DC-DC converter integrates coil for AEC-Q100 designs

DC-DC converter integrates coil for AEC-Q100 designs

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By Nick Flaherty

Torex Semiconductor has launched another 36V DC-DC converter with integrated coil and conotrol IC for high reliability applications.

A DC-DC converter power supply circuit can be constructed simply by adding a ceramic capacitor and a resistance for voltage setting to the external components, which can contribute to substantially reducing space requirements for board areas and shortening development periods.

The internal incorporation of the coil simplifies board layout, making it possible to minimize radiation noise and problems with circuit operation. An input voltage of 3.0V to 36V (absolute maximum ratings 40V) with a switching frequency of 2.2MHz, 0.75V standard voltage supply are built-in, and the output voltage can be set from 1.8V to 5.0V with an external resistance. The control system can be selected from PWM control (XDL605) or PWM/PFM automatic switching control (XDL606).

The soft-start time has been internally set to 2.0ms but can be optionally set to any desired value by connecting a resistance and capacity to the EN/SS pin, and the power good function makes it possible to monitor the status of the output voltage. Sequence control can be performed with a combination of the soft-start time and power good function.

The coil and control IC for the DC-DC converter are encapsulated in a DFN3625-11B ultra-small leadless package measuring 2.5×3.6×1.55mm compliant with AEC-Q100.

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