Philips EL1.1U, Руководство по обслуживанию

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Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 132 EL1.1U 9.
9.3.2 Diagram A4, MC34067P (IC 7U01)
Figure 9-4 Internal block diagram and pin configuration
9.3.3 Diagram B1A, NCP5422ADR2G (IC 7U00)
Figure 9-5 Internal block diagram and pin configuration
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
(Top View)
Vref
Osc Charge
Osc RC
Osc Control Current
Gnd
Error Amp Out
Inverting Input
Noninverting Input
One–Shot RC
VCC
Drive Output B
CSoft–Start
Enable/UVLO
Adjust
Drive Output A
Power Gnd
Fault Input
Noninverting
Input
11
8
6
16
3
2
1
Osc Charge
Enable /
UVLO Adjust
V
CC
15
5
14
12
13
V
ref
UVLO
Error
Amp
V
CC
UVLO /
Enable
Fault Detector
2.5 V
Clamp
Soft–Start
One–Shot
Output B
Inverting Input
Soft–Start
7
Error Amp
Output
One–Shot
Oscillator
Control Current
Osc RC
9
Ground 4
Fault Input
10
Pwr Gnd
Output A
V
ref
Variable
Frequency
Oscillator
Steering
Flip–Flop
5.0 V
Reference
Block Diagram
MC34067
Pin Configuration
F_15710_163.eps
230905
Block Diagram
Pin Configuration
F_15400_129.eps
240505
V
CC
Set
Dominant
IS+1
PWM
Comparator 1
PWM
Comparator 2
Reset
Dominant
CURRENT
SOURCE
GEN
BST
FAULT
BIAS
FAULT
R
S
R
S
R
S
RAMP1
GATE(H)1
5.0 A
0.425 V
0.25 V
COMP1
−
+
−
+
−
+
−
+ −
+
−
+
−
+
−
+
−
+
COMP2
V
FB1
RAMP2
FAULT
FAULT
Reset
Dominant
GATE(L)1
GATE(H)2
GATE(L)2
GND
V
CC
BST
V
CC
RAMP1
RAMP2
CLK1
CLK2
OSC
0.425 V
1.0 V
E/A2
E/A OFF
E/A1
E/A OFF
R
OSC
Q
1.2 mA
V
FB2
1.0 V
V
CC
−
+
−
+
IS−1
IS+2
IS−2
− +
− +
8.6 V
70 mV
70 mV
BST
7.8 V
FAULT
FAULT
non−overlap
non−overlap
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
V
FB1
COMP1
IS+1
GATE(H)1
GATE(L)1
GND
BST
IS−1
1 16
GATE(H)2
GATE(L)2
V
CC
R
OSC
IS+2
IS−2
V
FB2
COMP2
W
W
Y
L
W
A
A
2
2
4
5
P
C
N
SO−16