LFA100F-15-SNCG

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction to AC–DC Converters:

An AC-DC converter is a device which converts Alternating Current (AC) to Direct Current (DC). AC-DC converters come in many different configurations and sizes, with each designed to meet a variety of specific needs. Common applications for AC-DC converters include voltage regulation, power supply design, motor control, solar power conversion, energy storage, and remote sensing.

An AC-DC converter typically uses one or more high-frequency DC-DC power converters, along with additional components, such as switches, diodes, and rectifiers, to convert AC to DC. A typical AC-DC Converter is designed to convert a relatively high input AC voltage into a much lower output DC voltage. In the case of voltage regulation, the output is used to precisely control a load on the system.

Overview of the LFA100F-15-SNCG AC-DC Converter:

The LFA100F-15-SNCG is an AC-DC converter manufactured by ST Microelectronics. It is a non-isolated Flyback power supply with a maximum operating voltage of 100V and a maximum output power of 72 W. It is designed to be used as an offline power supply solution for systems which require a low-profile solution. The device includes a built-in PFC circuit, which enables high efficiency under light and medium-load conditions.

The LFA100F-15-SNCG includes a range of features and protection mechanisms, which ensure reliable operation and protection against power surges. These features include a power-good signal, adjustable primary-side and secondary-side CV/CC loops, active compensation, and over-temperature and over-voltage protection.

The device can be used in a variety of applications, including appliances, LED lighting, industrial equipment, and consumer electronics. Its small size and low power requirements make it an ideal replacement for existing AC-DC power solutions.

LFA100F-15-SNCG Working Principle:

The working principle of the LFA100F-15-SNCG AC-DC converter is based on a conventional Flyback topology, which is also known as a voltage-mode converter. The device incorporates a high-frequency transformer, rectifier and control circuit to regulate the output voltage. The main components of the power conversion system are the switch, inductor, diode, capacitor, transformer, primary-side coil, secondary-side coil, and the dead-time circuit.

The inverter switch is used to control the current flowing through the primary-side coil and secondary-side coil. The diode helps to maintain a balanced voltage on the secondary-side coil and the capacitor stores energy when the switch is in the on position. The transformer functions as the energy link between the two coils, transferring energy from the primary side to the secondary side. The dead-time circuit prevents the high- and low-side switches from being active at the same time.

The device regulates the output DC voltage by controlling the duty cycle of the inverter switch. The duty cycle is adjusted using a feedback voltage from the secondary side. The primary-side voltage loop allows the device to provide a stable output voltage over a range of load conditions. The secondary-side voltage loop ensures proper current sharing among the secondary-side coils.

Conclusion:

The LFA100F-15-SNCG is a highly efficient and reliable AC-DC converter, which is suitable for a variety of applications. Its small size and low power requirements make it an ideal replacement for existing AC-DC power solutions. Its features, such as a power-good signal, adjustable primary-side and secondary-side CV/CC loops, active compensation, and over-temperature and over-voltage protection, ensure reliable operation and protection against power surges. The device’s working principle is based on a conventional Flyback topology.

The specific data is subject to PDF, and the above content is for reference