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SB360 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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SB360 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 12 page www.fairchildsemi.com © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev. 1.0.0 • 11/2/10 AN-9719 Applying Fairchild Power Switch (FPS™) FSL1x7 to Low- Power Supplies 1. Introduction The highly integrated FSL-series consists of an integrated current-mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET. It is specifically designed for high-performance offline Switched Mode Power Supplies (SMPS) with minimal external components. The features of the integrated PWM controller include a proprietary green-mode function providing off-time modulation to linearly decrease the switching frequency at light-load conditions to minimize standby power consumption. The PWM controller is manufactured using the BiCMOS process to further reduce power consumption. The green mode and burst mode functions with a low operating current (2mA in green mode) maximize light-load efficiency so that the power supply can meet stringent standby power regulations. The FSL-series has a built-in synchronized slope compensation to achieve stable peak-current-mode control. The proprietary external line compensation ensures constant output power limit over a wide AC input voltage range, 90VAC to 264VAC, and helps optimize the power stage. Many protection functions; such as open–loop / overload protection (OLP), over-voltage protection (OVP), and over- temperature protection (OTP); are fully integrated into FSL- series. These features improve the SMPS reliability without increasing system cost. Compared to a discrete MOSFET and controller or RCC switching converter solution, the FSL-series reduces total component count, converter size, and weight while increasing efficiency, productivity, and system reliability. These devices provide a basic platform for design of cost- effective flyback converters. Figure 1. Typical Application Circuit |
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