The IC component FSFR1800XCL is a high-performance integrated power supply circuit designed for offline power conversion applications. It is part of the FSFR-XCL series developed by ON Semiconductor. This component offers several key features that make it suitable for various power supply designs.
The FSFR1800XCL is an advanced integrated power switch featuring a self-adjusting frequency and RMS current limit. It is capable of providing highly efficient and reliable power conversion with minimal external components. This versatility makes it a preferred choice for applications like LED lighting, industrial controls, and consumer electronics.
One of the prominent features of the FSFR1800XCL is its self-adjusting frequency characteristic. This feature determines the switching frequency based on the load and input voltage, optimizing the overall circuit efficiency. The device achieves this by automatically adjusting the frequency to achieve near-resonant operation, minimizing switching losses and improving overall power efficiency.
Additionally, the IC component incorporates pulse frequency modulation (PFM) and quasi-resonant (QR) control techniques. These techniques enable the device to operate in Pulse Width Modulation (PWM) mode under heavy load conditions and transition to PFM mode under light load or standby conditions. This capability enhances the overall efficiency by reducing power losses during light load operation.
Furthermore, the FSFR1800XCL supports burst-mode operation, which allows the power supply to enter a low-power sleep mode during standby or no-load conditions
