<30mW No-Load Power Using Adaptive Voltage Positioning Control IC (iW676)

The iW1608 is an AC/DC controller optimized for universal input voltage applications. The device offers a unique output current limit configuration that monitors the input voltage via the resistor divider (CFG pin voltage V_CFG) in real time and adjusts the output current limit accordingly.

Travel adapters designed with the iW1608 can provide higher power at 230V_ACinput voltage and can reduce the current limit at low supply voltage (90V_AC) for lower power dissipation and safe operation during peak loss conditions. This enables the use of a smaller adapter case size while maintaining high current output at high line. The adjustable current limit also provides additional application possibilities, including peak charging using a temperature sensor to decrease the output current after the adapter reaches a maximum allowed temperature.

The iW1608 also offers configurable light-load operating modes where designers can optimize their circuit for either low no-load power consumption or fast DLR response. For applications that require both, the iW1608 can work with theiW676digital synchronous rectifier with integrated active voltage positioning (AVP) control, enabling <30mW no-load standby power and fast DLR response time.

The iW1608 integrates a full array of protection features including output over-current, short circuit, over-temperature and output over-voltage protection circuits.

Works withiW673digital synchronous rectifier for low cost, high efficiency applications.

Works withiW676-30digital synchronous rectifier with active voltage positioning control for high efficiency and <30mW no-load power consumption.