TOP256GN

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The TOP256GN, produced by Power Integrations, is a complete power and voltage regulator solution for AC DC converters, offline switchers, portable electronics, and more. The TOP256GN provides exceptional performance, options and features for designers in the power electronics community. The device features low on-resistance MOSFETs and a wide range of operating voltages, as well as an optimized PWM scheme, advanced input protection, and an adjustable frequency range. The device is offered in an 8-pin SOIC package, ideal for space-constrained or highly dense applications alike.

The TOP256GN is a complete monolithic power switch integrated with a low dropout linear regulator. The linear regulator portion of the device provides a regulated output while the power switch portion offers efficient and precise control switchover mode conversion. The linear regulator offers a wide operating voltage range and low dropout voltage. The power switch provides a wide range of on-resistance values, adjustable frequency range, and optimized PWM switchover algorithms. Both portions of the device are designed to work together to create a highly scalable, efficient and reliable solution for AC/DC converters, offline switchers, portable electronics and more.

The TOP256GN provides an under voltage lockout and over voltage protection. The under voltage lockout (UVLO) feature prevents the IC from entering an over-current state if the input voltage drops below the UVLO threshold and allows the IC to resume normal operation when the input voltage is within the UVLO range. The over voltage protection (OVP) feature provides added protection against input voltages that exceed a certain threshold, helping to protect the device as well as other components connected to and/or around it.

The TOP256GN also provides advanced input protection circuitry that helps protect the device in transient conditions. This includes an over-current protection (OCP) feature, a neutral clamp diode protection circuit, and flyback protection. The OCP feature helps protect the device in situations where an input current significantly exceeds a certain threshold, while the neutral clamp diode protection helps protect the device from excess voltages present in the input. The flyback protection feature helps prevent the IC from entering an unstable state if a negative output voltage is applied to the input of the device.

The TOP256GN also features an enhanced power switch design. The device uses MOSFETs with low on-resistance, providing more efficient power conversion than other solutions. The power switch features an adjustable frequency range, which can be set at either fixed or variable frequency, depending on the application. The enhanced PWM switchover algorithm helps ensure stable and reliable operation by controlling the switching elements for optimal performance. The device also allows for improved electromagnetic interference (EMI) control, providing reduced noise and improved system reliability.

In conclusion, the TOP256GN is an ideal device choice for AC/ DC converters, offline switchers, portable electronics, and other applications that require power conversion and regulation. The device features a low on-resistance MOSFET, wide operating voltage range, adjustable frequency range, advanced input protection, and an optimized PWM switchover algorithm. The TOP256GN is offered in an 8-pin SOIC package, ideal for space-constrained or highly dense applications. The device provides an excellent balance of power efficiency, scalability, and reliability, making it an optimal solution for a wide range of applications in the power electronics industry.

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