Edward Ong, director of product marketing at Power Integrations, states: "As electric vehicle electronics become more sophisticated, automotive customers require higher power outputs to drive them. This new IC's 850 mA rating represents a 230% increase in available power output compared to other members of the LinkSwitch-TN2Q family." The LinkSwitch-TN2Q ICs reduce the number of components by including the control, driver, protection circuitry, and a 750V power MOSFET in a single SMD package.
The LinkSwitch-TN2Q ICs are AEC-Q100 certified and support buck, buck-boost, and non-isolated flyback converter topologies. Each device incorporates a 750V power MOSFET, an oscillator, on/off control, a high-voltage switched-mode current source for self-powering, frequency jitter detection, fast current (cycle-to-cycle) sensing and current limiting, hysteretic thermal shutdown, and output overvoltage protection circuitry in a monolithic IC.
The LinkSwitch-TN2Q ICs draw very little standby current, resulting in power supply designs that easily meet less than 50mW no-load requirements at a 400VDC input. Comprehensive protection features ensure the power supplies are safe. and reliable, including protection against input and output overvoltage, device overtemperature, loss of regulation, and power supply overload or short-circuit failures.
Availability and Resources
: A reference design kit, RDK-707Q, is available for designers who wish to evaluate the LinkSwitch-TN2Q IC family. Device pricing starts at $1.33 for the LNK3209GQ-TL in quantities of 10,000 units.
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- Category: Integrated Circuits
AEC-qualified Buck switching IC with an 850 mA output for automotive power supplies
Power Integrations has introduced a high-power member of its LinkSwitch™-TN2Q automotive switching IC family that delivers up to 850 mA of output current without the need for metal heatsinks. The highly integrated ICs support a wide input voltage range of 30 to 550 VDC, enabling the devices to power up and operate below the extra-low safety threshold (SELV) required in vehicle functional safety applications.
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