It is not the problem with resistor divider. Try this for crosschecking
1) You should get 3.6V if you put all three resistors value 470KΩ
2) You should get 6V when 470KΩ series on top side and 470KΩseries on bottom side
Please check the DC resistance of the resistor by multimeter!!!!!!!!!!!!
Check the inductance value in LCRR meter
Means the boost is off all time. EN is shown as a separate port in your schematic, not tied to VIN. Is it activated at all?under all the conditions, i am getting vout @ 3.05V
Simply expectable. It's impossible to measure resistors in circuit without special requisites (and profound knowledge how-to), just forget about it.i have also checked the resistance of a resistor 470K.. it shows a proper value but when the same resistor is soldered to the PCB, it shows 234K.. how is it possible.
You should also check all device terminal voltages for plausibility.
If EN is activated and the 4.7 µH inductor is a suitable device, other possible explanations for failure are:
- soldering fault
- wrong pin order
- boost converter damaged
attaching the circuit..Can you show a circuit photo?
3.2 Ground Pin (GND)
The ground or return pin is used for circuit ground connection. Length of trace from input cap return, output cap return, and GND pin should be made as short as possible to minimize noise on the GND pin.
agreed with you...I wonder where the output capacitor is placed?
I believe the layout is far from fulfilling this datasheet requirement:
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?