ADP2114 Analog Devices, ADP2114 Datasheet - Page 26

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

ADP2114
OPERATION MODE CONFIGURATION
The dual-channel ADP2114 can be configured to one of the four
modes of operation by connecting the OPCFG pin as shown in
Table 7. This configuration sets the current limit for each
channel and enables or disables the transition to pulse skip mode
at light loads.
In the dual-phase configuration, the outputs of the two channels
are connected together, and they generate a single dc output
voltage, V
only Mode 2 in the OPCFG options can be used. In this mode,
the error amplifiers of both phases are used. The feedback
pins (FB1 and FB2) are tied together, the compensation pins
(COMP1 and COMP2) are tied together, the soft start pins (SS1
and SS2) are tied together, and the enable pins (EN1 and EN2)
are tied together.
Table 7. Current Limit Operation Mode and Configuration
Mode
1
2
3
4
OUT
R
0 to GND
4.7 k to GND
8.2 k to GND
15 k to GND
OPCFG
. For this single combined dual-phase output,
(Ω) ± 5%
Maximum Output Current
I
2/2
2/2
3/1
3/1
OUT1
(A)/I
OUT2
(A)
Rev. 0 | Page 26 of 40
Peak Current Limit
I
3.3/3.3
3.3/3.3
4.5/1.9
4.5/1.9
LIMIT1
In addition, if the power-good feature is used, combine PGOOD1
and PGOOD2 and connect them to VDD through a single
pull-up resistor.
When the ADP2114 is synchronized to an external clock, the
converters always operate in fixed frequency CCM, and they do
not enter into pulse skip mode at light loads. In this case, when
configuring the OPCFG pin, choose forced PWM mode.
(A)/I
LIMIT2
(A)
Power Savings at Light Load
Pulse skip enabled
Forced PWM
Pulse skip enabled
Forced PWM