1. We are designing a power supply with <2W output power, do we need to include Flyback transformer for the design ? What are the possible hazard if we design power supply without using flyback transformer.
2. Which is the best part to use when battery charging need to be done. The rechargeable battery shall be charged at 20mA rate with 3.3V.
3. The battery estimated capacity would be 500mAh.
3. Is there any Comparison spreadsheet of all devices based on Input voltage , Power Wattage, Efficiency.