S-8352A46MC-K3FT2U

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The S-8352A46MC-K3FT2U is a high performance, fully featured dual synchronous buck voltage regulator with integrated high and lowside drivers, popularly regarded as an ideal power supply solution for the most challenging applications. It is a DC-DC Switching Controller, part of a Power Management IC (PMIC) category of voltage regulators.

At its core, the S-8352A46MC-K3FT2U implements a current-mode hysteretic control architecture, which helps support dynamic load conditions. In order to support the versatile application fields, the device offers advanced features such as programmable gate drive, programmable soft-start, spread spectrum frequency control, skip modes, programmable current slopes, slew-rate control, and a clock synchronization facility. The device features two independent integrated high and lowside switches which support external P-channel and N-channel MOSFETs, operating at up to 6.5A with up to 10V drive. Furthermore, all these features and parameters are adjustable, allowing a highly flexible system implementation.

The working principle behind the S-8352A46MC-K3FT2U involves the series connection of two regulator channels, each one with its own control loop. The internal switches regulate the output voltage of the channels, which alternately pulse at twice the frequency of the current mode control. The output voltage is measured and compared with the feedback reference voltage, while the inner current is monitored by the integrated current sensing circuit. Once the inner current exceeds a certain threshold, the low side MOSFET is driven off and the pulse is terminated.

Typical applications for the S-8352A46MC-K3FT2U includes but is not limited to industrial and instrumentation applications, where there is a need for reliable and low cost power supply. Additionally, the high and lowside control makes it an ideal choice for telecom and wireless infrastructure applications, where space and efficiency are critical. Another major application for it is data centers and power distribution systems with their high safety and stability requirements.

To summarize, the S-8352A46MC-K3FT2U is a DC-DC Switching Controller, part of a Power Management IC (PMIC) category of voltage regulators. It implements a current-mode hysteretic control architecture, and supports a wide range of application fields due to its advanced features. Its working principle involves the simultaneous control of two regulator channels, relying in the internal switches to regulate the output voltage and the integrated current sensing circuit to monitor the inner current.

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