ZXLD1374

60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST

LED DRIVER CONVERTER WITH AEC-Q100

ZXLD1374

Document number: DS35032 Rev. 2 - 2

20 of 37

www.diodes.com

March 2011

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400 kHz, the Ideal inductor size is L= 33µH.

The same kind of graphs can be used to select the right inductor for a Buck configuration and a LED current of 750mA, as

shown in figures 34 and 35.

 

 

0

1020

30

405060

1

3

5

7

9

11

13

15

Supply Voltage (V)

L=33µH

L=47µH

L=68µH

L=100µH

Figure 34. 750mA Buck mode inductor selection for target frequency 400kHz

 

 

0

1020

30

4050

60

1

3

5

7

9

11

13

15

Supply Voltage (V)

L=10µH

L=22µH

L=33µH

L=47µH

Figure 35: 750mA Buck mode inductor selection for target frequency > 500kHz