Dual 3 A, 20 V Synchronous Step-Down Regulator with Integrated High-Side MOSFET
Data Sheet
FEATURES
Input voltage: 4.5 V...
Dual 3 A, 20 V Synchronous Step-Down Regulator with Integrated High-Side
MOSFET
Data Sheet
FEATURES
Input
voltage: 4.5 V to 20 V ±1% output accuracy Integrated 90 mΩ typical high-side
MOSFET Flexible output configuration Dual output: 3 A/3 A Parallel single output: 6 A Programmable switching frequency: 250 kHz to 1.2 MHz External synchronization input with programmable phase shift, or internal clock output Selectable PWM or PFM mode operation Adjustable current limit for small inductor External compensation and soft start Startup into precharged output Supported by ADIsimPower™ design tool
RTOP1 CC1 RBOT1 RC1
FB1 COMP1
ADP2323
TYPICAL APPLICATION CIRCUIT
VIN CSS1
SS1 PVIN1 BST1 EN1
CIN1
CBST1 L1 VOUT1
CINT
INTVCC MODE SCFG TRK2 TRK1 VDRV GND PGOOD2 PGOOD1 SYNC
COMP2
SW1 M1 DL1
COUT1
CDRV
ADP2323
PGND DL2 M2 SW2
BST2
COUT2
PVIN2
RT
FB2
EN2
SS2
APPLICATIONS
Communications infrastructure Networking and servers Industrial and instrumentation Healthcare and medical Intermediate power rail conversion DC-to-dc point of load applications
ROSC
CBST2
L2
VOUT2
RC2 RBOT2 RTOP2 CC2
CSS2 CIN2
VIN
09357-001
Figure 1.
GENERAL DESCRIPTION
The ADP2323 is a full featured, dual output, step-down dc-todc regulator based on current-mode architecture. The ADP2323 integrates two high-side power
MOSFETs and two low-side drivers for the external N-channel
MOSFETs. The two pulse-width modulation (PWM) channels can be configured to deliver dual 3 A outputs or a parallel-to-single...