SG6203 Fairchild Semiconductor, SG6203 Datasheet
SG6203
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SG6203 Summary of contents
Page 1
... System General Corp. Version 1.0.1 (IAO33.0010.B1) Product Specification DESCRIPTION The SG6203 is designed to control and drive the synchronous rectifier for the flyback converter. The synchronous signal of the primary switch is obtained by a single diode connected between the transformer secondary winding and the SG6203. Using the SG6203, no additional transformer winding is required and the circuit complexity can be minimized ...
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... MOSFET may be turned off even when the secondary rectifier is still conducting, which decreases the system efficiency. However, if the resistor is too large, the output is shut off immediately once DET gets high. In SG6203, an internal phase-locked-loop (PLL) modulates the duration of the internal one-shot signal to maintain a suitable dead time between the primary switch and the synchronous MOSFET. ...
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... Synchronous Rectifier Controller for Flyback Converter BLOCK DIAGRAM www.DataSheet4U.com © System General Corp. Version 1.0.1 (IAO33.0010.B1) Product Specification - 3 - www.sg.com.tw • www.fairchildsemi.com SG6203 September 24, 2007 ...
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... SOP8 400 mW DIP8 800 SOP8 208.4 °C/W DIP8 82.5 °C 150 °C -65 to +150 300 °C 2.0 KV 200 V Value <20 -30~85 12~36 Min. Typ. Max. 1.14 1.20 1.26 6.5 7.5 8 19.5 22.5 25.5 =24KΩ +40 +60 +80 200 1000 www.sg.com.tw • www.fairchildsemi.com September 24, 2007 SG6203 Unit V °C KΩ Unit V µs µs µ ...
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... CC T =25°C; C =5nF 150 V =12V CC Test Condition Min. Typ. V =12V, Output=open, DD DET=50KHz, 1.7 IN-=IN+=open, R =12KΩ T 6.0 4.8 5 www.sg.com.tw • www.fairchildsemi.com SG6203 Max. Unit 2.3 V 1.6 V 300 µA 300 ns Max. Unit 10 mV 110 µA 110 µA 1.5 µA 200 Max. ...
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... Temperature ( ℃ ) Threshold voltage to enable an one shot signal (V Temperature 1.842 1.840 1.838 1.836 1.834 1.832 1.830 1.828 -40 -25 - Temperature (℃) www.sg.com.tw • www.fairchildsemi.com September 24, 2007 SG6203 95 110 125 ) D_LOW 95 110 125 ) 110 125 ...
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... Synchronous Rectifier Controller for Flyback Converter Threshold voltage to enable the output (V 1.56 1.54 1.52 1.50 1.48 1.46 1.44 1.42 -40 -25 - www.DataSheet4U.com © System General Corp. Version 1.0.1 (IAO33.0010.B1 Temperature 110 125 Temperature ( ℃ Product Specification SG6203 www.sg.com.tw • www.fairchildsemi.com September 24, 2007 ...
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... If the resistor is too large, the output is © System General Corp. Version 1.0.1 (IAO33.0010.B1) shut off immediately once DET gets high. In SG6203, an internal phase locked loop modulates the duration of the internal one-shot signal to maintain a suitable dead time between the primary switch and the synchronous MOSFET ...
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... © System General Corp. Version 1.0.1 (IAO33.0010.B1) Part Number Description 0.1µF 22pF FR102 100V/1A SB1100 100V/1A 1N4148 100V/0.2A PSMN015-110P 110V/75A; 15mΩ 2.2KΩ 22Ω 47KΩ 1.8KΩ 2KΩ 0 16.2KΩ www.sg.com.tw • www.fairchildsemi.com Product Specification SG6203 September 24, 2007 ...
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... Synchronous Rectifier Controller for Flyback Converter REFERENCE CIRCUIT-B www.DataSheet4U.com © System General Corp. Version 1.0.1 (IAO33.0010.B1) Product Specification - 10 - www.sg.com.tw • www.fairchildsemi.com SG6203 September 24, 2007 ...
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... Product Specification SG6203 Typ. Max. 0.069 0.010 0.016 0.008 0.196 0.157 0.050 0.060 0.015X45 ° 0.244 0.050 8 ° www.sg.com.tw • www.fairchildsemi.com ...
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... Product Specification Θ Inch Min. Typ. Max. 0.210 0.015 0.125 0.130 0.135 0.060 0.018 0.355 0.365 0.400 0.300 0.245 0.250 0.255 0.100 0.115 0.130 0.150 0.335 0.355 0.375 0 ° 7 ° 15 ° www.sg.com.tw • www.fairchildsemi.com September 24, 2007 SG6203 ...
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... Synchronous Rectifier Controller for Flyback Converter www.DataSheet4U.com © System General Corp. Version 1.0.1 (IAO33.0010.B1) Product Specification - 13 - www.sg.com.tw • www.fairchildsemi.com SG6203 September 24, 2007 ...