1.2V battery to 3.3V and 5.0V output power pcb design

Recent needs in low power and single battery ( 1.2V) design demand a power converter circuit. A recent requirement for a handheld FM receiver ( multichannel) necessitated
the design of a voltage supply converter using off the shelf devices. After a thorough search for off the shelf devices which could be used to realize such a converter a device was chosen from a popular manufacturer and the design was started. Here are some issues that we encountered, ( perhaps not new, but nonetheless need to be mentioned). Our biggest challenges, suprizingly enough had very little to do with the IC that we used. This was because the vendor had excellent technical support and application notes and had a well organized technical support environment. Our requests were handled within a 24 to 48 hour turnaround. The challenges that were difficult had to do with selecting, acquiring and using the passive components. These were harder to find and technical support left much to be desired. In spite of these issues we managed to finish the design in time and test the board. It worked quite well and provided 3.3V at close to 1.0A and 5.0V at close to 0.5A as needed with a 20% margin. Interested readers are invited to contact us through our website at http://www.signalpro.biz.

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