F test to compare two variances data: sheet5[, 1] and sheet5[, 2] F = 0.23533, num df = 9, denom df = 9, p-value = 0.04229 alternative hypothesis: true ratio of variances is not equal to 1 95 percent confidence interval: 0.05845276 0.94743902 sample estimates: ratio of variances 0.2353305 分析一下上述结果

时间: 2024-03-04 16:50:33 浏览: 113

innoswitch-ce_family_datasheet.pdf

### InnoSwitch-CE Family Datasheet Key Points #### Product Overview The InnoSwitch-CE family of ICs is designed to simplify the development and manufacturing processes of low-voltage, high-current power supplies, especially for compact enclosures or applications with high efficiency requirements. The architecture is revolutionary in its integration of both primary and secondary controllers, along with sensing elements and a safety-rated feedback mechanism within a single IC. #### Key Features **Highly Integrated, Compact Footprint** - **Integration:** The IC incorporates a flyback controller, a 650V MOSFET, secondary-side sensing, and a synchronous rectification driver, making it highly compact and efficient. - **FluxLink™:** This integrated, HIPOT-isolated feedback link allows for exceptional CV accuracy despite variances in transformer and board components. - **Adjustable Output Current:** Using an external output sense resistor, users can adjust the accurate output current, which is particularly useful for applications requiring specific current levels. **EcoSmart™ – Energy Efficient** - **No-Load Efficiency:** At 230V AC, the device consumes less than 10mW when supplied by a transformer bias winding, contributing to energy efficiency. - **Global Compliance:** The IC easily meets all global energy efficiency regulations, making it suitable for international markets. **Advanced Protection/Safety Features** - **Primary-Sensed Output OVP:** This feature ensures that the output voltage remains stable even under varying conditions. - **Secondary-Sensed Output Overshoot Clamp:** It prevents any overshoots in the output voltage, providing additional safety measures. - **Secondary-Sensed Output OCP to Zero Output Voltage:** In case of overcurrent, the output voltage is automatically reduced to zero, preventing damage to connected devices. - **Hysteretic Thermal Shutdown:** This feature provides protection against overheating by shutting down the IC if it reaches a certain temperature threshold. - **Input Voltage Monitor:** Accurate brown-in/brown-out and overvoltage protection ensure safe operation under fluctuating input voltages. **Full Safety and Regulatory Compliance** - **HIPOT Compliance Testing:** Every unit undergoes 100% production HIPOT compliance testing equivalent to 6kV DC/1 sec. - **Reinforced Insulation and Isolation Voltage:** The isolation voltage exceeds 3,500V AC, ensuring safety and reliability. - **Safety Approvals:** UL1577 and TUV (EN60950) safety approvals confirm adherence to international safety standards. - **EMC Compliance:** The IC is compliant with EN61000-4-8 (100A/m) and EN61000-4-9 (1000A/m), ensuring compatibility with electromagnetic interference standards. **Green Package** - **Halogen-Free and RoHS Compliant:** The packaging materials are environmentally friendly, adhering to RoHS regulations, which restrict the use of hazardous substances. #### Applications - **High Current Chargers and Adapters:** Ideal for mobile devices such as smartphones and tablets. - **Consumer Electronics:** Suitable for set-top boxes, networking equipment, gaming consoles, and LED lighting systems. #### Detailed Description **InnoSwitch-CE Architecture** The InnoSwitch-CE family utilizes a unique architecture that integrates both primary and secondary controllers into a single IC. This close proximity of components and innovative use of the integrated communication link enable precise control of the secondary-side synchronous rectification MOSFET and optimization of the primary-side MOSFET switching. This results in improved system reliability and maximized efficiency across the entire power range. **Component Integration** The IC includes a flyback controller, a 650V MOSFET, and secondary-side sensing, which simplifies the design process and reduces component count. The FluxLink™ integrated feedback link ensures exceptional CV accuracy, tolerant of transformer and board component variances, leading to more consistent performance. **Adjustable Output Current** The ability to adjust the accurate output current using an external output sense resistor is a significant advantage for applications where specific current levels are required. This feature allows for greater flexibility and customization of the power supply to meet different application needs. **Energy Efficiency** The EcoSmart™ technology ensures that the IC consumes less than 10mW at no load when supplied by a transformer bias winding, making it highly energy-efficient. This feature is crucial for meeting global energy efficiency regulations, making the IC suitable for a wide range of applications worldwide. **Safety and Protection Features** The advanced protection and safety features, including primary-sensed output OVP, secondary-sensed output overshoot clamp, and secondary-sensed output OCP to zero output voltage, provide comprehensive protection against potential hazards. The hysteretic thermal shutdown and input voltage monitor ensure safe operation under various conditions, enhancing overall system reliability. **Regulatory Compliance** The full safety and regulatory compliance of the InnoSwitch-CE family ensures adherence to stringent international safety standards, including UL1577 and TUV (EN60950) safety approvals. The IC also complies with electromagnetic interference standards, making it suitable for use in sensitive electronic environments. **Environmental Considerations** The green package of the InnoSwitch-CE family is halogen-free and RoHS compliant, demonstrating a commitment to environmental sustainability. This is particularly important in today's market, where there is growing demand for eco-friendly products. #### Conclusion The InnoSwitch-CE family of ICs offers a highly integrated solution for the development of low-voltage, high-current power supplies. Its advanced features, including energy efficiency, comprehensive safety protections, and regulatory compliance, make it an ideal choice for applications requiring compact size and high efficiency. The IC's versatile applications in consumer electronics, mobile devices, and other sectors demonstrate its broad appeal and utility in modern electronic systems.

这是一个方差比较的 F 检验报告，比较的是两个样本数据的方差是否相等。该报告显示 F 值为0.23533，自由度分别为9和9，p值为0.04229。备择假设为真实的方差比率不等于1。95%的置信区间为0.05845276至0.94743902，样本估计的方差比率为0.2353305。根据结果，可以得出结论：拒绝原假设，即两个样本的方差不相等。因为p值小于0.05，所以可以认为这个结果是显著的。置信区间不包含1，也支持了拒绝原假设的结论。样本估计的方差比率为0.2353305，说明其中一个样本的方差比另一个样本小很多。

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