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MOSFET driver features adaptive dead time

06 Oct 2014

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Micrel Inc. launched an 85V full-bridge MOSFET driver featuring adaptive dead time and shoot-through protection.

The MIC4606's adaptive dead time circuitry actively monitors both sides of the full-bridge to minimise the time between high-side and low-side MOSFET transitions. On the other hand, the antishoot-through circuitry prevents erroneous inputs and noise from turning both MOSFETs of each side of the bridge on at the same time. Micrel positions these features to address technology advances in battery-powered tools.

The device offers a wide 5.5V to 16V operating supply range, which further helps to maximise system efficiency. The low 5.5V operating voltage allows for longer run time in battery-powered applications. In addition, the 85V operating voltage offers plenty of margins in order to protect against voltage spikes that are typical in motor drive and power supply circuitry.

The MIC4606 is available in a tiny 16-pin 4mm × 4mm QFN package with an operating junction temperature range of –40°C to 125°C.


MIC4606 features a separate high- and low-side under-voltage protection. Source: Micrel

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