FAN6754 Fairchild Semiconductor, FAN6754 Datasheet
FAN6754
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FAN6754 Summary of contents
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... Under zero-load and FAN6754 saves PWM pulses by entering deep burst mode. This burst mode function enables the power supply to meet international power conservation requirements. FAN6754 integrates a frequency-hopping function internally to reduce EMI emission of a power supply with minimum line filters ...
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... Application Diagram Internal Block Diagram © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 Figure 1. Typical Application Figure 2. Functional Block Diagram 2 www.fairchildsemi.com ...
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... The PWM duty cycle is determined by this pin and the current-sense signal 2 FB from Pin 6. FAN6754 performs an open-loop protection (OLP); if the FB voltage is higher than a threshold voltage (around 4.6V) for more than 55ms, the controller latches off the PWM Connection ...
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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 © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 Parameter (1, 2) ＜50°C) A Human Body Model, JESD22-A114 Charged Device Model, JESD22-C101 Conditions 4 Min ...
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... Brownout Threshold AC-OFF V Brownin Threshold AC- △V AC 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 © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 Conditions Min. 15.5 8 5.5 3.5 V DD-OFF +2.5 V – 0.16V DD-ON V =20V, FB=3V Gate DD Open V =20V, FB= ...
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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 © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 (Continued) Conditions Center Frequency Hopping Range FB > FB Deviation V =11V to 22V ...
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... R Internal Resistor from RT Pin RT V RTTH1 Over-Temperature Protection Threshold Voltage V RTTH2 t D-OTP1 Over-Temperature Latch-Off Debounce t D-OTP2 © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 (Continued) Conditions V =122V, Series R=200kΩ DC =86V =366V, Series R=200kΩ DC =259V Startup Time ...
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... Electrical Characteristics V =15V and T =25°C unless otherwise noted © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 (Continued) Figure 6. Brownout Circuit Figure 7. Brownout Behavior Figure 8. V and AC Recovery DD-AC 8 www.fairchildsemi.com ...
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... Figure 13. Supply Current Drawn from HV Pin (I vs. Temperature -40 -25 - Temperature (℃ ) Figure 15. Frequency in Normal Mode (f vs. Temperature © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 4 3.5 3 2.5 2 1 110 125 Figure 10. Operation Supply Current (I ) vs. Temperature DD-ST 11 10.5 10 9.5 8 ...
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... Figure 21. Over-Temperature Protection Threshold Voltage (V ) vs. Temperature RTTH1 120 115 110 105 100 -40 -25 - Temperature (℃ ) Figure 23. Brown-in (V AC-ON © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 (Continued 110 125 -40 ) Figure 18. Delay Time of FB Pin Open-Loop Protection FB-OLP ...
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... When the V capacitor level reaches V DD current switches off. At this moment, the V only supplies the FAN6754 to keep the V auxiliary winding of the main transformer provides the operating current. Operating Current Operating current is around 1.7mA. The low operating ...
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... The HV pin can perform current limit to shrink the tolerance of OCP (Over-Current Protection) under full range of AC voltage, to linearly current limit curve as shown in Figure 25. FAN6754 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/. © 2010 Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 5.00 4.80 A 3.81 ...
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... Fairchild Semiconductor Corporation FAN6754 • Rev. 1.0.2 14 www.fairchildsemi.com ...