UCC38083PW

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PMIC - AC DC Converters, Offline Switchers

UCC38083PW application field and working principle
The UCC38083PW is a high performance power solution for AC to DC (alternating current to direct current) conversion. This switching solution works by regulating incoming AC power at the input and then supplying regulated DC power at the outputs. The UCC38083PW from Texas Instruments is designed to operate from a wide input AC voltage range and is intended for applications requiring low cost, high efficiency solutions. It can deliver up to 800mA of output current and features a variety of protection features such as overload protection and short circuit protection.

The UCC38083PW is designed for use in typical offline applications, like AC/DC adapters, mobile power charger and other power supplies. It is specificially tailored for low power applications such as portable desktop PCs, laptop AC/DC adapters, and mobile phone chargers. It can also be used in a PoE (Power over Ethernet) application.

When used as an offline switcher, the UCC38083PW can provide the constant regulated DC voltage that is needed for reliable operation of the device. The switching solution is designed to operate from an input AC voltage range of between 85V and 264V, making it ideal for use with a variety of input AC voltage sources. Additionally, it includes a wide range of safety and EMI protection, such as over-current/voltage protection, and is compliant to the EN55024 standard.

The UCC38083PW is designed to operate in a pair of high-side and low-side switches that act as a half-bridge design. This design provides a bridge between the incoming AC power and the regulated DC output. The high-side switch is connected to the positive input voltage of the AC source. The low-side switch is connected to the negative output voltage terminal. When the AC input voltage is greater than the DC output voltage, the high-side switch will turn on and the low-side switch will turn off, allowing the output voltage to be regulated. When the input AC voltage drops below the output DC voltage, the low-side switch turns on and the high-side switch turns off, preventing the output voltage from going below the desired output voltage.

The UCC38083PW is a highly versatile switching solution for AC to DC conversion applications. It is designed for use in cost-sensitive applications and provides a reliable voltage regulation solution for use in a wide range of devices. The combination of the high-side and low-side switch make this an extremely robust and efficient solution for conversion of AC to DC power.

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