sg6980 Fairchild Semiconductor, sg6980 Datasheet
sg6980
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sg6980 Summary of contents
Page 1
... PFC loop, in which the overshoot and undershoot of the PFC voltage are clamped. If the feedback loop is broken, SG6980 shuts off to prevent extra-high voltage on output. The PFC gate driver can be synchronized with external SYNC signal and the switching noise can be reduced ...
Page 2
... Y: Year; WW: Week V: Assembly Location ORDERING INFORMATION Part Number Pb-Free Package SG6980DZ SG6980SZ © System General Corp. Version 1.0.1 (IAO33.0064.B0 Lead Free 16-Pin DIP 16-Pin SOP - 2 - Product Specification SG6980 PIN CONFIGURATION IAC VRMS OTP VEA RI FB IEA RDY VDD IPFC IMP OUT GND ...
Page 3
... The peak current setting for PFC. This pin receives the external switching signal. The PFC switching can be synchronized by SYNC with 1:1 ratio. Active high. The SG6980 is disabled whenever the voltage at this pin is lower than 1V or the pin is open. When SG6980 is disabled by ON/OFF, the I The ground. ...
Page 4
... Single-Stage PFC Controller BLOCK DIAGRAM © System General Corp. Version 1.0.1 (IAO33.0064.B0 www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980 September 17, 2007 ...
Page 5
... RI= 24KΩ,V = 15V; Gate Open DD V <V =25V ， ON/OFF V -0.16V ＜V DD DD-ON 11.5 9 23.5 10 Test Conditions Min. RI= 24KΩ www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980 Unit 0.8 W 0.4 ℃ ℃ 36.70 ℃/W 37.76 ℃ Typ. Max. Unit µA ...
Page 6
... REF 6.5 1.5 2 0.35 0. Test Conditions Min. Typ 1 1. 3.2 RI=24KΩ (I =20+I • www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980 Max. Unit 0. RMS-UVP-1 RMS-UVP-1 V +0.22 240 ms Max. Unit 3. KΩ 1.100 • REF REF 120 mV 120 µs 1.066 • ...
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... 15V 5nF OUT = 15V 5nF OUT = Test Conditions FB=2.5V I =1mA SINK Test Conditions RI = 24KΩ www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980 Min. Typ. Max. Unit 90 100 110 µA 0.15 0.20 0.25 V 0.35 0.40 0.45 V 200 ns 250 330 430 ns Min. Typ. ...
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... Version 1.0.1 (IAO33.0064.B0) Test Conditions Min. 3.5 RI=24KΩ F OSC RI = 24KΩ 100 RI = 24KΩ RI=24KΩ 1 RI=31.2KΩ 1 Test Conditions Min www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980 Typ. Max. Unit V 0 KHz 150 KHz 200 500 ns 15.8 µs 3 µs 3 µs Typ. Max. Unit ...
Page 9
... Minimum synchronizing frequency (F 5 .00 4 .00 3 .00 2 .00 1 . Product Specification SG6980 Reference Voltage ( Temperature REF - 110 Temperature (℃ Temperature DD-OFF - ...
Page 10
... Recovery Level on OTP (V 1.4 3 1.4 1 1.3 9 1 Product Specification SG6980 ) vs FB Temperature - Temperature (℃ Temperature MO Temperature (℃ ...
Page 11
... PFC loop, in which the overshoot and undershoot of the PFC voltage are clamped. If the feedback loop is broken, the SG6980 shuts off PFC to prevent extra-high voltage on output. Programmable two-level high/low line compensation optimizes THD performance ...
Page 12
... OUT and SYNC signals. FIG.3 Synchronized Interleaving-Switching RDY Signal Section SG6980 provides a RDY pin to inform the next stage and other applications. RDY signal is high impedance when the FB voltage goes up to 2.7V and delays around 5ms. Use the pin to turn on the second stage PWM when the bulk capacitor voltage is high enough ...
Page 13
... An external NTC thermistor must be connected from this pin to ground. When the OTP voltage drops below 1.2V, SG6980 shuts down. SG6980 auto restarts when the OTP voltage is higher than 1.4V www.sg.com.tw • www.fairchildsemi.com ...
Page 14
... If the RI pin is short or open, SG6980 is off. PCB Layout SG6980 has a single ground pin. High sink currents in the output therefore cannot be returned separately. Good high-frequency or RF layout practices should be followed. Avoid long PCB traces and component leads. Locate decoupling capacitors near the SG6980. A resistor Ω ...
Page 15
... Single-Stage PFC Controller REFERENCE CIRCUIT © System General Corp. Version 1.0.1 (IAO33.0064.B0 www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980 September 17, 2007 ...
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... Product Specification SG6980 θ Typ. Max. 0.210 0.130 0.135 0.060 0.018 0.755 0.775 0.300 0.248 0.255 0.100 0.130 0.150 0.355 0.375 ° ...
Page 17
... Product Specification SG6980 Detail Detail A Typ. Max. 0.069 0.010 0.059 0.016 0.008 0.394 0.157 0.050 0.244 0.050 0.015X45 ° 0.004 8 ° ...
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... Single-Stage PFC Controller © System General Corp. Version 1.0.1 (IAO33.0064.B0 www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980 September 17, 2007 ...