TPS92518 Measure by EVM 12Vin to 3S1P LED CH1:Vsw1 CH2:PWM1 200Hz

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Presentation transcript:

TPS92518 Measure by EVM 12Vin to 3S1P LED CH1:Vsw1 CH2:PWM1 200Hz CH3:Vboot1 CH4:Vboot1-Vsw

TPS92518 Base on Equation 18 and Vboot-UVLO spec(3.6V~5.2V) Vin 12V , Cboot 0.1uF => Ton_max(typ) is 7.4ms

TPS92518 Q1. Is any side-effect to change Cboot value for keeping 200Hz PWM ? Q2. What condition of TPS92518 could do PWM dimming ratio up to 10,000 : 1 ? Q3. If Vin is 9~16V , PWM frequency is 200Hz , ILED is 2.5A / ch (2S1P) May each output support higher LED current ex: 2.5A or higher ? By changing higher current rating of external MOSFET , Inductor and Diode ??