ACT8893

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

ACT8893 is a high-performance single-chip power management IC (PMIC) that supports energy-saving structures and security designs. It is mainly used for notebook/desktop systems, digital TV/monitor system, personal device power management, communications power management and other power management systems. The ACT8893 is manufactured using TSMC\'s advanced process and features an integrated synchronous voltage regulator, dc-dc controller, non-overlapping power switch, phase-shifted full bridge controller, low-battery detector, reset IC and advanced protection circuit.

The working principle of the ACT8893 is to provide power conversion between a higher external DC voltage and one or more lower, regulated internal voltages. This power conversion process is performed using synchronous buck topology – a technique that converts voltage using a synchronous rectifier. This is done by alternating the switching times of two insulated power switches. The two power switches are physically constructed from metal-oxide-semiconductor field-effect transistors (MOSFET’s). When an electric current passes through a MOSFET, it switches on, allowing current to flow between its two source and drain terminals.

The ACT8893 is essentially a digital control loop integrated into an analog power system. This integrated control loop uses a digital pulse-width modulation (PWM) signal to control the two power switches. The digital PWM signal is generated by a digital controller – essentially a high-speed microprocessor. This microprocessor can be programmed with information such as the required output voltage, target output current and protection thresholds.

The ACT8893 is essentially a single-chip power manager. It combines multiple functional modules such as a voltage regulator, dc-dc controller, non-overlapping power switch, phase-shifted full bridge controller, low-battery detector, and reset IC. This allows the ACT8893 to support multiple power management systems in one device. From a usability perspective, this single-chip solution is far easier than using multiple chip solutions. Furthermore, the microprocessor-based digital control allows the output voltage and current to be precisely controlled with far greater accuracy and reliability than analog control systems.

In the field of power management, the ACT8893 is invaluable for providing both reliable and efficient power management solutions. It is particularly suited for notebook/desktop systems, digital TV/monitor systems, personal device power management, communications power management and other power management systems due to its high integration, flexibility and accuracy. Furthermore, the integrated security features such as current limit, short-circuit protection, and over-voltage protection offer superior safety and security.

The specific data is subject to PDF, and the above content is for reference