Highest Saturation Current in Smallest SMT Power Inductor

Posted by doEEEt Media Group
On July 7, 2023
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Würth Elektronik presents WE-HEPC, its smallest NiZn-ferrite-based self-shielded power inductor to date. Thanks to a new and completely automated manufacturing process, these power inductors provide consistently high quality and higher saturation current than any previous or known competitive product. In all, there are 15 models available with different attributes (L: 3.3 ~ 100 μH; ISAT: 1.3 ~ 3.3 A) and in package sizes 5030 (4.8 x 4.8 x 1.8 mm) and 6030 (5.9 x 5.9 x 2.85 mm).

EEE Components, PASSIVES

Transformer Design impact for EMC

Posted by doEEEt Media Group
On March 7, 2023
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This Würth Elektronik webinar look at the transformers impact on conducted and radiated EMI in an application. The presentation look at practical construction techniques of transformer design for EMC potential emissions mitigation.

EEE Components, PASSIVES

Evaluation of Active Balancing Circuits for Supercapacitors

Posted by doEEEt Media Group
On February 9, 2023
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TI developed the circuit based on circuits already in use for Li-ion batteries. The integrated circuit bq33100 [1] provides more than the balancing of supercapacitor banks, being a single-chip solution that offers many features for charge control, monitoring, and protection of maximum of 5 series capacitors.

EEE Components, PASSIVES

Supercapacitor Balancing Methods Comparison

Posted by doEEEt Media Group
On February 9, 2023
0

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Balancing – Theoretical Background

Posted by doEEEt Media Group
On February 9, 2023
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A capacitor may be modeled by a parallel connection of an R-C unit and a insulation resistance. For the moment we neglect the insulation resistance and consider a series stack of two capacitors with capacities C1 and C2

EEE Components, PASSIVES

Supercapacitors Balancing Strategies

Posted by doEEEt Media Group
On February 9, 2023
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Active balancing involves the utilization of actively controlled switches or amplifying systems. [3, 8] Passive balancing utilizes shunts or self-regulating resistors to lower the effect of overvoltage. Compared to passive balancing, active balancing may be fast, in some cases energy efficient but also relatively cost intensive

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Supercapacitors voltage measurements

Posted by doEEEt Media Group
On February 9, 2023
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The voltage measurements were performed with a self-developed measurement setup, based on the integrated circuit CY8CKIT-059 from PSoC. The data acquisition was utilized with an Excel-script. The measurement setup including the programming of the script were developed by Jon-Izkue Rodriguez from WE eiSos.

EEE Components, PASSIVES

What is the Best Supercapacitor Balancing Method ?

Posted by doEEEt Media Group
On February 9, 2023
0

Balancing with the resistor is the slowest balancing strategy but yields the advantage of low power consumption, low cost, and easy circuit design. Depending on the resistors, it might be suitable for long-term standalone applications. The balancing speed of the Zener diode is moderate. It yields the advantage of relatively low power consumption, low cost, and easy circuit design. The relatively low power dissipation makes it suitable for long term standalone applications.

EEE Components, PASSIVES

Webinar: A real life Supercapacitor backup solution

Posted by doEEEt Media Group
On February 9, 2023
0

If the application's power supply breaks down, this is not a pleasant situation. Würth Elektronik eiSos built up a demonstration showing a hot-swappable backup solution with a size of 10 cm x 18.5 cm (3.94 inch x 7.3 inches). The input voltage is 24V, and the backup output voltage is 12 V for a normal industrial power rail application. The available output power is 30 W (12 V @ 2.5 A). We also talk about the classification of Supercapacitors, the model parameters and performance, and the charge-, discharge, and frequency behavior.

EEE Components, PASSIVES

Snap-In Supercapacitors

Posted by doEEEt Media Group
On January 13, 2023
0

The WCAP-SISC EDLC snap-in supercapacitors are available with capacitance values of 100 F and 350 F – this is the perfect solution for applications with high power and high energy requirements, such as UPS or energy storage solutions.

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