Torex adds AEC-Q100 synchronous step-down DC/DC converters

The increased use of electronic components in automotive design and a shift from LDO to DC/DC reduces power consumption. There is also a need to reduce the space used in such designs. The company has developed the XD9267 and XD9268 series 600mA synchronous step-down DC/DC converters with an internal 36V operation driver transistor. The synchronous step-down DC/DC converters are power supply ICs meet the needs of this market, says Torex Semiconductor.

The XD9267 and XD9268 series are AEC-Q100 compliant, synchronous step-down DC/DC converters have an input voltage range of 3.0 to 36.0V (absolute maximum rating 40V) and an output voltage range of 1.0 to 25.0V. Oscillation frequency is 2.2MHz.

For the operation mode, PWM control (XD9267) or PWM/PFM automatic switching control (XD9268) can achieve high efficiency and a low ripple voltage over a wide load range from light to heavy loads, explains Torex Semiconductor. Switching from a regulator to the light load (1mA) efficiency of 82 per cent and the world’s smallest 36V synchronous step-down DC/DC converter means improving efficiency by half and significantly reducing the mounted surface area by 50 per cent.

The soft-start time is internally set to 2.0ms (typical), but can be adjusted to set a longer time using resistor and capacitor. Over-current limiting, under-voltage lockout and thermal shutdown are available as internal protective functions. The output state can be monitored using the ‘power good’ function.

The SOT-89-5 package or the small USP-6C package (1.8 x 2.0 x 0.6mm) is optional to match the application.

Torex Semiconductor provides CMOS power management ICs for battery-powered and energy efficient applications. Torex specialises in CMOS analogue technology, with LDO voltage regulators, voltage detectors and DC/DC converters.

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