FAN6747 Fairchild Semiconductor, FAN6747 Datasheet
FAN6747
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FAN6747 Summary of contents
Page 1
... Green-mode function enables the power supply to meet international power conservation requirements. The FAN6747 is especially designed for SMPS with peak-current output. It incorporates a cycle-by-cycle current limiting and two-level Over-Current-Protection (OCP) that can handle peak load with a debounce time. ...
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... Line Voltage Sample Circuit HV Startup 7 VDD UVLO 17V/10V V DD-OVP V DD-SCP 1.05V 0.7V © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 Figure 1. Typical Application Auto SCP Restart OVP Protection OCP Brownout Protection V Adjustment limit Internal BIAS Debounce OVP Soft-Start Circuit ...
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... The operating current is lower than 2mA. Gate Driver Output. The totem-pole output driver for the power MOSFET internally 8 GATE clamped below 14V. © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 : Fairchild Logo Z: Plant Code X: Year Code ...
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... Absolute Maximum Ratings. Symbol Parameter T Operating Ambient Temperature A V Input Voltage to HV Pin Startup Resistor HV © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 Parameter <50°C) A Human Body Model, JESD22-A114 Charge Device Model, JESD22-C101 Conditions Min. 4 Min. Max. 30 640 -0 ...
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... I DD-OP2 PWM Stop Threshold Voltage on VDD Pin V for V Over-Voltage Protection DD-OVP DD (Latch-Off OVP Debounce Time D-OVP DD © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 Conditions for HV DD After Trigger OCP/ SCP/ OVP/ OTP > FBO V = – 0.16V ...
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... Line Voltage Sample cycle S-CYCLE t Line Voltage Sample Period S-TIME t PWM Turn-Off Debounce Time D_VIN-OFF © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 Conditions V =120V Source Series R=200k to HV Pin DC Source Series R=200k to HV Pin DC Source Series - V ...
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... JTR-3 f Green-Mode Minimum Frequency OSC-G FB Threshold Voltage for V FB-N Frequency Reduction Beginning FB Threshold Voltage for Turn- V Off Jitter and Frequency FB-G Reduction Destination © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 Conditions Min. Figure 8. Brownout Behavior Figure 9. V and AC Recovery DD-AC Center Frequency (V > FB-N V > ...
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... A V Attenuation Z Input Impedance Pin Open Voltage FBO FB Open-Loop Protection V FB-OLP Threshold Voltage t Open-Loop Protection Debounce D-OLP © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 Conditions Min. 1.6 1.5 OZ- =12V to 22V DD T =-40 to 105°C A Figure 10. PWM Frequency Figure 11. Burst-Mode Diagram V < ...
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... OFF Over-Temperature Latch-Off t D_OTP-LATCH Debounce V Second Threshold Voltage for OTP2-LATCH- Over-Temperature Protection OFF Second Over-Temperature t D_OTP2-LATCH Latch-Off Debounce © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 Conditions Min. 230 V =122V, Series DC 0.790 R=200kΩ =366V, Series DC 0.690 R=200kΩ ...
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... Figure 16. Supply Current Drawn from HV Pin (I vs. Temperature -40 -25 - Temperature (℃ ) Figure 18. Frequency in Normal Mode (f vs. Temperature © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 2.6 2.4 2.2 2 1.8 1.6 1.4 1 110 125 Figure 13. Operation Supply Current (I ) vs. Temperature DD-ST 11 10.5 10 9.5 8 ...
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... Temperature (℃ ) Figure 26. Brown-In (V IN-ON © 2010 Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 300 285 270 255 240 225 210 195 180 165 150 110 125 ) Figure 21. Debounce Time of FB Pin Open-Loop ...
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... Equations 1 and 2 can be used to calculate out the level of brown-in or brownout converted to RMS value. For power saving, FAN6747 enlarges the sampling cycle to lower the power loss from HV sampling at light-load condition ...
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... internal circuitry. As high ambient temperatures occur, R When V PWM turns off after under 0.7V, is used for fast shut down of FAN6747 DD after a short time. If the RT pin is not connected to the . This delay introduces PD NTC resistor for over temperature protection • ...
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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 FAN6747 • Rev. 1.0.3 5.00 4.80 A 3.81 ...
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... Fairchild Semiconductor Corporation FAN6747 • Rev. 1.0.3 15 www.fairchildsemi.com ...