E-UC2843BD1

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E-UC2843BD1 is an adjustable, single phase synchronous buck (step-down) DC/DC constant frequency controller which is specifically designed for high performance, efficient, reliable cost effective and application economic solutions. It is a current-mode controller device optimized to drive the modern synchronous rectifier MOSFETs and hence provide excellent line and load regulation with fast transient response.

Application field

E-UC2843BD1 can be used in a variety of applications such as , Power Supplies, Automotive, Industrial, Computing and Telecom, Networks, Game consoles etc. It offers excellent EMI performance, high efficiency and low standby current. This device is also suited for high current and power solutions. With the Intellimatch technology, it helps the designers to achieve higher efficiency at all load conditions. This technology helps to reduce the switching energy losses significantly and therefore reducing the overall cost of the system.

Working Principle

E-UC2843BD1 works on the principle of pulse-width modulation (PWM) for providing regulated output voltage and current. This device is designed to sense the current at the output by routing a proportional portion of the output current back to the input. This feature enables the user to control both switching frequency and output voltage. Additionally, the E-UC2843BD1 also detects current maxing, soft-start and various other protection features and adjustable parameters.

The operation of this device is brought about by the combination of conduction MOSFETs and RDSon sensing using the onboard sensing resistor and power ground. The device has an integrated high-efficiency MOSFET driver along with under voltage protection (UVLO). This feature prevents the power converter from operating if the input voltage is below the Under voltage lockout threshold voltage to prevent damage to the device.

One unique feature of the E-UC2843BD1 is the leading-edge blanking during startup. This feature reduces the shoot-through current, thus preventing the drain of power from the input source and hence resulting in high efficiency and low power consumption. This device also provides flexibility for current limiting by setting the overload current limit and overload sensing delay time.

E-UC2843BD1 can be used in a variety of applications such as automotive and industrial power supplies, computing and telecommunications, networks, game consoles and more. Its features such as high speed current loop, soft start and advanced line and load regulation make it a great choice for applications that require efficient, reliable and cost-effective solutions.

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