Dear Team,
Could you help to review the schematic as below?
VCC_1V8
Vin=12V
Vout=1.8V
Iout=2.488(MAX)
ILIM=5.5A
Frequency=1MHz
Many Thanks,
Jimmy
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Hi Jimmy,
I am working on this and will get back to by End of Week
Thank you
Savith
Hi Savith,
Thanks for your quickly reply.
I have review it with datasheet. There is no questions from my side.
Could you help to review it within today. Because customer schematic need to fix on tomorrow.
Many Thanks,
Jimmy
Hi Jimmy
when you mention VCC_1V8 is this ext. bias voltage to chip, because when I see the schematic AVIN is powered through 12Vin
can you clarify on this
_Savith
Hi Jimmy
I did go through the schematic
1. does SCL and SDA has pull up resistors ?
2. I have assumed 0.5A load step and found the Cout capacitance is sufficient,
if the step is larger may need more Cout.
Thank you
Savith
Hi Savith,
Sorry, I can't get your point.
Can you please explain it more clearly? Spec as below.
VCC_1V8
Vin=12V
Vout=1.8V
Iout=2.488(MAX)
ILIM=5.5A
Frequency=1MHz
Many Thanks,
Jimmy
Hi Jimmy
the blow are some of the things I have noticed after looking at the schematic and the information provided
1. What is VCC_1V8?(is it the name of the rail)
2. does SCL and SDA pins have pull up resistors
3. to calculate the Cout we need Vout ripple and also transients ,
for transients I have assumed 0.5A load step, if the load step is higher than what I have assumed the application may need more output capacitance
Thank you
Savith
Hi Savith,
We appreciated your great support always.
Iout MAX= 2.5, load step=1.25 , how much Cout capacitor is needed? could you tell me? Thanks.
when you mention VCC_1V8 is this ext. bias voltage to chip, because when I see the schematic AVIN is powered through 12Vin
can you clarify on this
I don't understand your question. sorry.
Many Thanks,
Jimmy
Hi Jimmy
1. with 1.25A load step the current Cout is sufficient.
2. what does VCC_1V8 mean?
Thankyou
Savith