STR3A151

The STR3A151 is a PMIC (power management integrated circuit) designed to be an off-line switcher with AC/DC conversion. It is mainly used in high power operations and is ideal for use in AC/DC applications such as telecommunications, industrial control systems, LED lighting, and automotive applications. This PMIC has a wide range of features and benefits that make it suitable for many applications.

Features

• Low Standby Power Consumption
• High Voltage Rating
• High Efficiency AC/DC Conversion
• Low Operating Temperature
• High Precision AC/DC Regulation

Working principle

The STR3A151 operates using a primary-side controller circuit that controls the operation of a power stage using a single winding transformer. The controller uses a control signal on the primary side to control the operation of the power stage. The signal is then forwarded to the secondary side via the transformer. On the secondary side, the signal is used to control the output power. This arrangement requires no additional circuitry to sense the voltage, current, or power on the secondary side.

The controller handles all the necessary power conversion operations such as soft-start, pre-bias startup, over-voltage protection, peak current-mode control for fast transients, short-circuit, and over-temperature protection all at the same time. This feature gives the design great flexibility in applications with a wide range of input and output conditions. The controller also provides high-accuracy current mode control and power factor correction (PFC).

The STR3A151 also has built-in protection circuits to protect against over-voltage, over-current, and short-circuit conditions. This is important to protect the device and the rest of the system in extreme circumstances.

The device also uses an efficient LED driver with constant current protection, isolated voltage sense and external programming precision. This enables the system to be highly efficient and provide accuracy in any current and voltage conditions.

Benefits

• High Power Output
• High Efficiency
• Low Operating Temperatures
• High Precision and Flexibility
• Protection Against Extreme Conditions
• Isolated Voltage Sensing and Programming

The STR3A151 PMIC is designed to be a reliable, efficient, and flexible off-line switcher with AC/DC conversion capabilities. It is ideal for use in a wide variety of applications, such as telecommunications, industrial control systems, LED lighting, and automotive applications. Its features and benefits make it an excellent choice for designs that require a reliable and effective power management solution.