Denon RCD-N9 Service Manual page 79

ICE3BS03LJG (SMPS : IC91)
ICE3BS03LJG Pin Discriptions
Pin Symbol
1 BL
2 FB
3 CS
4 Gate
5 HV
6 NC
7 VCC
8 GND
(1) at Tj=110C°
ICE3BS03LJG Block Diagram
85 ... 270 VAC
5.0V
3.25kΩ
I
BK T2
Latch off
BL
T3 0.6V
Enable
Signal
C
#1
BK
T1
#2
T
AE
0.9V
0.25V
C9
VCC
C2
25.5V
S1
C3
4.0V
5.0V
4.0V
R C4
FB
25kΩ
FB C5
1.23V
2pF
C6a
3.5V
C6b
3.0V
Control Unit
ICE3XS03LJ-F3 PWM controller ( Latch and Jitter Mode )
# : optional external components;
#1 : C
#2 : T
Package PG-DSO-8
BL 1
FB 2
CS 3
4
Gate
Function
Figure 1 Pin Configuration PG-DSO-8(top view)
extended Blanking and Latch off enable
Feedback
Current Sense
Gate driver output
High Voltage input
Not connected
Controller Supply Voltage
Controller Ground
C
Bulk
Version 2.0
Power Management
Internal Bias
Voltage
Reference
Latched off
Mode Reset
V < 6.23V
VCC
Power-Down Undervoltage Lockout
Reset
1 ms
10.5V
counter
Spike
1
G3 Latch off
Blanking
Mode
30us
Soft Start
Soft
120us
Start
Blanking Time
C7
Block
Thermal Shutdown
T >130°C
j
1
G2
&
Spike
Auto
Blanking
20ms G5 Restart
30us
Mode
Blanking
Time
Active Burst
20ms Blanking
& 0.6V
Mode
Time
G6
PWM OP
&
G11
Current Mode
is used to extend the Blanking Time
BK
is used to enable the external Latch off feature
AE
8 GND
7 VCC
6 N.C.
5
HV
HV VCC
Startup Cell
5.0V
18V
PWM
0.72
Section
Oscillator
Duty Cycle
max
Clock
Soft-Start
Comparator
Freq. jitter
&
FF1
G7
S
1
R Q
G8
PWM
Comparator Spike
1.66V
Blanking
C11
C8
190ns
Propagation-Delay
Compensation
V
Leading
csth
C10
Edge
Blanking
x3.2
220ns
&
C12
G10
0.25V
Current Limiting
79
CS (Current Sense)
The Current Sense pin senses the
on the series resistor inserted in
Power MOSFET. If CS reaches the
of the Current Limit Comparator, th
immediately switched off. Furtherm
information can be used to realize
operation through the PWM-Com
compares with FB signal.
Gate
The Gate pin is the output of the in
connected to the Gate of an externa
HV (High Voltage)
The high voltage Pin is connected t
input voltage. It is the input for the
Startup cell.
VCC (Power supply)
The VCC pin is the positive supp
operating range is between 10.5V an
GND (Ground)
The GND pin is the ground of the co
Snubber
C
VCC
5
GND
Gate
Driver
&
G9
Gate
CS
10kΩ
1pF D1
R
Sense
+
Converter
DC Output
V
OUT
-