1406296-1

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Part Status:	Active

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1406296-1 Application Field and Working Principle1406296-1 is an integrated circuit (IC) designed for the purpose of controlling in a switching power supply. Switching power supplies enable the conversion of electrical voltage from one level to another with the purpose of providing the correct level for the operation of the electronic device or for the efficient use of electrical power. It offers several features, which enable designers and engineers to design a high efficiency, low standby power, low ripple power supply with a low number of external components.The IC 1406296-1 is composed of an oscillator, a pulse width modulator (PWM), an error amplifier, an overcurrent protection (OCP) circuit, and an over-temperature protection circuit. The oscillator generates the switching frequency. The PWM generates the high and low duty cycles for the switching device, while the error amplifier controls the peak modulation voltage level. The OCP circuit protects the circuit from sudden current spikes that may occur while switching. The over-temperature protection circuit provides a safe shutdown in the event of an over-temperature fault.The IC 1406296-1 is used mainly in switched mode power supplies (SMPS) applications. Its features and functions are suitable for these applications. It provides control functions from power stages arrangement, simple boost operation up to 6 multiple output powers. It contains periodically updated information for the desired output power and various control pins for adjusting duty cycles or PWM. These features enable flexibility during operation. The IC also has the capability of handling input voltage range from 1V to 16V which is suitable for domestic and industrial power supply designs.In general, the IC design aims to provide a single chip solution for an efficient, low power, low ripple and low cost power supply. The device uses low power CMOS logic and features a low standby power requirement. It also uses a simple approach to circuit design, eliminating the need for additional external components and improving efficiency. This integrated circuit also prevents over-temperature occurrences from damaging the device. Furthermore, the OCP function enables a quick response to short circuit detection due to current loss or other faults.Generally, a power supply control circuit consists of an oscillator, a pulse width modulation circuit, an error amplifier, an overcurrent protection circuit and an over-temperature protection circuit. 1406296-1 IC integrates this circuit onto a single IC, thus enabling a comprehensive, low-cost power supply control solution. This energy efficient power supply solution is suitable for multiple output designs. The device also features a low standby power requirement, a wide input voltage range and a quick response OCP circuit. It also has the features of power stages arrangement for boosting, as well as other control pins to adjust duty cycles or PWM. These features provide additional flexibility of operation.

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