VN1160C-1-E

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PMIC (Power Management Integrated Circuit) includes a variety of important components that allow an ever-growing array of electronic devices and machines to function efficiently and safely. Among them, AC-DC converters, offline switchers, and VN1160C-1-E are essential for managing the power required for various applications. This article will discuss the application field and working principle of the VN1160C-1-E.

Application Field of VN1160C-1-E

The VN1160C-1-E is a low power integrated Voltage Regulator and offline switcher integrated circuit. It is designed for use as a voltage regulator and offline switcher in products such as industrial, office automation, communication and consumer electronics equipment. It has excellent performance characteristics, including a high efficiency, stable output current, low noise, and low voltage drop. It is suitable for use in applications that require a low power consumption, such as multi-level converters, power sources, motor controllers, and other power applications.

The VN1160C-1-E can operate from 5.5 V to 40 V and can output up to 3 A of output current with a minimum load of 1.5 mA. It has excellent efficiency over a wide range of output current, with maximum efficiency of up to 94%. It features low dropout voltage, low noise, and low ripple characteristics. It is fully protected against over-temperature, over-voltage, reverse-voltage, under-voltage, and over-current conditions, making it highly reliable and safe.

The VN1160C-1-E is also suitable for use in battery-powered devices because of its low quiescent current, allowing longer operational battery life. It is particularly useful in solar-powered and automotive applications. The VN1160C-1-E has been designed to meet the requirements of global safety regulations, such as IEC 60950-1 and EN 60335-1.

Working Principle of VN1160C-1-E

The VN1160C-1-E is an integrated Voltage Regulator and Offline Switcher designed for low-power applications. It uses voltage-mode PWM control and operates in a buck topology. The voltage regulation is achieved by means of an on-chip high-bandwidth error amplifier and comparator. The error amplifier receives a signal from the external voltage reference and compares it to the output voltage. The comparator then sends a signal to the internal PWM controller to adjust the duty cycle of the on-chip high-speed switch.

The switching stage of the VN1160C-1-E includes a high-efficiency switch and an inductor. The switch connects the input voltage and the inductor in series and generates a voltage ripple. The output voltage is determined by the size of the inductor and the switch ON time. When the ON time decreases, the output voltage rises. When the ON time increases, the output voltage decreases.

The VN1160C-1-E also has a range of protections designed to protect the Switch and its components from damage. These include output overvoltage protection, undervoltage lockout protection, overcurrent protection, over temperature protection, and programmable soft-start. The output voltage is adjustable by means of a resistor from the 2.5 V to 4.3 V. The switching frequency is adjustable from 300 kHz to 1.2 MHz.

In conclusion, the VN1160C-1-E is an excellent low power integrated Voltage Regulator and Offline Switcher. It is suitable for use in applications that require a low power consumption and provides excellent performance characteristics, such as high efficiency, stable output current, low noise, and low voltage drop. It is particularly useful in solar-powered and automotive applications due its low quiescent current, allowing for longer operational battery life. Its range of protections offers excellent safety and reliability when used in such applications.

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