NKE1209SC Power Supplies - Board Mount

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DC-DC converters are widely used in power systems as a key component for efficiently converting power from one voltage level to another. The NKE1209SC is a type of Switching DC-DC converter, specifically a Synchronous Buck converter, which is a popular type of DC-DC converter used for creating negative voltage supplies, or stepping down input voltage levels into a lower output voltage for applications such as mobile devices, computers, or any application where power needs to be efficiently stepped down from one voltage level to another.

The NKE1209SC is able to achieve high efficiency levels, up to 95%. It features low standby power, low noise and EMI, making it well-suited for a variety of commercial and industrial applications. It also features a wide input voltage range from 4.5V to 28V and an adjustable output voltage range from 0.6V to 26V. The device further offers a range of protections, such as Over-Temperature Protection (OTP), Over Voltage` Protection (OVP), and Under Voltage Lockout (UVLO), making it suitable for many different applications.

The NKE1209SC is a a Switching Synchronous Buck DC-DC converter that works on a Buck topology. This type of converter efficiently steps down a higher input voltage into a lower output voltage through the use of a high-frequency switching circuit along with a transformer or an Inductor-Capacitor (LC) filter network.

The basic operation of a Buck Converter circuit consists of three main steps: (i) Switched Mode Operation, (ii) Pulse Width Modulation (PWM), and (iii) Power Conversion. In Switched Mode Operation, the power MOSFETs inside the controller are repeatedly turned ON and OFF at a fixed frequency. A fixed frequency PWM signal is applied to the MOSFETs, which controls the conduction times and so the ratio of the output voltage to input voltage. The last step is Power Conversion, which takes place during the Off-Time of the switching operation, where the energy stored in the filter components is released to the load.

In the case of the NKE1209SC Synchronous Buck DC converter, the power is converted using a synchronous rectifier. The synchronous rectifier is a semiconductor circuit that consists of two transistors connected in parallel. One of the transistors is used to turn ON the synchronous rectifier and the other is used to turn it OFF. The timing of the switching of the transistors is controlled by the Pulse Width Modulated PWM signal, which ensures that the power conversion takes place at the right times and also ensures high output voltage accuracy. The synchronous rectifier is able to provide higher operating efficiency compared to the diode version due to its lower voltage drop.

The NKE1209SC Synchronous Buck DC Converter has many applications in commercial electronics, computer peripherals, telecommunications, and in industrial applications. It is useful for applications which require a wide input voltage range and adjustable output voltage ranges. It is also highly efficient, has low noise and EMI, and includes several protections. This makes it suitable for many different applications and is a great choice for any application which requires the efficient conversion of power from one voltage level to another.

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