Other Parts Discussed in Thread: TPS61161, TPS92391
Hi Team,
Could you check the max operation current for TPS61160?
Many Thanks,
Jimmy
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hi Jimmy, I'm still checking this, will get back to you ASAP.
Regarding the max operation current, there isn't a general max current spec. Once the input voltage, output voltage, inductor value are settled, we can calculate the max output current by Equation 3 and 4. This means in the brightness control by external PWM or digital method, the operation current will not exceed this value.
Hi Mason,
I appreciated your great support!
Our customer application is Vin 6~9V /Vout =20V /Iout is around 500mA.
From the below description. The TPS61161 can't reach our requirements
Please give us the other option for our application.
Many Thanks,
Jimmy
hi Jimmy
Can I ask about the application scenario? How many channels are needed? the 500mA is for one channel?
Hi Mason,
We appreciated your great support!
1.This project is lighting application.
3.Yes .500mA for 1 CH .
2 CH for 500mA is ok to our customer.
Many Thanks,
Jimmy
hello Jimmy
I assume this is for backlight application, not for illumination?
Right now, for backlight products, one option is to use the IC with 200mA per channel, 6 channels. Connect 3 channels to cover 500mA requirement.
I need to double check if this is possible to operate in this way and then get back to you ASAP.
thank you
Mason
hi Jimmy
According to your requirement, TPS92391 can be used. You can set the R_LED_SET as 42.2k to configure the 2 channels operation mode shown below.
thanks
Mason