Synchronous buck converter is automotive-qualified 

The AP64060Q is a 600mA synchronous buck converter device with an input voltage range that covers 4.5V to 40V. Available from Diodes, it incorporates a 600 mOhm high side power MOSFET and a 300 mOhm, low side power MOSFET. This combination ensures that high efficiency step down conversion (up to 90 per cent) can be delivered using minimal PCB board space. 

The AP64060Q is intended for use in automotive powertrains, infotainment systems, and instrumentation clusters, as well as vehicles’ exterior lighting.

It has a very low quiescent current (IQ), typically only 90 microA, which translates into enhanced light load efficiency. The fast switching frequencies (2MHz) means that smaller accompanying inductors and capacitors can be used. The synchronous rectification eliminates the need for an external Schottky diode, confirmed Diodes, while use of a peak current mode control and built-in loop compensation network reduces the overall component count.

The proprietary gate driver scheme alleviates switching node ringing without impacting MOSFET turn-on and turn-off times, said the company. This mitigates high frequency radiated electromagnetic interference (EMI) noise caused by MOSFET switching.

The AP64060Q has an operating ambient temperature range of -40  to +125 degrees C. There is also over-voltage protection, under-voltage lockout (UVLO) and thermal shutdown. The cAEC-Q100 Grade 1-qualified converter is supplied in a compact TSOT26 package. 

Diodes delivers semiconductor products to customers in the consumer electronics, computing, communications, industrial, and automotive markets. Its product portfolio includes discrete, analogue, and mixed-signal products and packaging technology. 

The company’s 32 sites worldwide include engineering, testing, manufacturing, and customer services.

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