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2021-06-15

How to determine the polarity of a capacitor?

SMD capacitors are generally divided into ceramic capacitors, SMD tantalum capacitors, SMD aluminum electrolytic capacitors, etc. So what kind of characteristics do they have, let's let the editor of

How to determine the polarity of a capacitor?

2018-11-24

Inductors: Development and mass production of high reliability, automotive power inductors

In recent years, with the development of electronic electronics, electronic control units (ECUs) are increasing, and power inductors are used in these power supply circuits. We have developed the CLF6045NI-D series of high-efficiency, high-reliability power inductors that can meet the wide temperature range of -55°C to +150°C, which can meet the harsh environment of the engine compartment with the most severe conditions.

2018-11-24

Vishay Introduces New Inductor for DC/DC Converters

Vishay Intertechnology has introduced two small, high current inductors for the new DC/DC converters. These two new inductors are only 30% high in common inductors, have very low DC resistance, and maintain very low AC losses at 5MHz. They are widely used in personal computers, servers, mobile phones, digital cameras, GPS and other portable electronic products.

2018-11-24

Stacked power inductor for high speed switching frequency DC-DC converter IC

With the versatility of mobile devices, the operating voltage of their power circuits has also diversified. Specifically, in the case of a typical mobile phone, in addition to the original call function, various functions such as a camera, a broadcast, and a television have become a universal standard function. The voltages required for the operation of these functions are different. To this end, the battery voltage must be converted by the power conversion circuit to the voltage required for the normal operation of each circuit. Switching controllers (often referred to as DC-DC converters) with high power conversion efficiency are mostly used.

2018-11-24

AnalogicTech's high-power DC/DC boost converter uses a compact 1mm high inductance

The arduous task faced by designers of many portable systems is to provide a high voltage (5V or higher) power bus in a system powered by a single lithium-ion battery, without taking up very little space.

2018-11-24

Comparison and analysis of buck-boost and Cuk chopper circuit modules

The working principle of the buck-boost circuit is as follows: When the controllable switch V is in the on state, the power supply E supplies power to the inductor L through the controllable switch V and stores the energy in the inductor. At this time, the current flowing out of the power source E is i1, the direction As shown in Figure 4. Capacitor C not only keeps the output voltage constant, but also supplies power to load R.

2018-11-24

Talking about EMC's knowledge of capacitor and inductor device selection

We must also consider these parameters and these features when designing. Let's make a simple comparison. Because ceramic capacitors are internally connected in parallel, the ESR value is also low. Tantalum capacitors are like this. Aluminum electrolysis is like this. In this case, we can use a test, the power supply comes from here, here uses a filtered capacitor. Of course, what does this mean? This is a ceramic with a lower ESR value and a better filtering effect. Of course, everyone said, is it true that some aluminum electrolysis can be replaced by ceramics? It can't be said that the power supply needs a lot of capacity, and you can't change it. If you use it for filtering, you can use a small capacity. Ceramic for large capacity aluminum electrolysis.

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