ZXLD1370_1103 DIODES [Diodes Incorporated], ZXLD1370_1103 Datasheet - Page 17

• Manufacturer Part Number: ZXLD1370_1103
• Description: 60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER WITH AEC-Q100
• Manufacturer: DIODES [Diodes Incorporated]

ZXLD1370
Document number: DS32165 Rev. 4 - 2
Applications Information
In the case of the Buck-boost topology, the following graphs guide the designer to select the inductor for a target frequency
of 400kHz (figure 23) or higher than 500kHz (figure 24).
15
13
11
9
7
5
3
1
Figure 23. 350mA Buck-Boost mode inductor selection for target frequency 400kHz
15
13
11
9
7
5
3
1
0
Figure 22. 750mA Buck mode inductor selection for target frequency > 500kHz
0
L=22µH
10
(Continued)
10
ZXLD1370 Buck-Boost Mode 350mA Minimum Recommended Inductor
L=33µH
ZXLD1370 Buck Mode 750mA Minimum Recommended Inductor
L=33µH
20
20
Target Switching Frequency - 400kHz
Target Switching Frequency > 500kHz
www.diodes.com
L=47µH
Supply Voltage (V)
Supply Voltage (V)
L=47µH
17 of 36
30
30
L=68µH
40
40
Diodes Incorporated
A Product Line of
50
L=100µH
50
60
60
© Diodes Incorporated
ZXLD1370
March 2011