ADP2114 Analog Devices, ADP2114 Datasheet - Page 20

• Manufacturer Part Number: ADP2114
• Description: Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
• Manufacturer: Analog Devices

ADP2114
SIMPLIFIED BLOCK DIAGRAM
SYNC/CLKOUT
OPCFG
COMP1
COMP2
V1SET
V2SET
SCFG
FREQ
EN1
FB1
SS1
EN2
FB2
SS2
I
I
SS
SS
6µA
6µA
OSC
CONFIGURATION
=
=
CURRENT LIMIT/
V
V
DD
DD
SELECTOR
SELECTOR
V
V
OUT
OUT
PHASE
SHIFT
SHUTDOWN
–
+
+
THERMAL
–
+
+
V
V
RAMP GENERATOR
RAMP GENERATOR
REF
REF
COMPENSATION/
COMPENSATION/
g m
AMPLIFIER
g m
AMPLIFIER
= 0.6V
= 0.6V
SLOPE
SLOPE
ERROR
ERROR
Figure 65. Simplified Block Diagram
VFB1
VFB2
UVLO
V
OSC_CH1
OSC_CH2
CLIM_CH1
CLIM_CH2
PULSE SKIP ENABLE
DD
OTSD
Rev. 0 | Page 20 of 40
GND
COMPARATOR
COMPARATOR
PULSE SKIP
PULSE SKIP
UVLO
CURRENT
CURRENT
OSC_CH1
OSC_CH2
ENABLE
ENABLE
LIMIT
LIMIT
UVLO
OTSD
UVLO
OTSD
COMPARATOR
COMPARATOR
PWM
PWM
0.7V
0.5V
0.7V
0.5V
CLIM_CH1
CLIM_CH2
VFB1
VFB2
PROTECTION
PROTECTION
ANTI-SHOOT
ANTI-SHOOT
LOGIC AND
LOGIC AND
CONTROL
THROUGH
CONTROL
THROUGH
DRIVERS
DRIVERS
MOSFET
MOSFET
GATE
GATE
WITH
WITH
HICCUP
HICCUP
TIMER
TIMER
–
+
–
+
CURRENT SENSE
CURRENT SENSE
AMPLIFIER
AMPLIFIER
CHANNEL 1
CHANNEL 2
PMOS
NMOS
PMOS
NMOS
POWER
POWER
STAGE
STAGE
PGOOD1
VIN1
VIN2
VIN3
SW1
SW2
PGND1
PGND2
PGOOD2
VIN4
VIN5
VIN6
SW3
SW4
PGND3
PGND4