ICE2A165 based switching power supply application circuit diagram

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Overview:
This paper introduces a new power integrated block ICE2A165, which uses a ICE2A165 to design a switching power supply. The ICE2A165 incorporates a field-effect switching tube that directly excites the switching transformer to operate, and is complemented by a precision three-terminal comparator and optocoupler to construct a high-performance switching power supply. By properly selecting the parameters of the external components, the switching power supply can have a wide voltage regulation range and relatively sensitive protection characteristics. This not only broadens the applicability of the power supply to the mains, but also reduces the probability of failure. Practice shows that the switching power supply based on ICE2A165 can stably output +5 V and +12V in 110~240V AC environment, and the circuit is also stable and reliable for a long time.
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