TOP269KG-TL Integrated Circuits (ICs)

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The TOP269KG-TL is an integrated offline switcher IC that offers integrated, high-performance, low-cost, AC/DC conversion solutions for diverse application fields.

The TOP269KG-TL integrates a 500 V high voltage MOSFET and a low side MOSFET, allowing for high efficiency with a very low standby power consumption. Furthermore, this IC is a 2A current mode single-stage PWM controller, featuring load feed-forward control and pre-compensation with a low VCC start-up Threshold, allowing for reliable performance with low THD and EMI. This IC also includes an error amplifier, reference/carrier generator and fast over-current protection circuits, as well as an improved leading edge dimming mode.

The TOP269KG-TL is used in a variety of applications, such as high power AC/DC adapters, SMPS, general demog and industrial control. In addition, its the ability to limit the output voltage and current, makes it well suited for LED lighting applications. The TOP269KG-TL is simply and easily configured, using the integrated soft-start, frequency jittering and under-voltage lockout functions, allowing for a successful and reliable design.

The working principle of the TOP269KG-TL is quite straightforward and easy to understand. First, the control is provided by the internal comparator (COMP), oscillator and error amplifier. These are combined with the two high and low side MOSFETs to form the switch. The oscillator produces a triangular saw-tooth wave, which is sent to two comparators. The non-inverting comparator (C4) is connected to the sampling voltage, and is compared with the reference voltage, VREF. The results of this comparison are then used to turn on and off the MOSFETs, resulting in a switching power supply. The second comparator (C5) is connected to the output voltage, and the difference between the reference voltage and the output voltage, is used to regulate the output voltage.

The TOP269KG-TL utilizes an advanced, high voltage MOSFET technology to ensure high performance and low power consumption. Its robust protection circuit includes Overvoltage Protection, Overcurrent Protection, and Over-temperature Protection. Additionally, the TOP269KG-TL is designed to operate at a wide input voltage range from 4.5V to 18V, allowing for high power with a low power consumption.

The TOP269KG-TL is a highly reliable, robust and efficient converter IC, capable of meeting the needs of many diverse application fields. Its low standby power consumption allows for a high efficiency in all operating modes, while its high voltage, low side MOSFET architecture protects the design from power surge, and provides simple control features to improve the design efficiency.

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