UCC38083P

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The UCC38083P is a controller IC that is typically used in offline AC/DC converter systems. It is a Pulse Width Modulation (PWM) controller with advanced protection features, such as Under Voltage Lockout (UVLO), over temperature protection (OTP), and current limit protection (CLP). The UCC38083P is ideal for applications that require robust protection, high efficiency, and cost-sensitive control solutions.

The UCC38083P features a low startup current and a fast transient response which make it suitable for regulated or quasi-regulated flyback, forward, and flyback-boost converters. The built-in protections provided by the device provide reliable operation under a wide range of input mains voltages, making it an ideal controller IC for applications operating from a wide range of input sources.

The UCC38083P uses PWM control to regulate output voltage. The device’s PWM circuitry operates at a switching frequency of 100kHz, allowing for greater efficiency in the design of power supplies and converters. The pulse width modulated outputs are adjustable in order to achieve the desired voltage regulation. The device also features a soft-start feature which gradually increases the output voltage, reducing the inrush current at start-up and limiting the impact of system form factors.

The device’s advanced protection features provide robust operation in a variety of situations. The Under Voltage Lockout (UVLO) feature prevents start up in the event of a voltage drop, while the over temperature protection (OTP) shuts down the device if the internal temperature exceeds a certain threshold. In addition, the current limit protection (CLP) is designed to help protect the device from catastrophic failure due to excessive current draw. The UCC38083P also features a Power-Good (PG) flag which signals when the output of the converter is within tolerance.

The UCC38083P is a cost-competitive controller IC for use in offline AC/DC converter systems. It is ideally suited for applications that require robust protection, high efficiency, and cost-sensitive control solutions. Its low startup current and fast transient response make it ideal for regulating or quasi-regulated flyback, forward, and flyback-boost converters. The suite of protection features provide reliable operation under a wide range of input mains voltages, while the PWM control allows efficient operation with adjustable output voltages. Moreover, the Power-Good flag alerts the user when the output of the converter is within tolerance. Together, these features make the UCC38083P an excellent choice for cost-sensitive, efficient, and reliable AC/DC conversion.

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