AEC-qualified buck switcher IC is latest LinkSwitch IC from Power Integrations

Providing up to 850mA without the need for metal heatsinking, the LinkSwitch-TN2Q automotive switcher IC has been announced by Power Integrations. 

The IC supports 30 to 550V DC input, enabling the devices to start up and operate below the required safety extra low voltage (SELV) threshold in functional safety EV applications.

It is designed for the electronic systems in EVs which require high supply currents to drive them. The 850mA rating represents an increase of 230 per cent in available output current compared with other members of the LinkSwitch-TN2Q family, said Edward Ong, senior product marketing manager at Power Integrations. “LinkSwitch-TN2Q ICs reduce part count by including control, driver, protection circuitry and a 750V power MOSFET in an SMD [surface mount device] package,” he added.

LinkSwitch-TN2Q ICs are AEC-Q100 qualified and support buck, buck boost and non-isolated flyback converter topologies. Each device incorporates a 750V power MOSFET, oscillator, on/off control, a high-voltage switched current source for self-biasing, frequency jittering, fast (cycle-by-cycle) current sensing and current limit, hysteretic thermal shutdown, and output over-voltage protection circuitry in a monolithic IC.

The ICs consume very little current in standby, resulting in power supply designs that easily meet less than 50mW no-load at 400V DC input. Protection features enable safe and reliable power supplies, including protection against input and output over-voltage, device over-temperature, lost regulation, and power supply output overload or short-circuit faults.

The RDK-707Q reference design kit to evaluate the LinkSwitch-TN2Q IC family is also available from Power Integrations.

The ICs are available directly from Power Integrations’ sales representative or authorised worldwide distributors: Digi-Key, Farnell, Mouser and RS Components.

Power Integrations specialises in semiconductor technologies for high voltage power conversion. The company’s products are building blocks in the clean power ecosystem, enabling the generation of renewable energy as well as the efficient transmission and consumption of power in applications ranging from mW to MW.

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