LTM4613 datasheet(19/32 Pages) LINER

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LTM4653

Rev 0

For more information www.analog.com

APPLICATIONS INFORMATION

Figure 3. Normalized Input RMS Ripple Current vs Duty Cycle for One to Six LTM4653s (Phases)

Figure 4. Radiated Emissions Scan of the LTM4653. Producing

24VOUT at 4A, from 29.5VIN. DC2327A Hardware. fSW = 1.2MHz.

Measured in a 10m Chamber. Peak Detect Method

0.75 0.8

4653 F03

0.7

0.65

0.6

0.55

0.5

0.45

0.4

0.35

0.3

0.25

0.2

0.15

0.1

0.85 0.9

DUTY CYCLE

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

1-PHASE

2-PHASE

3-PHASE

4-PHASE

6-PHASE

–10

FREQUENCY (MHz)

830

130

230

330

430

530

630

730

930 1000

4653 F04

[1] HORIZONTAL

[2] VERTICAL

QPK LIMIT

FORMAL

MEAS DIST 10m

SPEC DIST 10m

–10

FREQUENCY (MHz)

830

130

230

330

430

530

630

730

930 1000

4653 F05

[1] HORIZONTAL

[2] VERTICAL

QPK LIMIT

FORMAL

MEAS DIST 10m

SPEC DIST 10m

–10

FREQUENCY (MHz)

830

130

230

330

430

530

630

730

930 1000

4653 F06

[1] HORIZONTAL

[2] VERTICAL

QPK LIMIT

FORMAL

MEAS DIST 10m

SPEC DIST 10m

Figure 5. Radiated Emissions Scan of the LTM4653 Producing

24VOUT at 3.5A, from 48VIN. DC2327A Hardware. fSW = 1.2MHz.

Measured in a 10m Chamber. Peak Detect Method

Figure 6. Radiated Emissions Scan of the LTM4653. Producing

12VOUT at 3A, from 58VIN. DC2327A Hardware. fSW = 1.2MHz.

Measured in a 10m Chamber. Peak Detect Method

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