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FSGM0565RBUDTU Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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FSGM0565RBUDTU Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 18 page © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSGM0565RB • Rev. 1.0.0 3 Pin Configuration 6. VSTR 5. N.C. 4. FB 3. VCC 2. GND 1. Drain FSGM0565RB Figure 3. Pin Configuration (Top View) Pin Definitions Pin # Name Description 1 Drain SenseFET Drain. High-voltage power SenseFET drain connection. 2 GND Ground. This pin is the control ground and the SenseFET source. 3 VCC Power Supply. This pin is the positive supply input, which provides the internal operating current for both startup and steady-state operation. 4 FB Feedback. This pin is internally connected to the inverting input of the PWM comparator. The collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 6V, the overload protection triggers, which shuts down the FPS. 5 N.C. No Connection. 6 VSTR Startup. This pin is connected directly, or through a resistor, to the high-voltage DC link. At startup, the internal high-voltage current source supplies internal bias and charges the external capacitor connected to the VCC pin. Once VCC reaches 12V, the internal current source (ICH) is disabled. |
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