Datasheet

ADP5024 Data Sheet
Rev. E | Page 16 of 28
THEORY OF OPERATION
LDO
CONTROL
LDO
UNDERVOLTAGE
LOCKOUT
SOFT START
PWM/
PSM
CONTROL
BUCK2
DRIVER
AND
ANTISHOOT
THROUGH
SOFT START
DRIVER
AND
ANTISHOOT
THROUGH
OSCILLATOR
THERMAL
SHUTDOWN
SYSTEM
UNDERVOLTAGE
LOCKOUT
PWM
COMP
GM ERROR
AMP
GM ERROR
AMP
PSM
COMP
PSM
COMP
LOW
CURRENT
I
LIMIT
PWM
COMP
LOW
CURRENT
I
LIMIT
R1
R2
ADP5024
V
OUT1
V
OUT2
VIN1
AVI N
SW1
PGND1
VIN3 AGND VOUT3
FB3
PGND2
SW2
VIN2
AV I N
75Ω
ENBK1
ENABLE
AND
MODE
CONTROL
EN1 ENBK1
ENBK2
ENLDO
75Ω
ENBK2
EN2
EN3
600Ω
ENL D O
B
SEL
OP
MODE
MODE2
A
Y
MODE
FB1 FB2
PWM/
PSM
CONTROL
BUCK1
09888-045
Figure 45. Functional Block Diagram