S-8358B27MC-NQMT2G

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S-8358B27MC-NQMT2G is a 3A, high frequency, wide VIN buck DC/DC switching controller with two synchronous channels. It is also one of Renesas\'s Power Management Integrated Circuit (PMIC) solutions, specifically classified under its Voltage Regulators\' DC DC Switching Controllers series. This innovative design enables a much higher efficiency of up to 96%, reducing standby current to nearly zero and improving the accuracy of voltage control. It is an ideal solution for designs which require a low power consumption and high accuracy, such as in applications such as wearables, communication base stations, and industrial systems.

The S-8358B27MC-NQMT2G DC/DC switching controller is based on Renesas\'s advanced B27MC technology and offers an input voltage range of 4.5V to 36V. It contains an integrated 0.2 Ohm power MOSFET, and an error amplifier, as well as a dedicated switching frequency control pin to program the operating frequency. When running in dual synchronous mode, the peak efficiency can be improved by 5%. It also supports a pre-biased output voltage, allowing for wear out prevention for the two channels.

In addition, the S-8358B27MC-NQMT2G has a high-speed output voltage tracking feature, aiding in ensuring the stability of an output, as well as help improve response time. The controller also features a temperature monitoring system, which monitors the part temperature during operation and shuts down the output if the temperature exceeds its specified limit. This allows for the prevention of thermal problems.

When it comes to the working principle of the S-8358B27MC-NQMT2G, the controller\'s PWM device modulates the power MOSFET of the device and controls the switched mode converter\'s output. When in operation, a current sense amplifier compares the output voltage to a reference voltage and generates an error signal. The error signal is integrated by the ramp circuit and this integrated value is compared to the sawtooth wave. As a result, when the integrated value of the error signal and the sawtooth wave overlap, the power MOSFET is switched off, and the supply to the output is cut off.

With the proliferation of wearables and mobile devices, the S-8358B27MC-NQMT2G is the perfect solution for designs requiring voltage accuracy, high efficiency and low power consumption. It can be employed in various applications, such as wearable devices and industrial systems, as well as any other product requiring high power conversion efficiency. The controller offers a wide input voltage range, high accuracy and ultra-low standby current values, allowing users to reduce system power consumption, thereby reducing CO₂ emissions.

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