SG6961 Fairchild Semiconductor, SG6961 Datasheet
SG6961
Available stocks
Related parts for SG6961
SG6961 Summary of contents
Page 1
... VAC © System General Corp. Version 1.3.1 (IRO33.0028.B6) DESCRIPTION The SG6961 is an 8-pin boundary mode PFC controller IC intended for controlling PFC pre-regulators. The SG6961 provides a controlled on-time to regulate the output DC voltage and achieve natural power factor correction. The maximum on-time of the external switch is programmable to ensure safe operation during AC brownouts ...
Page 2
... VCC Driver and control circuit supply voltage. © System General Corp. Version 1.3.1 (IRO33.0028.B6) PIN CONFIGURATION Z=Lead Free + ROHS INV Compatible Null=regular package COMP MOT CS Package 8-Pin SOP 8-Pin DIP - 2 - Product Specification SG6961 VCC GD GND ZCD www.sg.com.tw • www.fairchildsemi.com September 24, 2007 ...
Page 3
... Power Factor Controller www.DataSheet4U.com BLOCK DIAGRAM © System General Corp. Version 1.3.1 (IRO33.0028.B6) Product Specification - 3 - www.sg.com.tw • www.fairchildsemi.com SG6961 September 24, 2007 ...
Page 4
... A 2.65 2.22 2.30 4.8 1.15 1.35 2.75 0.40 0.45 V =2.35V, V =1. INV COMP V =1.5V 450 800 INV V =2.65V INV COMP - 4 - www.sg.com.tw • www.fairchildsemi.com SG6961 Unit °C/W °C °C ° Max. Unit 10 µA 6 µs Max. Unit 2.55 V 150 µmho 2.70 ...
Page 5
... ZCD V =5V, F =60KHz COMP SW Output Turned Off by ZCD 300 =24kΩ MOT R =24kΩ, ZCD=100mV 800 MOT Test Condition R =24kΩ, V =0, MOT CS V =5V COMP - 5 - Product Specification SG6961 Min. Typ. Max. Unit 0.77 0.82 0.87 V 200 ns 400 550 ns Min. Typ. Max. Unit 15.5 16.5 17 ...
Page 6
... Product Specification SG6961 Temperature -25 - Temperature (℃) -25 - Temperature (℃) Start_Up Current (Icc_st) vs Temperature -25 - Temperature (℃) www.sg.com.tw • www.fairchildsemi.com ...
Page 7
... Threshold Voltage for Peak Current Limit Cycle by 0.822 0.82 0.818 0.816 0.814 0.812 0.81 0.808 110 125 - 7 - Product Specification SG6961 Temperature -40 -25 - Temperature (℃) Cycle Limit (Vpk) vs Temperature -40 -25 - Temperature (℃ ...
Page 8
... AC cycle should be very small. A multi-vector error amplifier is built in to provide fast transient response and precise output voltage clamping. For SG6961, connecting a capacitance, such as 1µF, between COMP and GND is suggested. The error amplifier is a transconductance amplifier that converts voltage to current with a 125µmho. ...
Page 9
... Slope compensation and built-in debounce circuitry alleviate this problem. Note that the SG6961 has a single ground pin; therefore, high sink current at the output cannot be returned separately. Good high-frequency or RF layout practices should be followed. Avoid long PCB traces and component leads. ...
Page 10
... Power Factor Controller www.DataSheet4U.com REFERENCE CIRCUIT: SG6961 180W BOM Component Resistor 1MΩ +/- 5% SMD 1206 Resistor 33KΩ +/- 1% SMD 1206 Resistor 0Ω +/- 1% SMD 1206 Metal-Oxide Resistor 1W-S 0Ω22 +/-5% Resistor 430KΩ +/-1% SMD 0805 Resistor 330KΩ +/-1% SMD 1206 Resistor 24KΩ +/-1% SMD 1206 Resistor 68KΩ ...
Page 11
... Diode Fairchild RHRP1560 15A 600V TO-220 Diode 1N4148 SMD ZENER Diode 1/2W 24V SMD Diode 2N7002 SMD MOSFET Infineon 16N50C3 16A 500V TO-220 © System General Corp. Version 1.3.1 (IRO33.0028.B6) Product Specification Symbol L4A MOV1 JP1,JP2,JP3,JP4,TR1 BD1 ZD1 www.sg.com.tw • www.fairchildsemi.com SG6961 September 24, 2007 ...
Page 12
... Product Specification SG6961 Θ Typ. Max. 0.210 0.130 0.135 0.060 0.018 0.365 0.400 0.300 0.250 0.255 0.100 0.130 0.150 0.355 0.375 7° ...
Page 13
... Product Specification SG6961 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 ...
Page 14
... Power Factor Controller www.DataSheet4U.com © System General Corp. Version 1.3.1 (IRO33.0028.B6) Product Specification - 14 - www.sg.com.tw • www.fairchildsemi.com SG6961 September 24, 2007 ...