Datasheet LT8642S (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | 18V, 10A Synchronous Step-Down Silent Switcher 2 |
| Pages / Page | 26 / 9 — TYPICAL PERFORMANCE CHARACTERISTICS. Conducted EMI Performance. Radiated … |
| File Format / Size | PDF / 1.4 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Conducted EMI Performance. Radiated EMI Performance
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Text Version of Document
LT8642S
TYPICAL PERFORMANCE CHARACTERISTICS Conducted EMI Performance
60 50 40 30 V) 20 10 0 AMPLITUDE (dBµ –10 –20 FORCED CONTINUOUS MODE –30 SPREAD SPECTRUM MODE –40 0 3 6 9 12 15 18 21 24 27 30 FREQUENCY (MHz) DC2560A DEMO BOARD 8642S G37 (WITH EMI FILTER INSTALLED) 12V INPUT TO 1.2V OUTPUT AT 10A, fSW = 2MHz
Radiated EMI Performance (CISPR32 Radiated Emission Test with Class B Limits)
50 WITH EMI FILTER 45 40 CLASS B LIMIT 35 V/m) 30 25 20 15 10 AMPLITUDE (dBµ 5 0 SPREAD SPECTRUM MODE –5 FIXED FREQUENCY MODE –10 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) DC2560A DEMO BOARD 8642S G38 12V INPUT TO 1.2V OUTPUT AT 10A, fSW = 2MHz 50 NO EMI FILTER 45 40 CLASS B LIMIT 35 V/m) 30 25 20 15 10 AMPLITUDE (dBµ 5 0 SPREAD SPECTRUM MODE –5 FIXED FREQUENCY MODE –10 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) DC2560A DEMO BOARD 8642S G39 12V INPUT TO 1.2V OUTPUT AT 10A, fSW = 2MHz Rev 0 For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Applications Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Conducted EMI Performance
60 50 40 30 V) 20 10 0 AMPLITUDE (dBµ –10 –20 FORCED CONTINUOUS MODE –30 SPREAD SPECTRUM MODE –40 0 3 6 9 12 15 18 21 24 27 30 FREQUENCY (MHz) DC2560A DEMO BOARD 8642S G37 (WITH EMI FILTER INSTALLED) 12V INPUT TO 1.2V OUTPUT AT 10A, fSW = 2MHz
Radiated EMI Performance (CISPR32 Radiated Emission Test with Class B Limits)
50 WITH EMI FILTER 45 40 CLASS B LIMIT 35 V/m) 30 25 20 15 10 AMPLITUDE (dBµ 5 0 SPREAD SPECTRUM MODE –5 FIXED FREQUENCY MODE –10 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) DC2560A DEMO BOARD 8642S G38 12V INPUT TO 1.2V OUTPUT AT 10A, fSW = 2MHz 50 NO EMI FILTER 45 40 CLASS B LIMIT 35 V/m) 30 25 20 15 10 AMPLITUDE (dBµ 5 0 SPREAD SPECTRUM MODE –5 FIXED FREQUENCY MODE –10 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) DC2560A DEMO BOARD 8642S G39 12V INPUT TO 1.2V OUTPUT AT 10A, fSW = 2MHz Rev 0 For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Applications Related Parts
