LTM4613 Ver la hoja de datos (PDF) - Linear Technology

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LTM4613

EN55022B Compliant 36VIN, 15VOUT, 8A, DC/DC µModule Regulator

Linear Technology 

LTM4613

FEATURES

EN55022B Compliant

36VIN, 15VOUT, 8A,

DC/DC µModule Regulator

DESCRIPTION

n Complete Low EMI Switch Mode Power Supply

n EN55022 Class B Compliant

n Wide Input Voltage Range: 5V to 36V

n 8A Output Current

n 3.3V to 15V Output Voltage Range

n Low Input and Output Referred Noise

n Output Voltage Tracking and Margining

n PLL Frequency Synchronization

n 2% Maximum Total DC Error

n Power Good Tracks with Margining

n Current Foldback Protection

n Parallel/Current Sharing

n Ultrafast Transient Response

n Current Mode Control

n Programmable Soft-Start

n Output Overvoltage Protection

n –55°C to 125°C Operating Temperature Range

(LTM4613MPV, LTM4613MPY)

n 15mm × 15mm × 4.32mm LGA and

15mm × 15mm × 4.92mm BGA Packages

n SnPb (BGA) or RoHS Compliant (LGA and BGA) Finish

APPLICATIONS

n Telecom and Networking Equipment

n Industrial and Avionic Equipment

n RF Systems

The LTM®4613 is a complete, ultralow noise, 8A switch

mode DC/DC power supply. Included in the package are the

switching controller, power FETs, inductor and all support

components. Operating over an input voltage range of 5V

to 36V, the LTM4613 supports an output voltage range of

3.3V to 15V, set by a single external resistor. 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 onboard input filter and noise cancellation circuits

achieve low noise coupling, thus effectively reducing

the electromagnetic interference (EMI)—see Figure 7.

Furthermore, the DC/DC µModule® regulator can be syn-

chronized with an external clock to reduce undesirable

frequency harmonics and allow PolyPhase® operation for

high load currents.

The LTM4613 is offered in 15mm × 15mm × 4.32mm

LGA and 15mm × 15mm × 4.92mm BGA packages. The

LTM4613 is available with SnPb (BGA) or RoHS compli-

ant terminal finish.

L, LT, LTC, LTM, µModule, PolyPhase, Linear Technology, and the Linear logo are registered

trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

TYPICAL APPLICATION

VIN

24V

TO 36V

12V/8A Ultralow Noise µModule with 24V to 36V Input

CLOCK SYNC

CIN

0.1µF

51k

10µF

×3

VIN PLLIN

PGOOD

VOUT

RUN LTM4613

COMP

INTVCC

DRVCC

fSET

TRACK/SS

VD

VFB

FCB

MARG0

MARG1

MPGM

SGND PGND

22pF

5.23k

MARGIN

CONTROL

392k

5% MARGIN

4613 TA01

VOUT

12V

8A

COUT

Radiated Emission Scan with 24VIN to 12VOUT at 8A

70

60

50

40

30

20

10

0

–10

30

EN55022B LIMIT

226.2 422.4 613.6 814.3 1010.0

FREQUENCY (MHz)

4613 TA01b

4613fd

For more information www.linear.com/LTM4613

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