Sourcing Transformerless AC/DC Converter IC
Sourcing Transformerless AC/DC Converter IC
(OP)
I am looking for Transformerless AC/DC Converter IC. Anybody can help me on any semiconductors manufacturer do produce the IC of below rating :-
Input AC :- 220~240 V
Output DC :- 12 V
Output Current : 0.5A-1.0A





RE: Sourcing Transformerless AC/DC Converter IC
If you'd like a discrete suggestion: feed a Zener (12 Volt- 10W) through a resistor serial with a forward diode, and put a proper dc capacitance in parallel with zener to damp the possible ripple.
I hope it would help
Zimbali
RE: Sourcing Transformerless AC/DC Converter IC
RE: Sourcing Transformerless AC/DC Converter IC
There is a Harris HV-2405E. Input: 15Vrms - 275Vrms, Dual output voltages available, Ouput Current up to 50mA Output Voltage 5V to 24V.
There is also a Supertex SR036 and SR037 but Vout is only 3.3V and 5.0V
You can always put a 1:1 transformator if you need a isolation.
I hope this will help you.
RE: Sourcing Transformerless AC/DC Converter IC
RE: Sourcing Transformerless AC/DC Converter IC
combining such an IC and an isolation transformer wouldn't be much usfull. If space is available for a line frequency transformer a step-down transformer with rectifier and one of the commonly used linear or switchmode regulators can be used.
Such ICs are intended only for applications where you need to supply low voltage to parts of a system which is already provided with safety insulation.
RE: Sourcing Transformerless AC/DC Converter IC