SiP12107 Reference Design Circuit | Synchronous Buck Regulator Application Circuit

The SiP12107microBUCK Synchronous Buck Regulator is a high frequency current mode constant on-time synchronous buck regulator that integrates high side and low side power MOSFETs. This article mainly introduces the SiP12107 features, application range, reference design circuit and circuit analysis to help you shorten the design time.

SiP12107 features: 2.8V to 5.5V input voltage; halogen-free; 3A sustainable output current; ultra-fast transient response

Typical applications for SiP12107: notebook computers; desktops and servers; handheld devices; POL for telecommunications; consumer electronics; industrial and automation

SiP12107 reference design application circuit:

Figure 1 Internal structure of SiP12107

The SiP12107 is a high frequency current-mode constant on-time (CM-COT) synchronous buck regulator with integrated high-side and low-side power MOSFETs. Its power stage is capable of a3 A continuous current at 4 MHz switching frequency. This regulator produces an adjustable output voltage down to 0.6 V from 2.8 V to 5.5 V input rail to accommodate a variety of applications, including computing, consumer electronics, telecom, and industrial.

Figure 2 SiP12107 reference design

SiP12107's CM-COT architecture delivers ultra-fast transient response with minimum output capacitance and tight ripple regulation at very light load. No ESR or external ESR network is required for loop stability purpose. The device also incorporates a power saving scheme that significant increases light load Efficiency.

SiP12107 Chinese data sheet: Click to download

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