Specifications

34 Control and Automation Solutions Guide
Save Space and Costs by Integrating Three
Switching Controllers
MAX15048/MAX15049
The MAX15048/MAX15049 are triple-output, PWM, step-down DC-DC controllers
with tracking (MAX15048) and sequencing (MAX15049) options. The devices
operate over the 4.7V to 23V input voltage range. Each PWM controller provides
an adjustable output down to 0.6V and delivers up to 15A of load current with
excellent load and line regulation. The options of coincident or ratiometric
tracking (MAX15048) or output sequencing (MAX15049) allow tailoring of the
power-up/power-down sequence, depending on the system requirements.
Benefits
• Simplify design of power supplies for
CPUs that require rail tracking and
sequencing
◦ Built-in tracking and sequencing
provides solution for complex rail
relationships on advanced CPUs and
FPGAs
◦ Triple controller provides three rails
in one IC
• External power MOSFETs allow precise
solution sizing to meet needs
LX1
BST1
PGND1
FB1
COMP1
V
OUT1
DH1
DL1
EN1
V
OUT3
V
OUT2
LX2
BST2
PGND2
FB2
COMP2
DH2
DL2
EN2
LX3
BST3
PGND3
FB3
COMP3
DH3
DL3
EN3
REG
IN
RT
SGND
PGOOD
IN
V
REG
IN
IN
V
OUT1
V
OUT1
V
OUT2
V
OUT3
SOFT-START SOFT-STOP
COINCIDENT TRACKING OUTPUTS
MAX15048
Typical operating circuit of the MAX15048.