S-8352D20MC-K8FT2G

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S-8352D20MC-K8FT2G is a DC-DC switching controller developed by Renesas that integrates a low-side and high-side DMOS power switch into a single package, and targets on motor control and home appliances applications. The device features two operating modes, Step-Up voltage mode and Step-Down voltage mode, to provide a wide range of output voltage support.

In Step-Up voltage mode, the S-8352D20MC-K8FT2G operates in the same way as a buck converter, providing power conversion efficiency of up to 95%. It utilises an output error signal and a supply voltage signal to automatically adjust the duty cycle of the switch, controlling the amount of energy being transferred to the load. This helps to improve efficiency, reduce ripple, and optimise the power output.

In Step-Down voltage mode, the S-8352D20MC-K8FT2G operates as a boost converter, providing up to 95% power conversion efficiency. In this mode, the supply voltage is used as an input signal to the control circuit and is used to accurately adjust the output voltage. By adjusting the duty cycle of the switch, the amount of current transferred from the input to the output can be tuned to ensure accurate output voltage and optimal efficiency.

The S-8352D20MC-K8FT2G is designed for applications such as motor control and home appliance systems. The device is capable of supporting output voltages ranging from 3.3V to 5.25V, and provides a wide range of switching frequencies so that designers can optimise their power output for the specific application. Additionally, the integrated low-side and high-side DMOS power switches provide stable operation and help to reduce current leakage and EMI.

In addition to the Step-Up and Step-Down voltage modes, the S-8352D20MC-K8FT2G features both synchronized and non-synchronized pulse width modulation (PWM) modes. The synchronized PWM mode ensures that the output voltage is precisely regulated at all times, whereas the non-synchronized PWM mode is useful for applications where it is necessary to adjust the output voltage. Both modes are easy to configure using the on-chip inductor-capacitor compensation circuitry, which helps to optimize the operating performance.

The S-8352D20MC-K8FT2G also features overload protection and thermal protection, providing a reliable and safe operation even in extreme conditions. In addition, the device incorporates anti-ringing circuitry to reduce switching noise, and it includes an output voltage disconnect function to help protect the load from sudden overvoltage spikes.

The combination of integrated power switches, efficiency, and reliability make the S-8352D20MC-K8FT2G a great choice for motor control and home appliance systems. With its wide range of output voltages, high power conversion efficiency, and integrated features, it is an ideal device to help increase the performance of any application.

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