LT8686S

9

Rev. 0

For more information www.analog.com

TYPICAL PERFORMANCE CHARACTERISTICS

Radiated EMI Performance Vertical Polarization

(CISPR25 Radiated Emission Test with Class 5 Peak Limits)

Radiated EMI Performance Horizontal Polarization

(CISPR25 Radiated Emission Test with Class 5 Peak Limits)

DC3126A DEMO BOARD

(WITH EMI FILTER INSTALLED)

CLASS 5 PEAK LIMIT

SPREAD SPECTRUM MODE

FIXED FREQUENCY MODE

FREQUENCY (MHz)

0

100

200

300

400

500

600

700

800

900

1000

–10

–5

0

5

10

15

20

25

30

35

40

45

50

8686S G34

VEMI = 14V, VOUT1 = 5V, VOUT2 = 3.3V, VOUT3 = 1.8V, VOUT4 = 1.2V

IOUT1 = 2A – IVIN3 – IVIN4 – IBIAS, IOUT2 = IOUT3 = IOUT4 = 2A, fSW = 2MHz

DC3126A DEMO BOARD

(WITH EMI FILTER INSTALLED)

VEMI = 14V, VOUT1 = 5V, VOUT2 = 3.3V, VOUT3 = 1.8V, VOUT4 = 1.2V

CLASS 5 PEAK LIMIT

SPREAD SPECTRUM MODE

FIXED FREQUENCY MODE

FREQUENCY (MHz)

0

100

200

300

400

500

600

700

800

900

1000

–10

–5

0

5

10

15

20

25

30

35

40

45

50

8686S G35

IOUT1 = 2A – IVIN3 – IVIN4 – IBIAS, IOUT2 = IOUT3 = IOUT4 = 2A, fSW = 2MHz

TA = 25°C, VIN1 = VIN2 = 12V, VIN3 = VIN4 = 3.3V,

fSW = 2MHz, unless otherwise noted.