Table of Contents
Advertisement
ILD8150 80 V high side buck LED driver IC with hybrid dimming
Circuit description
For lower output voltage ripple a bigger output capacitor can be used. Because the value of this capacitor is
relatively low even for low ripple demands, a MLCC capacitor is the best choice in terms of cost, lifetime and
ESR. Switching frequency is very high and can be visible, so output capacitor may not be used just only 10 nF to
improve EMI.
2.5.5
Bootstrap capacitor C
−9
2.5·10
= 2.5 nF (deviation voltage assumed as 1 V, was chosen as 0.22 µ�� 25 V MLCC).
��
>
��������
1 ��
2.5.6
V
capacitor C
CC
A 100 nF 25 V MLCC capacitor was selected, which has to be placed close to pin 7.
Application Note
selection
BOOT
selection
VCC
14 of 28
V 1.0
2019-01-23
Advertisement
Table of Contents
