LP8867-Q1: How to calculate the power disspation of LP8867-Q1?

Hi

Could you tell me your application and your requirement of your design.

Hi Frank

the application is IVI display backlight.

1. input voltage range（7-18V）
2. typical input voltage （12V）
3. FSW （500khz）
4. output volatge  (30±3V)
5. 3ch LED
6. load current 80mA*3=240mA
7. Ambient Temperature  85°C

My customer wants to know how to calculation the total power disspation.

thank you for your support~

Hi Frank

Would you mind replay me today?

my customer wants to get the answer ASAP~

TKS

Hi 

vout based on the vboost you set, you can reference the datasheet's recommend boost output voltage to calculate the output voltage.

Vout=vboost-vled_forward

Do you have some other question?Please tell me your consider

Hi Frank

1. Can you provide the tr, tf, andQGate of LP8867 internal MOSFET?

2. The output of the boost is Adaptive Voltage Control.

becasue of the difference vled_forward of different channel, the vout_x is different.

how can we calculate the accurate power disspation?

TKS~

Hi 

Could you offer me your e-mail, some detail paramerter I can't show here.

HI

evan.miao@macnica.com

TKS~