In traditional isolated high voltage flyback converters, tight regulation is achieved using optocouplers to transfer regulation information from the secondary-side reference circuitry to the primary side.
The problem is that optocouplers add significant complexity to isolated designs: there is propagation delay, aging, and gain variation, all of which complicate power supply loop compensation and can reduce reliability. Moreover, during startup, either a bleeder resistor or a high voltage start-up circuit is required to initially power up the IC. Unless an additional high voltage MOSFET is added to the start-up components, the bleeder resistor is a source of unwelcome power loss.
Read this design note from Analog Devices to learn about the LT8316, a micropower, high voltage flyback controller that does not require an optocoupler, complicated secondary-side reference circuitry, or additional start-up components.
![LT8316EFE#PBF]()
![LT8316IFE#PBF]()
Read this design note from Analog Devices to learn about the LT8316, a micropower, high voltage flyback controller that does not require an optocoupler, complicated secondary-side reference circuitry, or additional start-up components.
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