Microchip MIC28514/5 buck converter. Free Technical Library News

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Microchip MIC28514/5 buck converter

07.05.2021

Microchip has introduced a new MIC28514/5 buck converter certified for automotive applications according to the AEC-Q100 standard.

These devices feature a high input voltage of 75 V and a Constant On-Time (COT) PWM control method, which achieves high efficiency, and also significantly reduces the number of external components, which positively affects the weight, size and price of the final device. The MIC28514/5 has integrated high-precision MOSFETs that convert high voltage to lower voltage.

Main Features:

input voltage range 4,5...75 V;
adjustable output voltage 0,6...32 V (limited by duty cycle);
high current load 5 A;
adaptive time constant;
built-in reference voltage source 0,6 V;
switching frequency of built-in switches 270...800 kHz;
high voltage internal linear regulator (LDO) for single voltage operation;
soft start function;
the ability to set the operating mode DCM or CCM (only for MIC28515);
programmable current limit and short circuit protection;
thermal shutdown with hysteresis;
compact case VQFN 6x6 mm;
temperature range -40...125°C.

Applications in the automotive industry:

USB-C, built-in charger;
battery management system;
multimedia and data acquisition systems (ADAS);
voltage converters in electric bicycles and electric scooters.

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