The power supply block of pcb board for sensor calibration

Thread Starter

flyBird

Joined Sep 28, 2022
11
I know a pcb board for sensor calibration is generally built of 8 blocks:
a. power supply
b. usb interface
c. column select
d. row drive
e. sensor connect
f. signal conditioning
g. programmable logic
h. adc reference

Have question for the power supply block. Can someone draw the schematic for the block power supply?
 

LesJones

Joined Jan 8, 2017
4,174
Part 2 is a switch mode step up regulator stepping up the unspecified input voltage (PVIN) to 6.95 volts.
Part 3 is a linear regulator regulating the voltage from JP2 pin 2 down to 3.3 volts.
If you want more details read the datasheets on the two regulator ICs.

Les.
 

Thread Starter

flyBird

Joined Sep 28, 2022
11
Part 2 is a switch mode step up regulator stepping up the unspecified input voltage (PVIN) to 6.95 volts.
Part 3 is a linear regulator regulating the voltage from JP2 pin 2 down to 3.3 volts.
If you want more details read the datasheets on the two regulator ICs.

Les.
Thank you. I will ask if I have another questions after reading the datasheets on the two regulator ICs.
 

AnalogKid

Joined Aug 1, 2013
10,986
What is PVIN - ?

Also, JPPOWER looks like it has two power outputs but no GND reference. Is it in fact an output? If so, to what?

ak
 
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