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LinkSwitch AC-DC converter ICs increase available current

Power Integrations has added a new member to its LinkSwitch-TN2 AC-DC converter family.

The LNK3207 ICs facilitate higher-power offline buck converter designs for appliances and industrial applications by increasing the available output current from 360 mA to 575 mA, while also reducing BOM count.

The ICs increase the available current by 60% while also delivering greater than 80% efficiency and no-load consumption of less than 30 mW. Each monolithic LinkSwitch-TN2 IC incorporates a 725 V power MOSFET, oscillator, on/off control for high efficiency at light load, a high-voltage switched current source for self-biasing, frequency jittering, fast (cycle-by-cycle) current limit, hysteretic thermal shutdown, and output and input overvoltage protection circuitry.

The LinkSwitch-TN2 ICs are intended for mass-market appliances such as washers, dryers and coffee makers, which benefit from their design simplicity. They are also suitable for sensor-based devices that require low power such as home security cameras and smart thermostats, as well as metering and IoT installations.

Devices are available in three packages, PDIP-8C, SMD-8C and SO-8C, for added design flexibility. The SMD-8C package is suitable for high-temperature ambient 85/105 °C applications.

Author
Neil Tyler

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