This board implements a 4 W single-output wide range mains power supply set in flyback isolated topology, using the VIPER16LN, an off-line high voltage converter by STMicroelectronics.
The features include an 800 V avalanche rugged power section, PWM operation at 60 kHz with frequency jittering for lower EMI, current limiting with adjustable set point, on-board soft-start, a safe auto-restart after a fault condition and a low stand-by power.
The device does not require a biasing circuit to operate because the IC can be supplied by an internal current generator, therefore saving the cost of the transformers auxiliary winding. If the device is biased through an auxiliary winding, the demonstration board can reach very low standby consumption (< 30 mW at 230 VAC, with output load disconnected).
The IC implements several protections that considerably increase end-product safety and reliability: thermal shutdown with hysteresis, delayed overload protection, open loop failure protection (the last one available only if the device is biased through the auxiliary winding).
|DB1852: Wide range isolated flyback demonstration board, single output 12 V/4.2 W based on the VIPER16LN||1.0||546 KB|
|AN4259: STEVAL-ISA117V1 12 V / 4.2 W, 60 kHz flyback isolated with VIPer16LN||3.0||1 MB|
|STEVAL-ISA117V1 gerber files||1.0||504 KB|
|STEVAL-ISA117V1 BOM||3.0||45 KB|
|STEVAL-ISA117V1 schematics||1.0||18 KB|
|Evaluation products license agreement||1.4||128 KB|
|Part Number||Core Product||Marketing Status||Unit Price (US$) *||Quantity||ECCN (EU)||ECCN (US)||Country of Origin||More info||Order from ST||Order from Distributors|
|STEVAL-ISA117V1||VIPer16LN||Active : Product is in volume production||51.45||1||NEC||EAR99||ITALY||MORE INFO||Buy Direct Add to cart||DISTRIBUTOR AVAILABILITY|
|Part Number||Marketing Status||Package||Grade||RoHS Compliance Grade||Material Declaration**|
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.