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FSFR19003 Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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FSFR19003 Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 16 page © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSFR2100 • 1.0.0 3 Pin Assignments 1 2 3 4 5 6 7 8 9 10 V DL CON R T CS SG PG LVcc HVcc V CTR Figure 3. Package Diagram Pin Definitions Pin # Name Description 1 VDL This pin is the drain of the high-side MOSFET. It is typically connected to the input DC link voltage. 2 CON This pin is for enable/disable and protection. When the voltage of this pin is above 0.6V, the IC operation is enabled. When the voltage of this pin drops below 0.4V, gate drive signals for both MOSFETs are disabled. When the voltage of this pin increases above 5V, protection is triggered. 3 RT This pin programs the switching frequency. Typically, an opto-coupler is connected to control the switching frequency for the output voltage regulation. 4 CS This pin senses the current flowing through the low-side MOSFET. Typically, negative voltage is applied on this pin. 5 SG This pin is the control ground. 6 PG This pin is the power ground. This pin is connected to the source of the low-side MOSFET. 7 LVcc This pin is the supply voltage of the control IC. 8 NC No connection. 9 HVcc This pin is the supply voltage of the high-side drive circuit IC. 10 VCTR This pin is the drain of the low-side MOSFET. Typically, a transformer is connected to this pin. |
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