L6590D

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The L6590D is an advanced high-voltage constant current (CC) controlled power semiconductor switch that cover a wide range of AC and DC converters, offline switchers, and SMPS applications.

The L6590D is built on a two-stage configuration. In the first stage, the output voltage is externally monitored by the operational amplifier. When the monitored output voltage exceeds a given threshold, the device will immediately switch off the high-voltage switch and enter a ready state. At this point, the leading edge gate drive of the L6590D is ready to activate the high-voltage switch.

The second stage begins when the enable input is asserted. This causes the device to initiate the high-voltage switch to bridge the closed loop of the control system. The device then moves into the active mode. During this active mode, the oscillator within the device provides a digital signal to the output filter to form a closed loop feedback. This feedback loop helps the device to maintain a constant current at the output.

The L6590D provides outstanding efficiency and robustness, thanks to its advanced technology and integrated gate terminals. It is also equipped with a number of protection features, such as soft start and overvoltage protection, to ensure reliable operation. Additionally, it is designed to operate with maximum output ripple without negative feedback, and its advanced modulation features facilitate optimized performance.

The L6590D is the ideal solution for numerous AC/DC applications, such as home appliances, consumer electronics, power supplies, and industrial systems. Thanks to its advanced features and protection mechanisms, the device provides reliable operation at up to levels of 350V, with a maximum output current of up to 10A.

In conclusion, the L6590D is an ideal power semiconductor switch for AC/DC applications, including offline switchers and SMPS. Its wide voltage range, maximum output current, reliable operation, and integrated protection features make it highly suitable for numerous applications.

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