VIPER06XSTR Integrated Circuits (ICs)

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PMIC - AC DC Converters, Offline Switchers

VIPER06XSTR is a series of high performance isolated Pulse Width Modulated (PWM) integrated circuits specifically designed to address the needs of offline ACDC applications such as lighting, power supplies, motor speed control, and other Industrial applications. It is capable of operating at a switching frequency of up to 700KHz and delivering output currents up to 10A. VIPER06XSTR incorporates all the necessary control components (e.g. an oscillator, timer, protection circuits, and pulse return control) to provide complete solutions for ACDC conversion.

Application Field

VIPER06XSTR is the ideal solution for cost-sensitive, high density, and low noise ACDC applications including industrial controls, consumer electronics, computer and peripheral power sources, telecom, medical electronics, and any other applications requiring ACDC conversion. It is equipped with an array of integrated protection features to ensure a safe and robust operation, including fast and current limiting circuits, thermal protection, and output short protection.

Working Principle

VIPER06XSTR works by generating a Pulse Width Modulated (PWM) signal and using it to switch between power supply source and load. Two signals control this process: a clock signal (CLK) acts as a timing signal, and a signal from a power supply circuit, referred to as a duty rate signal, is used to control the duty cycle of the PWM signal. The duty rate signal determines the duty cycle, which is the ratio between the amount of time the signal is “on” and the amount of time it is “off”. This duty cycle is directly related to the output voltage, so it is necessary to adjust the duty rate signal to provide the desired voltage. The frequency of the PWM signal is adjusted using an external resistor, allowing the user to vary it from 10 kHz up to 700 kHz.

In addition to the control of the PWM signal, VIPER06XSTR integrates several protection features to ensure the safe, reliable operation of the system. These include fast and current limiting circuits, overvoltage and overcurrent protections, output short protection, and thermal protection. All these features ensure high system reliability and performance.

Conclusion

VIPER06XSTR is an ideal choice for any ACDC application. Its PWM control and integrated protection features ensure smooth operation, reliable switching, and maximum system performance. The adjustable frequency up to 700 kHz makes it an excellent choice for space-limited designs, and its wide input voltage range ensures compatibility with a variety of power sources. The VIPER06XSTR series is the perfect solution for any ACDC application requiring cost-effective, energy efficient, and reliable performance.

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