UC2843BD1R2G Integrated Circuits (ICs)

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UC2843BD1R2G is a DC DC Switching Controller, commonly referred to as a Pulse Width Modulated (PWM) DC to DC Controller. It is a small, low-cost, high-efficiency controller IC used in a variety of designs from simple circuits to advanced motor control. The IC is packed with a number of features to make it easy for applications in the automotive, consumer, medical, and computing environments.

Application Field

The UC2843BD1R2G is used in a wide range of applications including motor control, embedded applications and variable speed systems. It can be used for DC to DC converter topologies such as boost, flyback and buck. It is suitable for products such as LED Drivers, Audio Amplifiers, Automotive Power Inverters, AC/DC Power Supplies, DC/AC Motor Drivers, Li-Ion Batteries, Chargers and UPSs.

Working Principle

The basic working principle of the UC2843BD1R2G is to generate a pulse width modulated (PWM) signal with a fixed frequency that is adjustable via external components. This PWM signal is then used to control the on-off of the DC to DC Switching Controller. The adjustable on-off time of the switch and the regulated output voltage of the controller depend on the magnitude of the feedback voltage applied to the appropriate pins. The controller can also handle a wide range of input voltages and can be configured for both synchronous or non-synchronous power conversion.

In order to control the switching of the device, pulses from the PWM are sent to the gate of the power MOSFET. The on-off of the MOSFET causes the implementation of the power conversion, specifically the switching of the power supply between the primary and the secondary side of the DC to DC converter. This, in turn, determines the output voltage and the amount of power that is transferred by the DC to DC converter.

Protection

The UC2843BD1R2G also features a wide range of protective features to ensure reliable operation. These features include adjustable peak current and output over-voltage protection. In addition, the controller also features temperature compensation, under-voltage lockout and output current limit. This means that it is well suited for a variety of applications and will ensure safe operation in different environments.

Conclusion

The UC2843BD1R2G is a low cost, high efficiency DC to DC Switching Controller that is suitable for a variety of power conversion applications. It is easy to configure and integrates several protection features to ensure reliable operation. The controller can handle a wide range of input voltages and is suitable for applications such as motor control, audio amplifiers, automotive power inverters, AC/DC power supplies and DC/AC motor drivers.

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