S-8521E22MC-BLHT2G

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Integrated circuits (ICs) are among the most important components used in modern electronic devices. They are used to control a range of functions in a variety of applications, and the functionality and performance of these integrated circuits depend on their design and the materials and processes used in their production. In this article, we’ll focus on one particular IC – the S-8521E22MC-BLHT2G – and Explore Its Application Field and Working Principle.

The S-8521E22MC-BLHT2G, manufactured by Toshiba Corporation, belongs to the PMIC (Power Management Integrated Circuit) product family, and is part of the Voltage Regulators – DC DC Switching Controllers product section.

It is a DC-DC converter that can convert a higher voltage level to a lower voltage level, or vice versa, without any waste. In this converter, the high side and low side of a circuit are connected in a bidirectional way, making it advantageous for power distribution systems. This reversibility allows for reduced power consumption and increased efficiency.

The S-8521E22MC-BLHT2G can support both random pulse-width modulation (PWM) and spread spectrum clock modulation (SSCM) operation. It has various features, enabling adjustable high-side current limit and adjustable low-side current limit, setting a switching frequency to support Active-Mode Frequency Dithering (AMFD). Additionally, it has adjustable UVLO (Under-Voltage Lockout) for each high-side and low-side MOSFETs.

The main applications of this high-quality DC-DC converter are power systems (such as notebookses PC power supplies, consumer electronics and automobiles) and high density industrial motor drives. It is especially suitable for applications with broad input voltage range, such as notebook batteries.

The S-8521E22MC-BLHT2G integrates a low-side control circuit, which works with the switching frequency, voltage detection circuit and PWM protection circuit inside it. This IC also includes current protection and shut-down control functions, adding further reliability to the converter.

It also features various operating modes to optimize the performance and extend the life of the system: operation-, standby-, DSG- and Disable-modes. This wide variety of operating modes makes the S-8521E22MC-BLHT2G an attractive choice for a wide range of DC-DC converter applications, as it has the capability to be adjusted for the application and can also provide protection in hazardous operating conditions.

The S-8521E22MC-BLHT2G also integrates a temperature-compensated reference voltage generator, which works to stabilize the output voltage by accurately setting the switching frequency of the IC. In this IC, a diode-connected P-channel MOSFET is used as the high-side MOSFET, which helps in providing superior thermal performance with low on-resistance.

This IC also features adjustable soft-start capability, which provides a soft start ramp to improve the inrush current during turn-on. Additionally, an over-voltage protection circuit is included to completely cut off the output voltage if the voltage reaches a certain level.

In conclusion, the S-8521E22MC-BLHT2G offers an excellent choice for a wide range of DC-DC converter applications, such as power systems and high density industrial motor drives. Its high-quality performance and versatile feature set make it an ideal choice for those looking for a reliable, flexible and efficient power management solution.

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