Make a PWM Controlled Cell Phon Battery Charger using IC555

How to Make a Simple PWM Controlled DC to DC Cell Phone Charger Circuit vy using IC 555 at Home

By: Alok kumar

Today we are going to learn how to make a very simple PWM DC to DC Cell phon charger circuit. The circuit is a simple cell phone charger that may be operated with any DC source, from a car or a motorcycle battery or from any ordinary 12 V AC DC adapter. Nowadays we find most of the vehicles have their in built cell phone battery charger units which surely becomes very handy for travelers who mostly remain outdoors travelling in their vehicle.
This PWM cell phone battery charger circuit is as good as the conventional chargers which come fitted inside the cars and bikes. Moreover the circuit can be simply integrated to ones own vehicle if the feature is not originally available in the vehicle. Alternatively one may think of manufacturing the present unit and selling them in the market as an automobile cell phone charger and earn some hard bucks.

220V/ 110V AC to 5V 1Amp Cell Phone battery Charger Circuit

220V/ 110V AC to 5V DC 1Amp SMPS (switching mode power supply) Cell Phone battery Charger Circuit

By: Alok kumar

This post meant to explains how to make a simple, cheap, small or compact yet extremely reliable smps or switching mode based 220V/120V mains to 5 volt dc operated cell phone battery charger circuit for high amperage batteries present in android and tabs these days.

Here we are going to use a simple IC having built in mosfet switching control circuit and also very reliable which allowes us to make a very compact but reliable circuit.

The TNY series of tiny switch ICs provide us with an option of making perhaps the smallest possible smps or switch mode based circuits with higher reliability. The tiny switch series includes the following ICs some of them are: TNY267P, TNY263, TNY264, TNY265, TNY266, TNY267, TNY268, TNY280.

The above ICs have an integrated built- in mosfet switching control circuit, there is also protection against over current and thermal overshoot, along with rugged voltage and current specifications provided. The IC comes in a DIP8 package that's exactly how a 555 is enclosed. The maximum tolerable voltage limit of the TNY series ICs is a massive 700V, that is a margin that id way too beyond our normal household AC specification. The operating frequency of this IC is at about 132kHz which is perfect for low power specification. The IC is specifically designed and built for implementing compact and reliable 120/220V mains operated SMPS flyback converter.

There may be a huge application for this switch mode power supply smps, it could be best used as a mains operated 5V cell phone charger circuit.