DC2718A

Demonstration circuit 2718A is a non-opto flyback converter featuring the LT8316. The demo board outputs 12V and maintains tight regulation with a load current from 30mA to 3A. It is optimized to operate over a wide 100V to 600V DC input voltage range. Output voltage accuracy stays within ±5% over the entire input voltage and load range. The LT®8316 is a high voltage flyback controller. No optoisolator is needed for regulation. The part samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation. The LT8316 is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing.

• Output voltage ripple of 250mVP-P at VIN = 100V, IOUT = 3A
• Typical switching frequency of 43KHz (VIN = 100V, IOUT = 3A), 85KHz (VIN = 600V, IOUT = 3A)
• Efficiency of 89% (VIN = 100V, IOUT = 3A), 88% (VIN = 600V, IOUT = 3A)

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