LDC15F-2-C

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AC DC converters are electronic devices that convert alternating electric current (AC) into direct current (DC). AC power is generated from utility sources, while DC power is typically supplied from batteries or photovoltaic panels. The LDC15F-2-C is a particular type of AC DC converter manufactured by STMicroelectronics. The device utilizes a zero current switching (ZCS) topology to ensure the highest level of power converters. Here, we will take a look at the application field and working principle of the LDC15F-2-C.

Application field

The LDC15F-2-C AC DC converter is primarily designed for use in consumer and industrial motor application requiring both high efficiency and low EMI. The integrated Drive Model (DM) is designed to control various types of motors such as DC, Brushless DC (BLDC) and Step Motors. The precision of the control and the EMI immunity meets stringent requirements in various applications. These applications include air-conditioners, home appliances, motor-oil pumps, toys and robotic systems.

Working Principle

The LDC15F-2-C features a zero current switching (ZCS) topology which provides efficient power conversion with highest efficiency and lowest electromagnetic interference. This feature is especially beneficial when used in applications where noise and EMI are a concern. In a ZCS topology, switching is done when the current is zero, meaning that the load current is not disrupted during a switching cycle. This results in less load disturbances compared to traditional interleaved power conversion techniques.

In addition, the LDC15F-2-C is an integrated Drives Model (DM) that provides precise motor control in a variety of motor types, including DC, Brushless DC (BLDC), and Step Motors. The integrated DM features a comprehensive set of modulation techniques and control algorithms and it is also capable of running auto-tune algorithms to automatically adjust the gains of the proportional integral derivative (PID) controller. Moreover, the LDC15F-2-C allows for adjustable compensation parameters for current sensing, voltage sensing, and speed sensing in order to fine-tune its performance.

The LDC15F-2-C utilizes a three-phase bridge that reduces power dissipation, thereby providing a high efficiency and excellent thermals performance. It also features the latest generation of high-speed digital control cores to achieve fast response and precise control of the motor parameters.

Furthermore, the LDC15F-2-C combines complete control, configurability and performance in a single package, making it an ideal choice for a wide variety of applications, such as air conditioners, home appliances, motor-oil pumps, toys and robotic systems.

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