Sony DP-RF6000 - Page 13

13
DP-RF6000
• IC BLOCK DIAGRAMS
IC305 XC6365A253MR
PWM/PFM
CONTROLLER
PHASE
COMPENSATION
RAMP WAVE
GENERATOR
OSC
BUFFER,
DRIVER
V OUT
CE
VDD
EXT/
GND
-
+
-
+
ERROR AMP.
PWM
COMPARATOR
5
3
1
2
4
VREF WITH
SOFT START,
CE
IC4002 XC9201D09AKR
EXT
ISEN
V IN
CE/SS
V SS
V OUT
CC/GAIN
CLK
RAMP WAVE,
INTERNAL CLK
GENERATOR
CHIP ENABLE,
SOFT START UP,
U.V.L.O.
VERR
PWM
LERR
INTERNAL
VOLTAGE
REGULATOR
EXT TIMMING
CONTROL
LOGIC
CURRENT
LIMIT
PROTECTION
LIMITTER COMP.
VREF GENERATOR
CE,UVLO
TO INTERNAL
CIRCUIT
0.9V
SAMPLING
R1
R2
MIX
2.0V
TO INTERNAL
CIRCUIT
1
8
7
6
5
2
3
4