Inrush Current Limiting PTC Thermistors and Advanced Power Modules: Vishay Intertechnology’s Innovations in Active Charge and Discharge Circuits
Vishay Intertechnology, a leading global manufacturer of discrete semiconductors and passive electronic components, continues to push the boundaries of technological advancements in the field of active charge and discharge circuits. With the introduction of their new series of inrush current limiting PTC thermistors, the company aims to enhance the performance of these circuits, while also addressing the challenges associated with high currents during power-on situations.
Inrush currents, which occur during the initial powering up of electrical devices, can cause significant damage to power supplies and other sensitive components. Vishay’s PTC thermistors provide an effective solution to this problem by limiting the inrush current to a safe level. These thermistors incorporate a positive temperature coefficient (PTC), which means that their resistance increases when the temperature rises. As a result, they act as self-regulating devices that automatically limit the flow of current during the power-on phase.
The new PTC thermistors from Vishay Intertechnology offer several key benefits that greatly enhance their performance in active charge and discharge circuits. They provide a high resistance at room temperature, ensuring that only a minimal amount of current flows during standby mode. This significantly reduces energy consumption and extends the lifespan of the connected devices. Additionally, the thermistors have a low impedance in their conducting state, allowing for effective current flow in active modes and uninterrupted performance.
Vishay Intertechnology has also made significant strides in reducing conduction and switching losses with their redesigned INT-A-PAK package for IGBT power modules. These power modules, built on trench IGBT technology, offer the choice of either low VCE(ON) or low Eoff characteristics for high-current inverter stages. By optimizing these characteristics, Vishay has managed to minimize power losses and improve overall efficiency in power conversion applications.
One of the standout products in Vishay’s portfolio is the Siliconix SiSD5300DN, a 30 V N-Channel MOSFET with Source Flip Technology. This innovative device delivers exceptional performance with its best-in-class on-resistance of 0.71 m at 10 V and on-resistance times gate charge. The Source Flip Technology allows for a significant reduction in on-resistance, resulting in lower power dissipation and improved thermal management. With this technology, Vishay Intertechnology has once again showcased its commitment to developing cutting-edge solutions for the electronics industry.
Driven by its relentless pursuit of innovation, Vishay Intertechnology has established itself as a frontrunner in the semiconductor industry. The company’s continuous advancements in active charge and discharge circuits have not only bolstered the performance of various electronic devices but have also contributed to the overall efficiency and sustainability of power systems.
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