TS19370 Ver la hoja de datos (PDF) - TSC Corporation
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TS19370 Datasheet PDF : 8 Pages
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TS19370
Boost (Step-up) WLED Driver with OVP
Application Information (Continue)
2. Using a Filtered PWM Signal
The filtered PWM signal can be considered as an adjustable DC voltage. It can be used to replace the variable
DC voltage source in dimming control. The circuit is shown as follow:
Dimming Control using a Filtered PWM Signal
Duty
Iout ( mA)
0%
20
20%
17.4
30%
15
40%
12.4
50%
10
60%
8
70%
6.4
80%
4.07
100%
0
PWM : 2V ; 1KHz ; Vin=3.6V
6/8
Version: D08
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