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TEA19161CT Datasheet(PDF) 1 Page - NXP Semiconductors |
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TEA19161CT Datasheet(HTML) 1 Page - NXP Semiconductors |
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1 / 44 page  TEA19161CT Digital controller for high-efficiency resonant power supply Rev. 2 — 26 February 2020 Product data sheet 1 General description The TEA19161CT is a fully digital controller for high-efficiency resonant power supplies. Together with the TEA19162CT PFC controller and the TEA1995T dual SR controller, a complete resonant power supply can be built which is easy to design and has a very low component count. This power supply meets the efficiency regulations of Energy Star, the Department of Energy (DoE), the Eco-design directive of the European Union, the European Code of Conduct, and other guidelines. So, any auxiliary low-power supply can be omitted. In contrast to traditional resonant topologies, the TEA19161CT (LLC) shows a high efficiency at low loads due to the newly introduced low-power mode. This mode operates in the power region between continuous switching (also called high-power mode) and burst mode. Because the TEA19161CT is regulated via the primary capacitor voltage, it has accurate information about the power delivered to the output. The measured output power defines the mode of operation (burst mode, low-power mode, or high-power mode). A configuration pin can easily set the transition levels of the operating modes. The TEA19161CT contains a low-voltage die with a fully digital controller for output power control, start-up, initializations, and protections. These protections include overcurrent protection (OCP), overvoltage protection (OVP), open-loop protection (OLP), and capacitive mode regulation (CMR). It also contains a high-voltage silicon-on-insulator (SOI) controller for high-voltage start-up, integrated drivers, level shifter, protections, and circuitry assuring zero-voltage switching. The TEA19161CT is designed to cooperate with the TEA19162CT power factor control (PFC) controller. For communications about start-up and protections, the TEA19161CT contains a digital control interface. The digital control enables a fast latch reset mechanism. It maximizes the overall system efficiency at low output power levels by setting the TEA19162CT to operate in burst mode. The TEA19161CT/TEA19162CT/TEA1995T combination gives an easy to design, highly efficient, and reliable power supply, providing 90 W to 500 W, with a minimum of external components. The system provides a very low no-load input power (< 75 mW; total system including the TEA19161CT/TEA19162CT/TEA1995T combination) and high efficiency from minimum to maximum load. So, any additional low-power supply can be omitted, ensuring a significant system cost saving and highly simplified power supply design. |
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