S-8330A22FS-T2-G

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Modern electronic devices require input power in order to function properly and many have multiple power rails that are independently regulated from a single input voltage. To meet this demand, Multi-Phase DC-DC switching regulators, also known as power management integrated circuits (PMICs), are commonly used to efficiently deliver precise output voltages. The S-8330A22FS-T2-G is a high-performance Multi-Phase switching DC-DC regulator that offers improved efficiency and increased current delivery capabilities for reliable system power. This article will outline the application field of the S-8330A22FS-T2-G as well as its general working principle.

Applications

The S-8330A22FS-T2-G is suited for applications such as embedded systems, automotive systems, and communications equipment where input voltage, 5V, is available. This regulator is capable of multi-phase, synchronous buck operation with a maximum switching frequency of 1.25MHz. The single-input, five output feature of the S-8330A22FS-T2-G enables the delivery of up to 10A of output current and keeps efficiency above 92%. With the typical operating input voltage range of 3.2V ~ 13.2V, the S-8330A22FS-T2-G is suitable for the 3.3V, 1.8V, 1.2V and 0.9V applications.

Working Principle

The S-8330A22FS-T2-G features two differetial pairs as two main components. The main switches are capable of operating at high-voltage and high-switching frequency. The two main switch pairs consist of one n-channel and one p-channel MOSFET. The synchronous rectifier is composed of low-resistance n-type MOSFETs. The control circuit includes an integrated error amplifier, comparator, oscillator, P-channel driver and power on reset circuit. The error amplifier monitors the output voltage for stability and current limit accuracy.

When power is supplied, the outputs are preset to 5V and the oscillator circuit starts to oscillate. The output voltage is then compared to a reference voltage built in the controller IC. This difference creates an output voltage error signal, which the controller IC processes and outputs this signal to the P-channel driver. The P-channel driver then acts as the main switch and turns the two main switches on and off to adjust the DC-DC converter\'s switching frequency. The output voltage is fed back to the error amplifier, so the switching frequency is always regulated.

Furthermore, the maximum current limit and Voltage Position Monitor (VPM) features offer increased power supply reliability by providing an additional current limit protect shutdown, over-temperature protection, contact protection inrush current limiter, short circuit protection and much more. S-8330A22FS-T2-G also supports a Burst Mode operation which offers efficiency at light load and low ripple voltage.

Conclusion

The S-8330A22FS-T2-G is a high-performance, multi-phase DC-DC switching regulator that offers improved efficiency and increases current delivery capabilities for reliable system power. This regulator is suitable for a variety of applications such as embedded systems, automotive systems, and communications equipment that require input voltage between 3.2V to 13.2V. The S-8330A22FS-T2-G is capable of multi-phase, synchronous buck operation with a maximum switching frequency of 1.25MHz and is capable of delivering up to 10A of output current. Furthermore, the S-8330A22FS-T2-G also supports additional features such as maximum current limit protection, Voltage Position Monitor, over-temperature protection, contact protection, inrush current limiter, short circuit protection and more.

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