UDN2916B-T

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Power management integrated circuits (PMICs) are often employed in multiple design applications such as motor drivers, controllers and other related systems. This paper focuses on the application field and working principle of the UDN2916B-T, one of the popular PMICs available in the market.

The UDN2916B-T is a high-performance integrated circuit that incorporates low RDS(on) MOSFETs and drivers, providing great performance and optimized power efficiency. The chip is equipped with fast gate drivers and over-temperature protection that make it more suitable for various applications. Specifically, its adjustable drivers and integrated protection offer reliable and robust operations for any system using it. Further, the integrated circuit ensures seamless synchronization as well as increased system reliability by preventing excessive heat buildup.

The UDN2916B-T offers a wide range of applications when used as a motor driver and controller. It can drive up to one phase of a motor with an up to 3.7A current, providing reliable and robust operations. This makes the device suitable for applications such as home appliance motors, servomotors, fans and pumps. Furthermore, the device can be used to drive a unipolar or a bipolar motor, enabling designers to achieve many use-cases in their applications.

The UDN2916B-T features an onboard steady-state over-temperature protection (OSTP) as well as a fault latch. The integrated protection prevents any device damage due to overheating. The fault latch keeps track of the system\'s failure status, ensuring improved reliability and safety when compared to other PMICs in the market.

The working principle of the UDN2916B-T is simple and efficient. It uses a complementary port architecture to drive up to one phase of a motor. The architecture includes two parts; the high-side driver (HS1/HS2) and the low-side driver (LS1/LS2). The HS and LS together provide a full-wave synthesis, enabling users to control current across the motor winding.

Further, the chip incorporates 4-speed Gate-Source Frequency Selectable Alternating Current (GFSAC) mode to reduce switching losses. The GFSAC mode offers a wide range of frequencies while enhancing the power efficiency. In addition, it can provide the highest efficiency operating mode and automatically adjust the gate drive frequency depending on the load conditions. This ensures the device stays within its optimal range of operation, delivering superior performance and power efficiency.

In conclusion, the UDN2916B-T is a robust integrated circuit that can be used for various applications. Its adjustable drivers, integrated protection and onboard steady-state over-temperature protection (OSTP) provide reliable and robust operations. It can be used to drive a unipolar or a bipolar motor, providing enhanced system reliability. Further, its 4-speed GFSAC mode can improve the power efficiency while providing the highest performance. All these features make the UDN2916B-T an ideal choice for motor drivers and controllers.

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