LM5181 datasheet(21/33 Pages) TI1

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Start 150 kHz

Stop 30 MHz

Average detector

Peak detector

Start 30 MHz

Stop 108 MHz

Average detector

Peak detector

1 Ps/DIV

SW 20V/DIV

1 Ps/DIV

DFLY 5V/DIV

Output Current (mA)

100

200

300

400

500

600

700

D002

VIN = 12V

VIN = 24V

VIN = 36V

VIN = 48V

VIN = 65V

Output Current (mA)

100

200

300

400

500

600

700

4.8

4.85

4.9

4.95

5.05

5.1

5.15

5.2

D003

VIN = 12V

VIN = 24V

VIN = 36V

VIN = 48V

VIN = 65V

LM5181

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SNVSBM6 – APRIL 2020

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9.2.2 Application Curves

Unless otherwise stated, application performance curves were taken at TA = 25°C.

Figure 22. Efficiency (Linear Scale)

Figure 23. Load Regulation (Linear Scale)

VIN = 24 V

IOUT = 0.5 A

Figure 24. Switch Node Voltage

VIN = 24 V

IOUT = 0.5 A

Figure 25. Flyback Diode Voltage

VIN = 24 V

IOUT = 0.5 A

150 kHz to 30 MHz

LIN = 4.7 µH

CIN = 10 µF

Figure 26. CISPR 25 Class 5 Conducted EMI Plot

VIN = 24 V

IOUT = 0.5 A

30 MHz to 108 MHz

LIN = 4.7 µH

CIN = 10 µF

Figure 27. CISPR 25 Class 5 Conducted EMI Plot

LM5181 Datasheet(PDF) 21 Page - Texas Instruments

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