MIC38C43BN

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The MIC38C43BN is a Pulse-Width Modulation (PWM) Controller designed for DC to DC power conversion applications. It provides the necessary control signals for onboard power supplies and DC to DC converters. The MIC38C43BN covers a wide input voltage range from 0.5V to 6.5V, supports an operating temperature range of -40°C to +125°C and is equipped with integrated protection features for robust operation in harsh industrial applications.

The MIC38C43BN is part of Texas Instruments’ Pulse-Width Modulation (PWM) Controller product family. The MIC38C43BN has been specifically designed to be used in a wide range of power conversion applications such as motor control, power supplies, DC-DC converters and battery management. It offers comprehensive over-voltage, over-current, thermal overload and undervoltage protection for robust operation in harsh industrial applications.

Application Field

The MIC38C43BN from Texas Instruments is designed for use in a range of power conversion applications including motor control, power supplies, DC-DC converters and battery management. This PWM controller is suitable for a wide input voltage range from 0.5V to 6.5V, making it well-suited for applications that require precise control of the output voltage and/or current. It is also suitable for applications that require precise control of the output voltage and/or current such as power supplies, DC-DC converters, battery management systems and motor control applications. The integrated protection features on the MIC38C43BN ensure reliable operation in a wide range of harsh industrial applications.

Working Principle

The MIC38C43BN from Texas Instruments is a Pulse-Width Modulation (PWM) Controller that uses a hysteretic current mode control method. This type of control is based on the difference between the supply voltage and the output voltage of the power converter. The PWM controller compares the supply voltage and the output voltage using an internal comparator. When the output voltage is lower than the supply voltage, the internal hysteretic comparator increases the duty cycle, thus increasing the output power until the output voltage reaches the set point. When the output voltage is higher, the duty cycle is decreased to reduce the output power until the output voltage is at set point.

The MIC38C43BN contains some additional features to protect the IC against unexpected damages. These features include over-voltage protection, under-voltage protection, over-current protection, short circuit protection and thermal overload protection. These features provide reliable protection against unexpected damages and extend the life of the power converter. The MIC38C43BN also contains an adjustable soft-start feature to reduce the inrush current, which further reduces the risk of damage to the power converter and ensures a smooth startup.

The MIC38C43BN is a highly integrated PWM controller for DC to DC power conversion. It provides the necessary control signals for onboard power supplies, DC-DC converters and can be used in a range of power conversion applications. With its wide input voltage range, operating temperature range and integrated protection features, the MIC38C43BN is well-suited for a wide range of industrial applications.

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