Linear Technology DC1041A-A - LTM4601 Demo Board | 20VIN, 12A Step-Down μModule Regulator DC1041A-A DC1041A-A 数据表
产品代码
DC1041A-A
LTM4601/LTM4601-1
1
4601fd
12A µModule Regulators
with PLL, Output Tracking
and Margining
n
Telecom and Networking Equipment
n
Servers
n
Industrial Equipment
n
Point of Load Regulation
n
Complete Switch Mode Power Supply
n
Wide Input Voltage Range: 4.5V to 20V
n
12A DC Typical, 14A Peak Output Current
n
0.6V to 5V Output Voltage
n
Output Voltage Tracking and Margining
n
Parallel Multiple µModule Regulators for Current
Sharing
n
Differential Remote Sensing for Precision
Regulation (LTM4601 Only)
n
PLL Frequency Synchronization
n
±1.5% Regulation
n
Current Foldback Protection (Disabled at Start-Up)
n
SnPb or RoHS Compliant Finish
n
UltraFast™ Transient Response
n
Current Mode Control
n
Up to 95% Efficiency at 5V
IN
, 3.3V
OUT
n
Programmable Soft-Start
n
Output Overvoltage Protection
n
Small Footprint, Low Profile
(15mm
× 15mm × 2.82mm) Surface Mount LGA and
(15mm
× 15mm × 3.42mm) BGA Packages
1.5V/12A Power Supply with 4.5V to 20V Input
Efficiency and Power Loss
vs Load Current
DC/DC power supply with onboard switching controller,
MOSFETs, inductor and all support components. The
µModule
®
regulator is housed in small surface mount
15mm
× 15mm × 2.82mm LGA and 15mm × 15mm ×
3.42mm BGA packages. Operating over an input voltage
range of 4.5V to 20V, the LTM4601 supports an output
voltage range of 0.6V to 5V as well as output voltage
tracking and margining. The high efficiency design deliv-
ers 12A continuous current (14A peak). Only bulk input
and output capacitors are needed to complete the design.
The low profile and light weight package easily mounts
The low profile and light weight package easily mounts
in unused space on the back side of PC boards for high
density point of load regulation. The µModule regulator
can be synchronized with an external clock for reducing
undesirable frequency harmonics and allows PolyPhase
®
operation for high load currents.
A high switching frequency and adaptive on-time current
A high switching frequency and adaptive on-time current
mode architecture deliver a very fast transient response
to line and load changes without sacrificing stability. An
onboard differential remote sense amplifier can be used
to accurately regulate an output voltage independent of
load current. The onboard remote sense amplifier is not
available in the LTM4601-1.
L
, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and PolyPhase are registered
trademarks and UltraFast and LTpowerCAD are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents
including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611, 6677210.
Typical applicaTion
FeaTures
DescripTion
applicaTions
V
OUT
V
FB
MARG0
MARG1
MARG1
V
OUT_LCL
DIFFV
OUT
V
OSNS
+
V
OSNS
–
PGOOD
RUN
COMP
INTV
COMP
INTV
CC
DRV
CC
MPGM
TRACK/SS
PLLIN
LTM4601
ON/OFF
R1
392k
R
SET
40.2k
MARGIN
CONTROL
C
OUT
4601 TA01a
V
OUT
1.5V
12A
CLOCK SYNC
TRACK/SS CONTROL
100pF
C
IN
V
IN
f
SET
PGND
SGND
5% MARGIN
V
IN
4.5V TO 20V
LOAD CURRENT (A)
0
50
EFFICIENCY (%)
POWER LOSS (W)
55
65
70
75
95
4601 TA01b
60
2
4
6
8
10
12
14
80
85
90
0.5
1.0
2.0
4.0
1.5
2.5
3.0
3.5
12V
IN
12V
IN
5V
IN
5V
IN
EFFICIENCY
POWER LOSS