TEA19161T/1Y

Series:	GreenChip™
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Mode:	Discontinuous Conduction (DCM)
Frequency - Switching:	500kHz
Voltage - Supply:	100VAC
Operating Temperature:	-40°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SO

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Introduction:

Power Factor Correction (PFC) is a technique used to improve the power factor of an AC power system. It is a key element of modern power electronics, as it ensures that electrical systems comply with the required regulations and standards, and improves power quality, efficiency, and reliability. In this article, we discuss the application field and working principle of TEA19161T/1Y, a commonly used PFC controller.

Application field of TEA19161T/1Y:

The TEA19161T/1Y is a high performance, cost effective PFC controller designed for high-efficiency ballast and LED lighting applications. It features external loop compensation and requires only a single resistor for minimum startup current, making it an ideal solution for cost sensitive applications. It is suitable for secondary current sense and power factor correction in off-line converters up to 400W.

Working principle of TEA19161T/1Y:

The working principle of the TEA19161T/1Y is based on two-stage regulation. During the first stage, an input voltage sense loop is used to regulate the input current to a constant level. During the second stage, a constant on time (COT) control algorithm is used to regulate the output voltage. The controller regulates an output voltage that is different from the input voltage to ensure a high power factor and an optimal power efficiency.The controller operates in either critical conduction mode (CCM) or discontinuous conduction mode (DCM), depending on the input voltage, output power, and filter design. The controller includes a unique automatic transition feature that automatically switches between the two modes without affecting the stability of the power converter.

Conclusion:

The TEA19161T/1Y is a high performance and cost effective PFC controller designed for high-efficiency ballast and LED lighting applications. It features external loop compensation and requires only a single resistor for minimum startup current, making it an ideal solution for cost sensitive applications. Its two-stage regulation, COT control algorithm and automatic transition feature provides high power factor and power efficiency, and ensures stable operation.

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