Fairchild Semiconductor helps designers reach high efficiency levels to meet stringent energy efficiency standards, low-standby power and EMI regulations worldwide with their new Green FPS switches, the FSQ0765R and FSQ0565R. These power switches feature Fairchilds proprietary valley switching, hybrid control and inherent frequency modulation, resulting in reduced switching losses by up to 500mW and EMI by up to 5dB over hard-switch converter topologies. These switches are instrumental in meeting energy regulations specified by the California Energy Commission (CEC), EU Code of Conduct and Group for Energy Efficient Appliances (GEEA). As with all of Fairchilds Green FPS products, the FSQ0765R and FSQ0565R feature advanced burst mode operation to reduce standby power consumption and minimize audible noise - critical for meeting the 1 Watt Initiative.
Fairchilds proprietary valley switching operation enables the MOSFET to turn on with minimum drain voltage and offers inherent frequency modulation resulting in a dramatic reduction in EMI noise. Additionally, it also enables these converters to perform soft switching, therefore increasing power conversion efficiency while drastically reducing heat generation. The hybrid control technique makes the power switch operate in continuous-current-mode (CCM) at low line and in valley switched discontinuous-current-mode (DCM) at high line, preventing any power deterioration at low line operation.
The Green FPS FSQ0765R and FSQ0565R also ensure system reliability by offering excellent surge characteristics as well as various protection features including overload protection (OLP), over-voltage protection (OVP), abnormal over-current protection (AOCP), internal thermal shutdown (TSD) with hysteresis, output short protection (OSP) and under-voltage lockout (UVLO).
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