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LTM8049 데이터시트(PDF) 20 Page - Linear Technology |
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LTM8049 데이터시트(HTML) 20 Page - Linear Technology |
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20 / 34 page ![]() LTM4651 20 4651f For more information www.linear.com/LTM4651 APPLICATIONS INFORMATION Figure 4. Normalized Input RMS Ripple Current vs Duty Cycle for One to Six LTM4651s (Phases) Figure 6. Radiated Emissions Scan of the LTM4651 Producing –24VOUT at 2A, from 25VIN. DC2328 Hardware. fSW = 1.2MHz. Measured in a 10m Chamber. Peak Detect Method Figure 5. Radiated Emissions Scan of the LTM4651. Producing –24VOUT at 1A, from 12VIN. DC2328A Hardware. fSW = 1.2MHz. Measured in a 10m Chamber. Peak Detect Method 0.75 0.8 4651 F04 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 (–VOUT– / VIN – VOUT–) 0 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 Figure 8. Radiated Emissions Scan of the LTM4651. Producing –12VOUT at 2A, from 12VIN. DC2328A Hardware. fSW = 700kHz. Measured in a 10m Chamber. Peak Detect Method Figure 7. Radiated Emissions Scan of the LTM4651. Producing –24VOUT at 2A, from 34VIN. DC2328A Hardware. fSW = 1.2MHz. Measured in a 10m Chamber. Peak Detect Method 50 60 70 40 30 20 10 –10 0 FREQUENCY (MHz) 30 830 130 230 330 430 530 630 730 930 1000 4651 F05 [1] HORIZONTAL [2] VERTICAL QPK LIMIT FORMAL MEAS DIST 10m SPEC DIST 10m + 50 60 70 40 30 20 10 –10 0 FREQUENCY (MHz) 30 830 130 230 330 430 530 630 730 930 1000 4651 F06 [1] HORIZONTAL [2] VERTICAL QPK LIMIT FORMAL MEAS DIST 10m SPEC DIST 10m + 50 60 70 40 30 20 10 –10 0 FREQUENCY (MHz) 30 830 130 230 330 430 530 630 730 930 1000 4651 F07 [1] HORIZONTAL [2] VERTICAL QPK LIMIT FORMAL MEAS DIST 10m SPEC DIST 10m + 50 60 70 40 30 20 10 –10 0 FREQUENCY (MHz) 30 830 130 230 330 430 530 630 730 930 1000 4651 F08 [1] HORIZONTAL [2] VERTICAL QPK LIMIT FORMAL MEAS DIST 10m SPEC DIST 10m + |
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