FAN4800_06 FAIRCHILD [Fairchild Semiconductor], FAN4800_06 Datasheet
FAN4800_06
Related parts for FAN4800_06
FAN4800_06 Summary of contents
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FAN4800 Low Start-Up Current PFC/PWM Controller Combos Features Low start-up current (100µA typical) Low operating current (2.5mA typical) Low total harmonic distortion, high power factor Pin-compatible upgrade for the ML4800 Average current, continuous or discontinuous boost, leading-edge PFC Slew rate ...
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Block Diagram 16 V EAO 0.3V 2.5V 3. GAIN V RMS MODULATOR 4 I SENSE 3 RAMP1 7 RAMP2 350 8 0. 20μA SS 350 5 V REF DC ...
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Pin Configuration Pin Definitions Pin # Name 1 I EAO SENSE 4 V RMS RAMP1 7 (RtCt) RAMP2 8 (PWM RAMP LIMIT 10 GND 11 PWM OUT ...
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Absolute Maximum Ratings The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not ...
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Electrical Characteristics Unless otherwise stated, these specifications apply: V Symbol Parameter VOLTAGE ERROR AMPLIFIER V Input Voltage Range FB gm1 Transconductance V (PFC) Feedback Reference Voltage ref Input Bias Current b EAO V (H) Output High-Voltage EAO ...
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Electrical Characteristics Unless otherwise stated, these specifications apply: V Symbol Parameter PFC I COMPARATOR LIMIT V Threshold Voltage th(cs) (PFC I V LIMIT th(cs) gm Output) (1) t Delay to Output d(pfc_off COMPARATOR LIMIT V ...
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Electrical Characteristics Unless otherwise stated, these specifications apply: V Symbol Parameter PFC D Minimum Duty Cycle min. D Maximum Duty Cycle max. R (low)1 ON Output Low R dson R (low)2 ON Vol1 Output Low Voltage R (high)1 ON Output ...
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Typical Performance Characteristics 126 119 112 105 2.0 2.1 2.2 2.3 2.4 2.5 V (V) FB Figure 3. Voltage Error Amplifier (gmv) Transconductance 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0.0 ...
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Functional Description The FAN4800 consists of an average current controlled, continuous boost Power Factor Correction (PFC) front end and a synchronized Pulse Width Modulator (PWM) back end. The PWM can be used in either current or voltage mode. In voltage ...
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The output of the voltage error amplifier, V gain modulator responds linearly to variations in this voltage. The output of the gain modulator is a current signal, in the form of a full wave rectified sinusoid at twice the ...
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V EAO 0.3V 2.5V 3. GAIN V RMS MODULATOR 4 I SENSE 3 RAMP1 7 1.6 Error Amplifier Compensation The PWM loading of the PFC can be modeled as a neg- ative resistor ...
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Z : Compensation network for the current loop Transconductance PFC boost output voltage (typical designed OUTDC value is 380V). The equation uses the worst- case condition to calculate the Z R ...
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Example For the application circuit shown in Figures 12 and 13, with the oscillator running at 100kHz OSC t solving for yields 1. 51.1kΩ, selecting standard components ...
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Generating V CC After turning on the FAN4800 at 13V, the operating volt- age can vary from 10V to 17.9V. The threshold voltage of the V OVP comparator is 17.9V and its hysteresis is CC 1.5V. When V reaches ...
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SW2 VIN DC SW1 REF U3 VEAO EA RAMP OSC CLK U4 SW2 VIN DC SW1 U3 VEAO EA REF RAMP OSC CLK U4 © 2005 Fairchild Semiconductor Corporation FAN4800 Rev. 1.0 ...
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Typical Application Circuit © 2005 Fairchild Semiconductor Corporation FAN4800 Rev. 1.0.5 Figure 12. Current-Mode Application 16 www.fairchildsemi.com ...
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Typical Application Circuit © 2005 Fairchild Semiconductor Corporation FAN4800 Rev. 1.0.5 (Continued) Figure 13. Voltage-Mode Application 17 www.fairchildsemi.com ...
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Package Dimensions 16-Pin DIP Dimensions are in inches (millimeters) unless otherwise specified. Figure 14. 16-Lead Plastic Dual In-Line Package (DIP) © 2005 Fairchild Semiconductor Corporation FAN4800 Rev. 1.0.5 18 www.fairchildsemi.com ...
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Package Dimensions (Continued) 16-Pin SOIC (Wide) Dimensions are in inches (millimeters) unless otherwise specified. Figure 15. 16-Lead Small Outline Integrated Circuit (SOIC) © 2005 Fairchild Semiconductor Corporation FAN4800 Rev. 1.0.5 19 www.fairchildsemi.com ...
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TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ACEx GlobalOptoisolator ActiveArray GTO Bottomless HiSeC 2 Build it Now I ...