 106 9. EJ3.0U PA
9.3

IC Data Sheets

This section shows the internal block diagrams and pin
configurations of ICs that are drawn as "black boxes" in the
electrical diagrams (with the exception of "memory" and "logic"
ICs).
9.3.1 Diagram B01A, NCP5422A (IC 7U00)
Block Diagram
V
8.6 V
−
7.8 V
IS+1
+
IS−1
−
−
70 mV
IS+2
+
IS−2
−
−
70 mV
−
+
0.25 V
−
5.0 A
Pin Configuration
Circuit Descriptions, Abbreviation List, and IC Data Sheets
V
R
CC
OSC
BIAS
CC
FAULT
S Q
Set
Dominant
R
E/A OFF
E/A1
1.0 V
V
COMP1
FB1
1
GATE(H)1
GATE(L)1
GND
BST
IS+1
IS−1
V
FB1
COMP1
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
Figure 9-6 Internal block diagram and pin configuration
CURRENT
SOURCE
GEN
CLK1
OSC
CLK2
FAULT
PWM
Comparator 1
RAMP1
0.425 V
−
+
FAULT
PWM
Comparator 2
RAMP2
E/A OFF
0.425 V
−
+
−
E/A2
1.0 V
V COMP2
FB2
SO−16
16
GATE(H)2
GATE(L)2
V
CC
R
OSC
IS+2
IS−2
V
FB2
COMP2
RAMP2
RAMP1
BST
S
non−overlap
Reset
V
Dominant
CC
R
FAULT
BST
S
non−overlap
Reset
V
Dominant
CC
R
FAULT
FAULT
1.2 mA
F_15400_129.eps
BST
GATE(H)1
GATE(L)1
GATE(H)2
GATE(L)2
GND
240505