Linear Technology LTM4627EV Demo Board, 20V, 15A Step-Down µModule Regulator DC1669A DC1669A Ficha De Dados

LTM4627

1

4627fc

For more information 

www.linear.com/LTM4627

15A DC/DC µModule

Regulator

The 

 is a complete 15A output high efficiency 

switch mode DC/DC power supply. Included in the pack-

age are the switching controller, power FETs, inductor 

and compensation components. Operating over an input 

voltage range from 4.5V to 20V, the LTM4627 supports an 

output voltage range of 0.6V to 5V, set by a single external 

resistor. Only a few input and output capacitors are needed. 
Current mode operation allows precision current sharing 

of up to four LTM4627 regulators to obtain 60A output. 

High switching frequency and a current mode architecture 

enable a very fast transient response to line and load 

changes without sacrificing stability. The device supports 

frequency synchronization, multiphase/current sharing 

operation, Burst Mode operation and output voltage track-

ing for supply rail sequencing.  
The LTM4627 is offered in thermally enhanced 15mm 

× 

15mm 

× 4.32mm LGA and 15mm × 15mm × 4.92mm BGA 

packages. The LTM4627 is available with SnPb (BGA) or 

RoHS compliant terminal finish.

L

, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, µModule and PolyPhase 

are registered trademarks and LTpowerCAD is a trademark 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.

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  Complete 15A Switch Mode Power Supply 

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  Wide Input Voltage Range: 4.5V to 20V

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  0.6V to 5V Output Range

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  ±1.5% Total DC Output Error

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  Differential Remote Sense Amplifier for Precision 

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  Current Mode Control/ Fast Transient Response

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  Frequency Synchronization

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  Parallel Current Sharing (Up to 60A) 

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  Selectable Pulse-Skipping or Burst Mode

®

 Operation

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  Soft-Start/Voltage Tracking

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  Up to 93% Efficiency (12V

IN

, 3.3V

OUT

)

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  Overcurrent Foldback Protection

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  Output Overvoltage Protection 

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  Small Surface Mount Footprint, Low Profile  

15mm 

× 15mm × 4.32mm LGA and  

15mm 

× 15mm × 4.92mm BGA Packages

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  Telecom Servers and Networking Equipment

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  ATCA and Storage Cards

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  Industrial Equipment

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  Medical Systems

COMP

TRACK/SS

RUN

f

SET

MODE_PLLIN

PGOOD

V

OUT

V

OUT_LCL

DIFF_OUT

V

OSNS

+

V

OSNS

–

VFB

LTM4627

V

IN

10k

R

FB

**

60.4k

100k

22µF

16V

×3

82pF

0.1µF

470µF

6.3V

100µF*

6.3V

V

OUT

1.2V

15A

INTV

CC

EXTV

CC

*  SEE TABLE 4

**  SEE TABLE 1

4627 TA01a

V

IN

4.5V TO 16V

SGND

GND

150pF

+

LOAD CURRENT (A)

0

50

EFFICIENCY (%)

55

65

70

75

85

4

8

10

4627 TA01b

60

90

95

80

2

6

12

14

16

12V

IN

, 1.2V

OUT

5V

IN

, 1.2V

OUT