The DC1817B demonstration board is an off line isolated flyback converter featuring LT3798EMSE device. The LT3798EMSE is a constant voltage/constant current isolated flyback controller that combines active power factor correction (PFC) with no optocoupler required for output voltage feedback into a single stage converter. A LT3798EMSE based design can achieve a power factor of greater than 0.97 by actively modulating the input current, allowing compliance with most harmonic current emission requirements. The demo board provides a single constant voltage output of 24V at 2A. It is optimized to operate over a wide AC input voltage range (90VAC to 265VAC, 47Hz to 63Hz). Output voltage accuracy stays within ±5% over the whole input voltage and load range. It provides a high power factor (>0.95) enabling the design to be used worldwide. It is also designed to comply with the IEC 61000-3-2 class D harmonics standard and the EN55015B conducted EMI standard.
● 87% efficiency
● Isolated PFC flyback with minimum number of external components
● VIN and VOUT limited only by external components
● Active power factor correction
● Low harmonic distortion
● No optocoupler required
● Constant current and constant voltage regulation
● Accurate regulated voltage and current (±5% typical)
● Energy star compliant (less than 0.5W no load operation)
●High voltages are present on demo circuit and can lead to lethal injuries to human body. only qualified personnel should operate it.
●Improper components replacement on the demo circuit can cause performance deteriorations, circuit malfunction, property damage and even life threatening injuries.
