Sony PCM-D50 - Page 52

PCM-D50
52
IC2102 XC9505B093AR (POWER Board (2/4))
IC2103 XC9226A336MR (POWER Board (2/4))
1
EXT1
2
VDD
3
FB1
4PWM1
5EN1 EN1
ERROR AMP ERROR AMP
6EN2EN2
7PWM2
8
FB2
9
GND
10
EXT2
PWM/PFM
CONTROLLER
PWM/PFM
CONTROLLER
RAMP WAVE
GENERATOR
OSC
RAMP WAVE
GENERATOR
VREF1=0.9V
EN1
VREF2=0.9V
EN2
PWM
COMPARATOR
PWM
COMPARATOR
1
VIN
2
VSS
CE
3
ERROR AMP
UVLO COMP.
5LX
4VOUT
VREF,
CE
LOGIC DRIVER
PHASE
COMPENSATION
CURRENT FEEDBACK
CURRENT LIMIT
PWN/PFM
SELECTOR
RAMP WAVE
GENERATOR
CE/MODE
CONTROL
UVLO
WWW.OURDEV.CN