TNY255P

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Power management integrated circuits (PMICs) are specialised and highly integrated circuits used to simplify and optimise the switching power supply design. PMICs come in various forms including AC-DC converters, offline switchers, customised or programmable integrated circuits, multiple voltage references and reference designs.

The TNY255P is a low-power AC-DC converter integrated circuit (IC) optimized for offline switching applications such as offline adapter/charger and white goods. This PMIC provides primary-side regulation to reduce the number of external components required. The resonant pulse-width modulated (PWM) control is used to provide excellent load and line regulation with low EMI emissions.

Features of the TNY255P IC

The TNY255P offers many features and benefits that ensure efficient operation and lower system cost. It provides a wide range of power management features to maximize reliability and simplify system design. The TNY255P supports a wide input voltage of 85-265VAC, a wide output voltage of 25-125VAC and an adjustable frequency of 40-80kHz. In addition, the TNY255P has an embedded safety timer protection and a highly efficient pulse-width modulated (PWM) control to improve system performance. It also features a primary-side constant voltage (CV) regulation and soft-start function to ensure quick and safe operation.

Applications of the TNY255P

The TNY255P IC is suitable for various applications such as personal computers (PCs), digital video recorders (DVRs), gaming consoles, thin clients, Internet of Things (IoT) devices, liquid crystal displays (LCDs), air conditioners, home appliances, and adaptors for AC-DC and DC-DC applications. With its wide input voltage range and pulse-width modulation (PWM) control, the IC can also be used for lighting and small fans/blower applications. In addition, the TNY255P is capable of providing a high power factor and low standby power consumption, which makes it an ideal choice for energy efficient applications.

Working Principle of the TNY255P

The TNY255P uses a current-mode, fixed-frequency, primary-side resonant-mode PWM controller with a wide input voltage range. This PMIC has an internal lo

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