IRS2166DCD

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The IRS2166DCD is an inductorless design for switch mode power supply (SMPS) systems, commonly used in LED lighting solutions. The IRS2166DCD circuitry has been designed for use in lighting, ballast controllers and other power supply applications where high efficiency, low EMI and precise, stable secondary-side control is required. By offering a highly integrated solution, the IRS2166DCD can help designers reduce system size, complexity, cost and risk while meeting their application requirements.

The flexible, synchronous design of the IRS2166DCD, featuring integrated rectifying diode and low-side power MOSFETs, helps reduce the complexity of the SMPS design as compared to traditional inductor-based designs. Also, since the integrated rectifying diode reduces the power losses, the efficiency of the power supply system is improved. It also features an on-chip, digitally controlled deadtime generator, which simplifies loop compensation and helps minimize EMI.

The IRS2166DCD ballast controller offers a power factor correction (PFC) capability for primary-side PFC implementations. The PFC feature is an ideal choice for applications where high power factor is desired, such as higher power LED lighting or rapid-start ballasts. The IRS2166DCD also includes a built-in, programmable frequency dithering mechanism, which helps further reduce EMI emissions.

When used as a ballast controller, the IRS2166DCD offers design flexibility for applications that require either quasi-resonant (QR) or coupled-inductor resonant output. It features integrated rectifying diode, low-side power MOSFETs, on-chip driver and bias circuit, and a linear regulator, which eliminates the need for an external reference voltage IC. Additionally, a built-in current-mode control loop optimizes overall performance over a wide range of load conditions.

The IRS2166DCD features a wide range of protection features, including voltage over- current protection (OCP), thermal shutdown (TSD), brown-out protection (BOP) and under-voltage lockout (UVLO). Additionally, its integrated soft-start circuitry helps the SMPS startup and reduce inrush current when the system is powered up.

The IRS2166DCD operates from an input supply voltage range from 5 V to 25 V, allowing designers to use a single device for a variety of applications. Additionally, the device is available in four packages that range from extremely small to large.

In conclusion, the IRS2166DCD is a powerful and highly efficient device for LED lighting, ballast controller and other switch mode power supply applications. It features an integrated rectifying diode, low-side MOSFETs, on-chip driver, bias and linear regulator, as well as a wide range of protection features. With an input supply voltage range from 5 V to 25 V and four packages that range from extremely small to large, the IRS2166DCD can help designers reduce system size, complexity, cost and risk while meeting application requirements.

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