FAN6754A Fairchild Semiconductor, FAN6754A Datasheet
FAN6754A
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FAN6754A Summary of contents
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... When V OVP or OTP are activated, an internal latch DD circuit is used to latch-off the controller. The latch mode is reset when the V supply is removed. DD FAN6754A is available in an 8-pin SOP package. Related Resources Evaluation Board: FEBFAN6754AMR_CP450v1 Package 8-Pin, Small Outline Package (SOP) April 2012 green-mode ...
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... HV 4 Line Voltage Sample Circuit HV Startup VDD 7 UVLO 17V/10V V DD-OVP 1.05V 0.7V © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 Figure 1. Typical Application OVP Latch OTP Protection OLP for ML Brownout Protection V Adjustment Limit OSC S Q Internal BIAS R Soft-Start Comparator Green ...
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... Feedback. The output voltage feedback information from the external compensation circuit is fed into this pin. The PWM duty cycle is determined by this pin and the current-sense signal from Pin FAN6754A performs open-loop protection (OLP); if the FB voltage is higher than a threshold voltage (around 4.6V) for more than 56ms, the controller latches off the PWM Connection High-Voltage Startup. This pin is connected to the line input via a 1N4007 and 200kΩ ...
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... Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter T Operating Ambient Temperature Startup Resistor HV © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 Parameter (1,2) ＜50°C) A Human Body Model; JESD22-A114 Charged Device Model; JESD22-C101 Min. -40 ...
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... Brownout Threshold AC-OFF V Brownin Threshold AC-ON Δ AC-ON AC-OFF t Line Voltage Sample Cycle S-CYCLE t Line Voltage Hold Period H-TIME t PWM Turn-off Debounce Time D-AC-OFF © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 Conditions Min 5.5 3.5 V DD-OFF +2.8 V – 0.16V DD-ON V =20V, FB=3V Gate DD Open V =20V, FB= ...
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... V IN-ON V IN-OFF V IN Gate © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 Figure 5. Brownout Circuit Gate start Brownout debounce time Figure 6. Brownout Behavior Figure 7. V and AC Recovery DD-AC 6 Gate stop www.fairchildsemi.com ...
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... Green-Mode Ending FB Voltage FB Threshold Voltage for Zero-Duty Recovery FB-ZDCR V FB Threshold Voltage for Zero-Duty FB-ZDC PWM Frequency f OSC f OSC-G V FB-ZDC © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 (Continued) Conditions Center Frequency Hopping Range FB > FB Deviation V =11V to 22V ...
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... Output Current from RT Pin RT V RTTH1 Over-Temperature Protection Threshold Voltage V RTTH2 t D-OTP1 Over-Temperature Latch-Off Debounce t D-OTP2 Note: 4. Guaranteed by design. © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 (Continued) Conditions V =122V, Series R=200kΩ DC =86V =366V, Series R=200kΩ DC =259V <0.05V SENSE ...
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... Typical Performance Characteristics Figure 9. Startup Current (I Figure 11. Start Threshold Voltage (V vs. Temperature Figure 13. Supply Current Drawn from HV Pin (I vs. Temperature Figure 15. Frequency in Normal Mode (f vs. Temperature © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 Figure 10. ) vs. Temperature DD-ST ) Figure 12. Minimum Operating Voltage (V DD-ON ) Figure 14 Figure 16 ...
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... Over-Voltage Protection (V DD vs. Temperature Figure 21. Over-Temperature Protection Threshold Voltage (V ) vs. Temperature RTTH1 Figure 23. Brownin (V AC-ON © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 (Continued) ) Figure 18. Delay Time of FB Pin Open-Loop FB-OLP Protection (t ) Figure 20. Output Current from RT Pin (I DD-OVP Figure 22. Over-Temperature Protection Threshold ) vs ...
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... When internal update time is met, this peak value is used for brownout and current-limit level judgment. Equation 1 and 2 calculate the level of brownin or brownout converted to RMS value. For power saving, FAN6754A enlarges the sampling cycle to lower the power loss from HV sampling at light-load condition ...
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... The HV pin can perform current limit to shrink the tolerance of Over-Current Protection (OCP) under full range of AC voltage, to linearly current limit curve, as shown in Figure 25. FAN6754A also shrinks the V 2 level by half to lower the I R SENSE heavy-load efficiency. 0.47 0.46 0.45 0.44 0.43 0.42 0.41 0.4 0.39 0.38 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 DC Voltage on HV Pin (V) Figure 25 ...
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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/. © 2011 Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 5.00 4.80 A 3.81 ...
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... Fairchild Semiconductor Corporation FAN6754A • Rev. 1.0.3 14 www.fairchildsemi.com ...