Analog Devices Inc. LT8316 Demo Board DC2793A
Analog Devices LT8316 Demo Board DC2793A is an evaluation board featuring a high VIN no-opto synchronous flyback converter example circuit based on the LT8316 600VIN Isolated Flyback Controller. The DC2793A outputs 5V and maintains tight regulation with a load current from 70mA to 7A. The evaluation board is optimized to operate over a wide 140V to 450V DC input voltage range. Output voltage accuracy stays within ±5% over the entire input voltage and load range. A secondary side LT8309 Synchronous Rectifier Driver is also on-board to sense the synchronous MOSFET drain-to-source voltage and determine its turn-on period. The standby mode of the LT8316 can be easily enabled and disabled by jumper settings, reducing the minimum switching frequency to 220Hz for ultra-low quiescent power consumption.
Specifications
- 140V to 450V input supply range (VIN)
- 4.75V to 5.25V, 5.0V typical output voltage range (VOUT)
- 7A maximum output current (IOUT)
- Output voltage AC ripple (peak-to-peak)
- at VIN = 140V, IOUT = 7A of 80mVP-P
- at VIN = 450V, IOUT = 7A of 20mVP-P
- Typical switching frequency (fSW)
- at VIN = 140V, IOUT = 7A of 45kHz
- at VIN = 450V, IOUT = 7A of 475kHz
- Efficiency (EFF)
- at VIN = 140V, IOUT = 7A of 89%
- at VIN = 450V, IOUT = 7A of 88%
Applicable Products
Analog Devices Inc. LT8316 Micropower Isolated Flyback Converters
Sample output voltage from isolated flyback waveforms that appear on third-winding transformers.
Test Setup
