TC4428EPA

TC4428EPA is an advanced monolithic gate driver designed for high efficiency power factor correction (PFC) flyback applications. This application note describes its features, operating characteristics, characteristics, and recommended applications. It also provides a comprehensive overview of how to use the device in various PFC applications.

Features

TC4428EPA includes an integrated power switch and MOSFET driver integrated circuit. This device is optimally equipped to operate in different applications that require high-frequency power conversion. It combines the best of both analog and digital technologies to deliver outstanding performance. The device is suitable for a wide range of PFC applications from DC-DC converters, low power supplies, high voltage flyback circuits, current mode regulators, and other high power frequency conversions.

The device features a high-speed gate driving circuit with adjustable deadtime, a low current bias winding, edge rate control, and voltage-controlled impedance matching. The PWM power switch has low gate ringer resistance, fast response time, and low switching losses. It also includes an integrated current sensing circuit, a Snubber decoupling output, and a voltage controlled gate drive enable distortion control. In addition, the device includes an internal self-supply voltage circuit, which eliminates the need for additional external components.

Working Principle

TC4428EPA is a single-chip PFC solution that uses a combination of advanced digital and analog technology. The PWM power switch has low gate ringing resistance, fast response time, and low switching losses. The voltage-controlled impedance matching provides precise control of the flyback topology, reducing components cost and increasing efficiency. The device also includes an internal self-supply voltage circuit, which eliminates the need for additional external components.

The PWM signal is generated by the TC4428EPA\'s internal oscillator circuit, and is modulated according to the input voltage level. The device will automatically shut off the PFC converter once the ramp up/down signal reaches the threshold voltage. Furthermore, the Snubber decoupling output provides the necessary additional security to protect the internal components from any external interference.

Applications

The TC4428EPA is especially suited for use in power factor correction (PFC) flyback applications, including applications that require high-frequency power conversion such as DC-DC converters, low power supplies, high voltage flyback circuits, and current mode regulators. The device is also suitable for use in automotive and lighting applications, where it can improve the overall power efficiency. It is also ideal for high-frequency switch-mode power supplies and other related applications.

Conclusion

To summarize, TC4428EPA is an advanced monolithic gate driver designed for high efficiency power factor correction (PFC) flyback applications. It features an integrated power switch and MOSFET driver, low gate ringing resistance, fast response time, low switching losses, voltage-controlled impedance matching, edge rate control, and an internal self-supply voltage circuit. In addition, the device is especially suited for use in PFC flyback applications, automotive and lighting applications, high-frequency switch-mode power supplies, and other related applications.