TDA4862

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Mode:	Discontinuous Conduction (DCM)
Frequency - Switching:	--
Voltage - Supply:	11 V ~ 19 V
Operating Temperature:	-40°C ~ 150°C
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	P-DIP-8
Base Part Number:	TDA4862

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Introduction to TDA4862

TDA4862 is a low-cost power factor correction (PFC) controller for switch-mode power supplies. It provides a flexible range of power factor correction and harmonic performance requirements with minimal external components. It is specially designed for applications with either low or hard-switched power supplies, such as servers, networking, automotive and industrial applications. In addition, it offers a variety of control configurations and functions, such as (but not limited to) duty cycle control, current limit control, input power limit, soft-start and so on.

Working Principle of TDA4862

At its core, the TDA4862 is a buck PFC controller that uses the current-mode control technique. In this technique, the current feedback loop ensures that the switch mode power supply has a precise input current waveform with low ripple. This current-mode control technique is based on the principle of comparing the power output of a transistor to the output current set by a reference signal. The duty cycle of the power switch is varied so that the output power matches the reference signal. This technique of power factor correction ensures that the input current waveform of the switch mode power supply is harmonic and symmetric.

Application Field of TDA4862

The main application field of the TDA4862 is power factor correction and harmonic performance in switch mode power supplies. This controller is a good choice for low cost, low to moderate power applications. It is a good fit for applications such as lighting, laptop adapters, telecom, server, UPS, and other types of switch mode power supplies. Additionally, its excellent integration and adjustable features offer power supply design engineers and system integrators full control of their design.

One of the primary applications of the TDA4862 is in automotive applications. It is used in systems like electric and hybrid electric vehicles, as well as in other battery-powered systems. The TDA4862 is used to monitor, optimize and regulate the input current waveform of these systems based on the power factor correction algorithm. Other potential applications of the TDA4862 are found in industrial, networking and server systems, where it is used for power factor correction, thus reducing system harmonic distortion and losses. It is also used in renewable energy systems to improve system energy efficiency.

Conclusion

The TDA4862 is a low-cost, highly integrated power factor correction controller that is designed for mainly low to moderate power applications. Its flexible range of power factor correction and harmonic performance features allow system designers and integrators to maximize their design performance. It is suitable for applications such as automotive, industrial, networks, servers and renewable energy systems, providing power factor correction, energy efficiency and reduced losses.

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