ZXLD1374_11 DIODES [Diodes Incorporated], ZXLD1374_11 Datasheet - Page 22

• Manufacturer Part Number: ZXLD1374_11
• Description: 60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST
• Manufacturer: DIODES [Diodes Incorporated]

ZXLD1374
Document number: DS35032 Rev. 2 - 2
Applications Information
For example, in a Buck-boost configuration (V
is around 400kHz, the Ideal inductor size is L= 33µH. The same size of inductor can be used if the target frequency is higher
than 500kHz driving 6LEDs with a current of 350mA from a V
In the case of the Boost topology, the following graphs guide the designer to select the inductor for a target frequency of
400kHz (figure 38) or higher than 500kHz (figure 39).
15
13
11
15
13
11
9
7
5
3
1
9
7
5
3
1
0
0
Figure 39: 350mA Boost mode inductor selection for target frequency > 500kHz
Figure 38: 350mA Boost mode inductor selection for target frequency 400kHz
L=22µH
L=22µH
10
10
(Continued)
L=33µH
60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST
L=33µH
IN
=10-18V and 4 LEDs), with a load current of 350mA; if the target frequency
20
20
L=47µH
www.diodes.com
L=47µH
Supply Voltage (V)
Supply Voltage (V)
22 of 37
IN
LED DRIVER CONVERTER WITH AEC-Q100
=12-24V.
30
30
Diodes Incorporated
40
40
A Product Line of
50
50
© Diodes Incorporated
ZXLD1374
March 2011
60
60