Measurement Results With Reference Design; Led Current Vs Supply Voltage - Infineon ILD8150 Operation, Design Manual And Performance

ILD8150 80 V high side buck LED driver IC with hybrid dimming

Measurement results with reference design

4 Measurement results with reference design
Table 1 Typical condition for measurement
V
IN
70 V
Figure 17 shows the actual operating waveforms. The actual measured LED current is 1 A. The switching
frequency is 85 kHz and the internal DMOS transistor on the duty cycle is 74 percent.
Iout
Vsw
Normal operation waveform
Figure 17
4.1

LED current vs supply voltage

ILD8150 provides high output current accuracy despite the changes in supply voltage. Figure 18 shows the
output current vs supply voltage in the range 52 V to 70 V. Over the supply range, the output LED current only
deviates in the range of 1 percent.
Application Note
R
CS
0.36 Ω
Inductance
860 µH
17 of 28
LED load
17 pcs
V 1.0
2019-01-23