Denon RCD-N7 - Page 93

93
ICE3B0365J(SMPS :IC91)
ICE3B0365JBlockDiagram
Version 2.4 5 14 Nov 2006
CoolSET™-F3
ICE3Bxx65J
1 Pin Configuration and Functionality
1.1 Pin Configuration with PG-DIP-8-6
Figure 1 Pin Configuration PG-DIP-8-6(top view)
Note: Pin 4 and 5 are shorted within the DIP
package.
1.2 Pin Functionality
SoftS (Soft Start, Auto Restart & Frequency
Jittering Control)
The SoftS pin combines the function of Soft Start
during Start Up and error detection for Auto Restart
Mode. These functions are implemented and can be
adjusted by means of an external capacitor at SoftS to
ground. This capacitor also provides an adjustable
blanking window for high load jumps, before the IC
enters into Auto Restart Mode. Furthermore this pin is
also used to control the period of frequency jittering
during normal load.
FB (Feedback)
The information about the regulation is provided by the
FB Pin to the internal Protection Unit and to the internal
PWM-Comparator to control the duty cycle. The FB-
Signal controls in case of light load the Active Burst
Mode of the controller.
CS (Current Sense)
The Current Sense pin senses the voltage developed
on the series resistor inserted in the source of the
integrated Depl. CoolMOS™. If CS reaches the internal
threshold of the Current Limit Comparator, the Driver
output is immediately switched off. Furthermore the
current information is provided for the PWM-
Comparator to realize the Current Mode.
Drain (Drain of integrated Depl. CoolMOS™)
Pin Drain is the connection to the Drain of the internal
Depl. CoolMOS
TM
.
VCC (Power supply)
The VCC pin is the positive supply of the IC. The
operating range is between 10.3V and 26V.
GND (Ground)
The GND pin is the ground of the controller.
Pin Symbol Function
1 SoftS Soft-Start
2 FB Feedback
3 CS Current Sense/
650V
1)
Depl. CoolMOS™ Source
4 Drain
650V
1)
Depl. CoolMOS™ Drain
1)
at T
j
= 110°C
5 Drain
650V
1)
Depl. CoolMOS™ Drain
6 N.C. Not Connected
7 VCC Controller Supply Voltage
8 GND Controller Ground
Package PG-DIP-8-6
1
6
7
8
4
3
2
5
GNDSoftS
FB
CS
VCC
N.C
Drain
Drain
Version 2.4 6 14 Nov 2006
CoolSET™-F3
ICE3Bxx65J
Internal Bias
Voltage
Reference
Oscillator
Duty Cycle
max
x3.2
Soft-Start
Comparator
Current Limiting
PWM OP
Current Mode
Soft Start
C2
3.1V
R
FB
Power Management
C
SoftS
C
VCC
85 ... 270 VAC
C
Bulk
+
Converte
r
DC Outpu
t
V
OUT
Spike
Blanking
8.0us
PWM
Comparator
C3
4.0V
C4
4.5V
R
SoftS
Gate
Driver
0.75
Clock
R
Sense
0.6V
10kΩ
D1
T2
C6a
3.0V
C5
1.35V
C10
R
S
Q
Auto Restart
Mode
&
G7
&
G5
&
G9
1
G8
Thermal Shutdown
T
j
>140°C
3.25kΩ
3V
S1
5V
T1
Power-Down
Reset
CS
SoftS
GND
C7
C8
FB
PWM Section
Control Unit
FF1
T3
C12
&
0.32V
Leading
Edge
Blanking
220ns
25kΩ
2pF
5V
G10
0.8V
1pF
Propagation-Delay
Compensation
5V
Undervoltage Lockout
18V
10.3V
V
csth
-
ICE3xxx65J / CoolSET™- F3 Jitter version
VCC Drain
Depl. CoolMOS™
Startup Cell
C6b
&
G6
3.61V
&
G11
Active Burst
Mode
C13
20.5V
VCC
&
G12
Freq
Jitter
Snubber
&
G13
FF2
R
S Q
UVLO
2 Representative Blockdiagram
Figure 2 Representative Blockdiagram
Version 2.4 5 14 Nov 2006
CoolSET™-F3
ICE3Bxx65J
1 Pin Configuration and Functionality
1.1 Pin Configuration with PG-DIP-8-6
Figure 1 Pin Configuration PG-DIP-8-6(top view)
Note: Pin 4 and 5 are shorted within the DIP
package.
1.2 Pin Functionality
SoftS (Soft Start, Auto Restart & Frequency
Jittering Control)
The SoftS pin combines the function of Soft Start
during Start Up and error detection for Auto Restart
Mode. These functions are implemented and can be
adjusted by means of an external capacitor at SoftS to
ground. This capacitor also provides an adjustable
blanking window for high load jumps, before the IC
enters into Auto Restart Mode. Furthermore this pin is
also used to control the period of frequency jittering
during normal load.
FB (Feedback)
The information about the regulation is provided by the
FB Pin to the internal Protection Unit and to the internal
PWM-Comparator to control the duty cycle. The FB-
Signal controls in case of light load the Active Burst
Mode of the controller.
CS (Current Sense)
The Current Sense pin senses the voltage developed
on the series resistor inserted in the source of the
integrated Depl. CoolMOS™. If CS reaches the internal
threshold of the Current Limit Comparator, the Driver
output is immediately switched off. Furthermore the
current information is provided for the PWM-
Comparator to realize the Current Mode.
Drain (Drain of integrated Depl. CoolMOS™)
Pin Drain is the connection to the Drain of the internal
Depl. CoolMOS
TM
.
VCC (Power supply)
The VCC pin is the positive supply of the IC. The
operating range is between 10.3V and 26V.
GND (Ground)
The GND pin is the ground of the controller.
Pin Symbol Function
1 SoftS Soft-Start
2 FB Feedback
3 CS Current Sense/
650V
1)
Depl. CoolMOS™ Source
4 Drain
650V
1)
Depl. CoolMOS™ Drain
1)
at T
j
= 110°C
5 Drain
650V
1)
Depl. CoolMOS™ Drain
6 N.C. Not Connected
7 VCC Controller Supply Voltage
8 GND Controller Ground
Package PG-DIP-8-6
1
6
7
8
4
3
2
5
GNDSoftS
FB
CS
VCC
N.C
Drain Drain