Denon AVR-550SD

7
AVR-550SD
ICE2B265 (SMPS:IC2)
ICE2B0565 (SMPS:IC3)
Pin Assignmen
Block Diagram
1
6
7
8
4
3
2
5
VCCFB
Is ens e
Dr ain
Sof tS
N.C
GND
Dr ain
Thermal
Shutdown
T
j
>140°C
Internal
Bias
Voltage
Reference
Leading Edge
Blanking
200ns
Undervoltage
Lockout
Oscillator
Duty Cycle
max
Current-Limit
Comparator
x3.65
Soft-Start
Comparator
Current Limiting
PWM OP
Improved Current Mode
Soft Start
13.5V
8.5V
6.5V
C2
C1
16.5V
4.0V
R
FB
6.5V
Protection Unit
Power-Down
Reset
Power-Up
Reset
Power Management
C
Soft-Start
21.5-100kHz
CoolSET™-F2
Spike
Blanking
5s
PWM
Comparator
R SQ
Q
Error-Latch
C4
5.3V
C3
4.8V
R
Soft-Start
Gate
Driver
G3
G2
G1
G4
T1
V
csth
Propagation-Delay
Compensation
R
S
Q
Q
PWM-Latch
0.72
Clock
U
FB
f
osc
100kHz
21.5kHz
Standby Unit
FB
R
Sense
0.8V
C5
0.3V
10k
D1
5.6V
CoolMOS™
Isense
GND
SoftS
VCC Drain
6.5V
5.3V 4.8V 4.0V