SI9122ADQ-T1-E3

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The SI9122ADQ-T1-E3 Integrated Dual-N Power Factor and Secondary-Side Control IC is an integral part of the power and energy management of modern applications. By providing an efficient switching control scheme and providing superior power factor performance, the SI9122ADQ-T1-E3 will improve the power architecture of the system. It is designed for applications that need to switch up to three independent loads. The six binable Power Switch Blocks (PSBs) offer flexibility to design flyback converters and to operate in either high frequency topologies or quasi-resonant mode.

Application Field

The SI9122ADQ-T1-E3 IC is designed to be used in power supplies with high power conversion rates and efficiency. It is also suitable for applications with high current demand, such as motor drives and LED lighting. It is an ideal solution for managing medium power multiple output applications, such as Medical, Industrial, Computer and Consumer products.

Working Principle

The SI9122ADQ-T1-E3 IC is a digital control IC that uses pulse width modulation (PWM) to drive a power switch when there is an error in the output voltage. This IC is integrated with a dual-N primary-side control IC that provides superior power factor performance. In addition, it has provisions for phase locked loop (PLL) for frequency synchronization and for fixed frequency operation. The PLL is used to synchronize the reference signal from the primary-side to the secondary-side. It is also used to maintain a consistent switching frequency, even if the input voltage changes. The PLL operates in conjunction with a secondary-side control system to ensure constant voltage regulation.The SI9122ADQ-T1-E3 IC has multiple Protection Features to ensure safe operation in case of faults or over current conditions. It also has comprehensive fault diagnostics to help diagnose faults or circuit abnormalities.The integrated dual-N control IC allows the SI9122ADQ-T1-E3 IC to provide superior power factor performance. It is also capable of regulating the output voltage over a wide range, allowing the voltage to be adjusted to account for different power conditions.

Conclusion

The SI9122ADQ-T1-E3 IC is a powerful device that can be used in a wide range of applications. It combines a dual-N control IC and PLL for excellent power factor performance, as well as advanced protection and fault diagnostic features. This IC is well-suited for multiple output applications that require efficient, high power conversion rates and efficiency.

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