LTM4601A LINER [Linear Technology], LTM4601A Datasheet

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LTM4601A

Manufacturer Part Number
LTM4601A
Description
Ultralow EMI 28VIN, 6A DC/DC ?Module Regulator
Manufacturer
LINER [Linear Technology]
Datasheet

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FeaTures
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applicaTions
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Typical applicaTion
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and PolyPhase are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
4.5V TO 28V
Complete Low EMI Switch Mode Power Supply
Wide Input Voltage Range: 4.5V to 28V
6A DC Typical, 8A Peak Output Current
0.6V to 5V Output Voltage Range
EN55022 Class B Certified
Output Voltage Tracking and Margining
PLL Frequency Synchronization
±1.75% Total DC Error
Power Good Output
Current Foldback Protection (Disabled at Start-Up)
Parallel/Current Sharing
Ultrafast Transient Response
Current Mode Control
Up to 93% Efficiency at 5V
Programmable Soft-Start
Output Overvoltage Protection
–55°C to 125°C Operating Temperature Range
(LTM4606MPV)
Small Surface Mount Footprint, Low Profile Package
(15mm × 15mm × 2.8mm)
ASICs or FPGA Transceivers
Telecom, Servers and Networking Equipment
Industrial Equipment
RF Equipment
Ultralow Noise 2.5V/6A Power Supply with 4.5V to 28V Input
CERAMIC
10µF
35V
C
x2
IN
TRACK/SS
CONTROL
ON/OFF
10µF
35V
PGOOD
RUN
COMP
INTV
DRV
f
TRACK/SS
V
SET
D
SGND
CC
CC
V
IN
IN
LTM4606
, 3.3V
PLLIN
PGND
MARG0
MARG1
MPGM
V
FCB
OUT
V
OUT
FB
CLOCK SYNC
392k
5% MARGIN
MARGIN
CONTROL
4606 TA01a
R
19.1k
FB
47pF
DC/DC µModule Regulator
DescripTion
The LTM
noise high voltage 6A switching mode DC/DC power supply.
Included in the package are the switching controller, power
FETs, inductor, and all support components. The on-board
input filter and noise cancellation circuits achieve low noise
operation, thus effectively reducing the electromagnetic
interference (EMI). Operating over an input voltage range
of 4.5V to 28V, the LTM4606 supports an output voltage
range of 0.6V to 5V, set by a single resistor. This high ef-
ficiency design delivers 6A continuous current (8A peak).
Only bulk input and output capacitors are needed to finish
the design.
High switching frequency and an adaptive on-time current
mode architecture enables a very fast transient response
to line and load changes without sacrificing stability. The
device supports output voltage tracking and output volt-
age margining.
Furthermore, the µModule
with an external clock for reducing undesirable frequency
harmonics and allows PolyPhase
currents.
The LTM4606 is offered in a space saving and thermally
enhanced 15mm × 15mm × 2.8mm LGA package, which
enables utilization of unused space on the bottom of
PC boards for high density point of load regulation. The
LTM4606 is Pb-free and RoHS compliant.
2.5V AT 6A
C
OUT
®
Ultralow EMI 28V
4606 is a complete EN55022 Class B certified
Radiated Emission Scan at 12V
–10
–20
–30
50
40
30
20
10
0
30
128.1
226.2
®
324.3
regulator can be synchronized
FREQUENCY (MHz)
422.4
520.5
®
operation for high load
618.6
716.7
LTM4606
814.8
IN
, 2.5V
912.9
4606 TA01b
IN
1010
OUT
, 6A
/6A
4606fb
1

Related parts for LTM4601A

LTM4601A Summary of contents

Page 1

FeaTures Complete Low EMI Switch Mode Power Supply n Wide Input Voltage Range: 4.5V to 28V Typical, 8A Peak Output Current n 0. Output Voltage Range n EN55022 Class B Certified n Output Voltage Tracking ...

Page 2

LTM4606 absoluTe MaxiMuM raTings (Note 1) DRV , V ................................................ –0. OUT PLLIN, FCB, TRACK/SS, MPGM, MARG0, MARG1, PGOOD, RUN ..............–0.3V to INTV V , COMP ................................................ –0. ....................................................... –0.3V to ...

Page 3

T application (front page) configuration, R SYMBOL PARAMETER I Input Supply Bias Current Q(VIN) I Input Supply Current S(VIN) INTV V = 12V, RUN > Output Specifications I ...

Page 4

LTM4606 elecTrical characTerisTics operating temperature range, otherwise specifications are at T application (front page) configuration, R SYMBOL PARAMETER I Current into DRV Pin DRVCC CC R Resistor Between V and V FBHI OUT RUN Volts From RUN to GND Maximum ...

Page 5

Typical perForMance characTerisTics Efficiency vs Load Current with 5V (FCB = 0) IN 100 0.6V OUT 1.2V OUT 60 1.8V OUT 2.5V OUT 3.3V OUT LOAD CURRENT (A) 4606 G01 ...

Page 6

LTM4606 Typical perForMance characTerisTics –55°C, Start-Up OUT V OUT 0.5V/DIV I IN 0.5A/DIV 4606 G10 1ms/DIV V = 12V 1.5V OUT C = 2× 22µF , 10V CERAMIC OUT 1× 100µF , 6.3V CERAMIC ...

Page 7

FuncTions V (Bank 1): Power Input Pins. Apply input voltage be- IN tween these pins and PGND pins. Recommend placing input decoupling capacitance directly between V and PGND pins. V (Bank 3): Power Output Pins. Apply output load OUT ...

Page 8

LTM4606 pin FuncTions RUN (Pins A10, B9): Run Control Pins. A voltage above 1.9V will turn on the module, and below 1V will turn off the module. A programmable UVLO function can be ac- complished with a resistor from V ...

Page 9

DiagraM >1. <1V = OFF MAX = 5V RUN PGOOD COMP INTERNAL COMP SGND MARG1 MARG0 SET FB 19.1k 41.2k FCB 10k MPGM TRACK/SS PLLIN C SS 4.7µF INTV CC DRV CC Decoupling ...

Page 10

LTM4606 operaTion Power Module Description The LTM4606 is a standalone non-isolated switching mode DC/DC power supply. It can deliver output current with some external input and output capacitors. This module provides precisely regulated output voltage ...

Page 11

The typical LTM4606 application circuit is shown in Fig- ure 20. External component selection is primarily deter- mined by the maximum load current and output voltage. Refer to Table 2 for specific external capacitor requirements for a particular ...

Page 12

LTM4606 applicaTions inForMaTion Without considering the inductor ripple current, the RMS current of the input capacitor can be estimated as: I OUT(MAX) I • D • 1– CIN(RMS) η In the above equation, η is the estimated ...

Page 13

Figure 3. Normalized Output Ripple Current vs Duty Cycle, Dlr = V Fault ...

Page 14

LTM4606 applicaTions inForMaTion Output Voltage Tracking Output voltage tracking can be programmed externally using the TRACK/SS pin. The output can be tracked up and down with another regulator. Figure 4 shows an example of coincident tracking where the master regulator’s ...

Page 15

PLLIN The power module has a phase-locked loop comprised of an internal voltage controlled oscillator and a phase detector. This allows the internal top MOSFET turn- locked to the rising edge of the external clock. The ...

Page 16

LTM4606 applicaTions inForMaTion 2.5 2.0 12V LOSS 1.5 1.0 0 OUTPUT CURRENT (A) Figure 6. 1.5V Power Loss 1.5V , 0LFM 1 IN OUT 5V , 1.5V ...

Page 17

IN OUT 12V , 3.3V , 200LFM IN OUT 12V , 3.3V , 400LFM IN OUT AMBIENT TEMPERATURE (°C) Figure 12. No Heat ...

Page 18

LTM4606 applicaTions inForMaTion Table 2. Output Voltage Response vs Component Matrix (Refer to Figure 20) TYPICAL MEASURED VALUES C VENDORS PART NUMBER OUT1 TAIYO YUDEN JMK316BJ226ML-T501 (22µF , 6.3V) TAIYO YUDEN JMK325BJ476MM-T (47µF , 6.3V) TDK C3225X5R0J476M (47µF , 6.3V) ...

Page 19

Table 3. 1.5V Output DERATING CURVE V (V) IN Figures Figures Figures Figures Figures Figures ...

Page 20

LTM4606 applicaTions inForMaTion Frequency Adjustment The LTM4606 is designed to typically operate at 800kHz across most input conditions. The f open or decoupled with an optional 1000pF capacitor. The switching frequency has been optimized for maintaining constant output ripple noise ...

Page 21

Typical applicaTions 10V TO 28V C IN 10µF 35V CERAMIC x2 TRACK/SS CONTROL 4.5V TO 28V C IN 10µF 35V CERAMIC OUT C1 10µ PLLIN 100k 100k PGOOD OUT RUN ...

Page 22

LTM4606 Typical applicaTions 4.5V TO 28V C IN 10µF 35V CERAMIC 4.5V TO 28V + 2-PHASE OSCILLATOR + V OUT1 GND OUT2 C7 R5 0.1µF 118k SET MOD LTC6908 OUT CLOCK SYNC C1 10µF R4 ...

Page 23

Typical applicaTions 28V + 2-PHASE OSCILLATOR + V OUT1 GND OUT2 C9 R5 0.1µF 118k SET MOD LTC6908-1 Figure 22. 2-Phase, 3.3V and 2.5V Outputs at 6A with Tracking and Margining 3.3V C3 10µF CLOCK SYNC ...

Page 24

LTM4606 Typical applicaTions 4.5V TO 28V + 2-PHASE OSCILLATOR + V OUT1 C9 GND OUT2 R5 0.1µF 182k SET MOD LTC6908-1 Figure 23. 2-Phase, 1.8V and 1.5V Outputs at 6A with Tracking and Margining 24 1.8V C3 10µ ...

Page 25

DescripTion PIN NAME ...

Page 26

LTM4606 package DescripTion bbb 6.9850 5.7150 4.4450 3.1750 1.9050 0.6350 0.0000 0.6350 1.9050 3.1750 4.4450 5.7150 6.9850 4606fb ...

Page 27

REV DATE DESCRIPTION A 3/10 Change to Features. Change to Absolute Maximum Ratings. Changes to Electrical Characteristics. Changes to Related Parts. B 3/11 Text updated throughout the data sheet. Graph replaced on the front page, Figure 2, and ...

Page 28

... LTM8033 3A EMC DC/DC µModule Regulator 28 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● COMMENTS Synchronizable, PolyPhase Operation, LTM4601-1/LTM4601A-1 Version Has No Remote Sensing, LGA Package 4.5V ≤ V ≤ 26.5V, 0.8V ≤ LGA Package 2.375V ≤ V ≤ 5.5V, 0.8V ≤ 2.375V ≤ ...

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