Power Integrations, a well-known company specializing in energy-efficient power conversion of high-voltage integrated circuits, announced the addition of high-current devices to its LinkSwitch™-TN2Q automotive switch IC product family. The new devices can provide up to 850mA of output current without the need for a metal heat sink. This highly integrated IC supports wide input voltages from 30 to 550VDC, enabling electronics in electric vehicle applications to start up and operate normally below the required safety extra-low voltage (SELV) threshold.
Edward Ong, senior product marketing manager at Power Integrations, said: “As the electronics in electric vehicles become more complex, automakers require higher supply currents to drive them. Compared to other devices in the LinkSwitch-TN2Q product family, The 850mA rating of this new IC represents a 230% increase in usable output current. The LinkSwitch-TN2Q IC is housed in an SMD package and integrates control, driver, protection circuitry and a 750V power MOSFET to significantly reduce component count.”
The LinkSwitch-TN2Q IC is AEC-Q100 qualified and supports buck, buck-boost and non-isolated flyback converter topologies. Each device integrates a 750V power MOSFET, oscillator, switch control, a high-voltage switched current source to self-power the IC, frequency modulation, fast (cycle-by-cycle) current sensing and current limiting, and hysteresis on a monolithic IC Thermal shutdown and output overvoltage protection circuitry.
The LinkSwitch-TN2Q IC consumes very little current in standby mode, so the power supply design can easily meet the 400VDC input
