SG6932 Fairchild Semiconductor, SG6932 Datasheet
SG6932
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SG6932 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, SG6932 shuts off to prevent extra-high voltage on output. For the forward PWM stage, the synchronized slope compensation ensures the stability of the current loop under continuous-conduction-mode (CCM) operation ...
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... Application Diagram © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 Figure 1. Typical Application 2 www.fairchildsemi.com ...
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... Block Diagram © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 Figure 2. Function Block Diagram 3 www.fairchildsemi.com ...
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... Marking Information SG6932TP XXXXXXXXYWWV Pin Configuration © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 T: D=DIP, S=SOP P : XXXXXXXX: Wafer Lot Y: Year; WW: Week V: Assembly Location Figure 3. Top Mark VRMS IEA 3 14 IPFC IMP 12 6 ISENSE 11 FBPWM 7 10 IPWM 8 9 Figure 4. Pin Configuration (Top View) ...
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... Input AC Current. For normal operation, this input is used to provide current reference for the 16 IAC multiplier. The suggested maximum I © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 ]kHz, where kΩ. For example 360µA. ...
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... The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter T Operating Ambient Temperature A © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 Parameter <50°C) A DIP SOP Min. -40 6 Min ...
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... I Maximum Source Current FBPFC-L I Maximum Sink Current FBPFC-H UVP PFC Feedback Under-Voltage Protection VFB V Voltage Level on FBPFC to Disable OPWM OFF-FBPFC © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 Conditions V – 0.16V 15V; OPFC OPWM open DD OVP1 R =24kΩ =24kΩ ...
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... V Z-PFC (Clamp) V Output Voltage Low OL-PFC V Output Voltage High OH-PFC t Rising Time R-PFC t Falling Time F-PFC DC Maximum Duty Cycle MAX © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 (Continued) Conditions EA V =0~1. =24kΩ =20+I •0. =24kΩ =1.05V ...
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... Constant Current Output for I SS Soft-Start V Voltage of SS for 50% Maximum Duty Cycle DC-MAX-50% V Voltage of SS for 65% Maximum Duty Cycle DC-MAX-65% R Discharge Resistance D © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 (Continued) Conditions R =24kΩ =24kΩ =15V, OPWM DD Drops to 9V =△V (t /t) △ ...
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... Temperature (℃) Figure 7. Start Threshold Voltage (V vs. Temperature 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 FB Voltage (V) Figure 9. Duty Cycle vs. FB Voltage © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 11.0 10.8 10.6 10.4 10.2 10.0 9.8 9.6 9.4 9.2 9.0 -40℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃ Figure 6. Minimum Operation Voltage (V ) vs. Temperature 10 ...
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... Temperature (℃) Figure 13. Rising Time vs. Temperature 3.05 3.04 3.03 3.02 3.01 3.00 2.99 2.98 2.97 2.96 2.95 -40℃ -25℃ -10℃ 5℃ 20℃ 35℃ Temperature (℃) Figure 15. Reference Voltage vs. Temperature © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 (Continued) 68.0 67.5 67.0 66.5 66.0 65.5 65.0 64.5 64.0 63.5 63.0 62.5 62.0 50℃ 65℃ 80℃ 95℃ 110℃ 125℃ 100.0 90.0 80.0 70.0 60.0 50 ...
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... Temperature (℃) Figure 21. PWM Open-Loop Protection Delay Time vs. Temperature Figure 23. Peak Current Limit Threshold Voltage vs. Temperature © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 (Continued) 120.0 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 50℃ 65℃ 80℃ 95℃ ...
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... PFC loop; in which the overshoot and undershoot of the PFC voltage are clamped. If the feedback loop; is broken, the SG6932 shuts off PFC to prevent extra- high voltage on output. For the forward PWM, the synchronized slope compensation ensures the stability of the current loop under continuous-mode operation ...
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... Figure 28 shows the block diagram of the multi-vector error amplifier. When the variation of the feedback voltage exceeds ±5% of the reference voltage, the transconductance error amplifier adjusts its output impedance to increase the loop response opened, SG6932 shuts off immediately to prevent extra-high voltage on the output capacitor. S (4) and ...
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... V the over-voltage threshold. RI Pin Open / Short Protection. The RI pin is used to set the switching frequency and internal current reference. The PFC and PWM stages of SG6932 are disabled whenever the RI pin is short or open. 15 cycle. The positively sloped ramp is s-comp 0 ...
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... PCB Layout SG6932 has a single ground pin, which prevents high sink currents in the output being returned separately. Good high-frequency or RF layout practices should be followed. Avoid long PCB traces and component leads. Locate decoupling capacitors near the SG6932. A resistor (5 ~ 20Ω) is recommended, connected in series from the output to the gate of the MOSFET ...
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... Reference Circuit © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 Figure 33. Reference Circuit 17 www.fairchildsemi.com ...
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... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 A 19.68 18. ...
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... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ © 2007 Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 Figure 35. 16-Pin Small Outline Package (SOIC) 19 www.fairchildsemi.com ...
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... Fairchild Semiconductor Corporation SG6932 • Rev. 1.1.3 20 www.fairchildsemi.com ...