WeChat group voice Q&A at 2pm: Vicor power experts answer netizens' power design questions
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Origin of the event:This Q&A session is an Easter egg after the end of Vicor's theme event " Power Supply Design for Pulse Loads". Vicor power experts are specially invited to select at least 10 questions from the questions raised by netizens participating in the event and answer them via WeChat voice. Interested netizens are welcome to join the group and listen. Voice Q&A time: Today (May 24) 2:00 p.m. Voice Q&A WeChat group: EEWORLD Power Technology WeChat group (How to join the group: add helloeeworld1 as a WeChat friend, and note vicor to join the group.) Voice Q&A guests:
Tao Si Nian (Cyrus Tao joined Vicor in January 2019 and is responsible for technical support and application research for customers in East China. Prior to this, he worked at Delta's Shanghai R&D Center, engaged in the design and development of DC/DC module power products. Question content answered by voice: | EEWorld Username | Question | | @北 | In the section "Correctly select the capacitance of large-capacity energy storage capacitors", the methods for peak power and power average design are very worthy of attention. The calculation method mentioned is a basic concept. Does Vicor have any recommended reference algorithms and specific considerations? It would be best to focus on it, and also introduce the corresponding recommended products or modules. | | @jean1 | How to remove noise pollution | | @skywalker_lee | Can the "Power Averaging Design Method" mentioned in the article be applied to low-power application scenarios? For example, when we design an RF system, the sleep state requires a very low current, but the current in the transmitting state is sometimes as high as several amps. In this environment, can the technology introduced in the article be applied? What are the advantages compared with the ordinary method of simply using capacitor energy storage filtering? | | @youzizhile | Does a fixed ratio voltage isolator refer to a transformer? | | @Justice_Gao | The acoustic transducer needs a pulse to trigger the sending signal, but the general power supply design cannot obtain a large power. I wonder if this problem can be solved | | @Break the Tradition | The power averaging design method can improve the power supply efficiency. How much can it improve? Is there any data comparison? | | @xiaozhuang | How can this power supply with fast transient response reduce external electromagnetic radiation? 2 How small can the size of this power supply be? How to consider heat dissipation and reliability? | | @jasonheeeeee | Can the crossover frequency be designed to be high enough to increase the effect speed and reduce the output impedance? Can the same effect of partially increasing the capacitance be achieved? | | @millionmillion | Is the power consumption of the pulse load configuration power supply system itself higher than that of the power supply without this system? Then will the corresponding efficiency be lower? | | @hxm3000 | Does the change of pulse load rely on adjusting the capacitor charge and discharge to adjust the voltage regulation? How is the closed-loop measurement measured in real time and fed back? | | @modoyu4ylp0o | The pulse load is very fast, and the capacitor needs to be charged and discharged. Can real-time tracking be achieved? What are the restrictions? | | @gaon | How to evaluate whether conventional power supply design or power averaging design is more economical and efficient? | | @1055875333 | What factors should be considered when designing a power supply system using the power averaging method? | | @cz0842 | Pulse load will cause some components to charge and discharge continuously, which will accelerate the aging of the components. Is there a solution? | | @247153481 | Choosing a large-capacity energy storage capacitor can stabilize the power supply, but will it bring other side effects? | | @tongshaoqiang | Can the power averaging design method be applied to low-power products with sleep function? Can the average power be measured by measuring the pulse time width using an oscilloscope? |
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