I am using a 2N2222 transistor to switch on and off the input supply of boost converter. The output of boost converter is powering my RF transmitter and voltage regulator which is used to provide 5V to four addressable LEDs.
My controller works on 3.3V logic level, so the transistor's base is operated at 3.3V. The output of the boost converter is set to 12 volts.
My problem is I could not get a stable voltage at the boost converter output.
My transmitter does not work properly. It is missing data. (It works just fine when I don't use a transistor to switch the supply.)
Another problem is around 0.7 volt is dropping across the transistor, which is not suitable while using 3.7 volt Li-Ion cell as it further reduces the input voltage to the boost converter which is used to boost the voltage to 12 volts.
The LEDs I am using are fluctuating when data is transmitted.
My first guess was that it is due to the current capacity of transistor, so I switched to a TIP122 which is a Darlington pair transistor. Thr problem is still there.
My aim is to reduce power consumption when the RF transmitter is not used so I want to cut off power from rest circuitry.
What circuitry or component or method I should be using to switch the power supply without affecting the transmitted data?