LTC4412HVIS6#TRMPBF Integrated Circuits (ICs)

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The LTC4412HVIS6#TRMPBF is power management integrated circuit (PMIC) product, which is essentially an OR controller, ideal diode and esd protection combination. This product family consists of high-efficiency OR-ing controllers ideal to replace parallel diode ORs in multiple-output voltage rail applications. The following article will explain the application field and working principle of this device.

Application Field

The LTC4412 is designed for operation in harsh automation environment and it is widely used in automotive and industrial applications. Also, it is suitable for applications in renewable energy systems, energy harvesting, power management, and power converters. It helps in satisfying the EMC recommendations and it is very effective in conserving the efficiency of power conversion systems.

In automotive applications, its various cost-effective features make it a great choice for battery OR-ing devices. It makes sure that the required power is delivered to the battery in a reliable and balanced fashion. It provides a high Peak-to-Average Current Ratio (PACR), low profile, fast response and ESD protection.

It is also well-suited for harsh industrial automation systems, in order to provide efficient and reliable operation, and suits medium-to-high power applications. Moreover, it is one of the most reliable and preferred choice for such applications, as it provides excellent thermal performance and robustness.

Working Principle

The LTC4412 series consists of four N-channel MOSFETs, each rated for 20A, that are connected in parallel to form an OR circuit. The OR logic is handled by the device’s internal logic-controlled OR logic circuit. The logic input is used to select between two high-voltage source inputs. When one of the logic inputs is high, the MOSFETs connected to that high-voltage source will be turned on, allowing current to flow through it. When both logic inputs are low, the MOSFETs connected to each of the high-voltage sources will be turned off.

The device also has an internal charge pump circuit, which allows it to operate in a wide input voltage range, enabling it to provide excellent response time and high load current range. The device includes charge pump circuitry to provide high efficiency at all load conditions, without the need for external components.

The LTC4412 also features robust ESD protection, which protects the sensitive internal circuitry from the effects of electrostatic discharge, and eliminates the need for extra ESD protection components. In addition, the device also features wide temperature range operation, up to 150°C.

Conclusion

The LTC4412HVIS6#TRMPBF is an OR controller, ideal diode, and ESD protection PMIC device optimized for use in harsh environment, such as automotive and industrial applications. It offers many efficient features and cost-saving benefits, due to its internal logic-controlled OR logic circuit, charge pump circuitry and wide temperature range operation. This product family helps in providing reliable performance and protecting sensitive internal circuitry, thereby conserving the efficiency of power conversion systems.

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