TNY266PN

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The TNY266PN Off-Line PWM Switching Regulator is a highly efficient, low power, easy-to-use, cost-effective AC/DC converter IC. It is designed to provide reliable low-cost power supplies for AC/DC and/or DC/DC value-added products. The TNY266PN is a synchronous rectifier, single stage, multiple-output PWM switching regulator that can provide up to 10A of output current. It can operate from an AC line voltage of 120VAC or 120VAC for DC/DC applications. The TNY266PN provides adjustable voltages in the range of 0.25V to 48V.

In addition to its high efficiency, the TNY266PN is also designed for a wide range of operating conditions. Its soft-start feature ensures low inrush current, low start-up losses, and high accuracy. It has an optional power-up sequencing feature to ensure proper power sequencing during system power-up for multi-output applications. The chip also provides short-circuit protection and an analog current limit feature for added protection.

The TNY266PN implements a buck topology in its power conversion. In buck topology, an input voltage is stepped down by a high-frequency pulse width modulation (PWM) switch. A diode rectifier circuit then converts the switched DC pulses into steady output voltage.

The TNY266PN uses a pulse-width-modulator (PWM) to produce an output voltage based on the integrated circuit (IC)’s internal feedback loop. An external Voltage-control signal sets the voltage level of the PWM output, which is then filtered by a low-pass filter to achieve a steady output voltage.

The TNY266PN offers two methods of frequency selection: either an external resistor or a frequency-chipper pin (FCT) signal could be used to control the PWM frequency. In the case of a source-sink choke output, the TNY266PN features built-in frequency control and synchronization functions.

The TNY266PN provides four over-temperature protection features. The chip includes an adjustable maximum power limit, true temperature compensation, temperature foldback and power limit clamping. This allows for a more robust and reliable operating temperature range for the TNY266PN.

The TNY266PN also offers dynamic voltage scaling (DVS) feature, which allows for efficient voltage and current control. DVS can be used to adjust the output current according to the specific application requirements.

The TNY266PN also provides programmable over-current protection, over-voltage protection, under-voltage protection, open-load protection and over-temperature protection. The chip can also be bridged-booted to support higher output power ranges.

In terms of efficiency, the TNY266PN is considered to be one of the most efficient off-line switching regulator ICs. It provides up to 91% efficiency in typical AC/DC applications and up to 94% efficiency in DC/DC applications. This makes the device highly suitable for both AC/DC and DC/DC applications.

In conclusion, the TNY266PN is a highly efficient, low-power, low-cost AC/DC and DC/DC switching regulator IC that provides reliable, accurate, and safe power supplies for various applications. It is designed to provide high efficiency, low inrush current, and protection features which makes it an attractive solution for power applications.

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