High voltage switcher for automotive power designs

High voltage switcher for automotive power designs

New Products |
By Nick Flaherty

Power Integrations has launched a version of its LinkSwitch-TN2 switcher chip for buck or non-isolated flyback applications with AEC-Q100 qualification for automotive power supply designs.

The LNK3206GQ has an integrated 750 V MOSFET to provide reliable power for electric vehicle (EV) sub-systems connected to the high-voltage bus, including HVAC, climate control, battery management, battery heater, DC-DC converter and on-board charger systems. The surface-mount device requires no heatsink, needs few external components and occupies a very small PCB footprint in automotive power designs.

The 7W flyback / 360 mA buck LNK3206GQ LinkSwitch-TN2 has a wide input voltage range of 60 VDC to 550 VDC to support the 400 VDC bus commonly seen in mid-range EV automotive power applications. The switcher provides accurate regulation of better than +/-5 percent across line voltage, load, temperature and component tolerances. 

“Our automotive switcher ICs reduce size while increasing the reliability and robustness of automotive sub-systems. By supplying auxiliary systems directly from the high-voltage bus with a LinkSwitch-TN2 power supply, automotive engineers can reduce the requirement for the conventional 12 V distributed rail, saving assembly and material cost,” said Edward Ong, product marketing manager at Power Integrations.

Samples of the LNK3206GQ automotive-qualified LinkSwitch-TN2 switcher are available now with prices starting at $0.84 in 10,000-piece quantities.

The datasheet and reference design documentation is available from the Power Integrations website at:

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