RDK-506

Reference design kit for a 1.44W non-isolated buck converter using LinkSwitch™ -TN2 LNK3204D/P/G. Typical application includes small appliance. The board provides a non-isolated 12V, 120mA continuous output. In metering applications this is used to supply the control circuits and micro controller. LinkSwitch-TN2 integrates a 725V MOSFET and control circuitry into a single low cost IC. Regulation is achieved using a low cost resistor divider feedback network. The switching frequency jitter feature of the LinkSwitch-TN2 family and the 66KHz switching frequency of operation helps reduce EMI.

• Input: 85VAC to 265VAC, output: 12V, 120mA
• Highly integrated solution
• Lowest possible component count
• No optocoupler or zener diode required for regulation
• Thermal overload protection with automatic recovery
• <lt/>30mW no-load consumption, <gt/>75% efficiency at full load
• <lt/>±3% load regulation

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

All testing should be performed using an isolation transformer to provide the AC input to the prototype board.