ml4826cs-2 Fairchild Semiconductor, ml4826cs-2 Datasheet
ml4826cs-2
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ml4826cs-2 Summary of contents
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ML4826 PFC and Dual Output PWM Controller Combo Features • Internally synchronized PFC and PWM in one IC • Low total harmonic distortion • Low ripple current in the storage capacitor between the PFC and PWM sections • Average current, ...
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ML4826 Pin Configuration Pin Description PIN NAME 1 IEAO PFC transconductance current error amplifier output 2 I PFC gain control reference input Current sense input to the PFC current limit comparator SENSE 4 V Input for PFC ...
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PRODUCT SPECIFICATION Absolute Maximum Ratings Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum rat- ings are stress ratings only and functional device operation is not implied. Parameter V Shunt Regulator Current CC ...
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ML4826 Electrical Characteristics Unless otherwise specified 25mA Operating Temperature Range (Note 1) A Symbol Parameter Output High Voltage Output Low Voltage Source Current Sink Current Open Loop Gain Power Supply Rejection Ratio OVP Comparator ...
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PRODUCT SPECIFICATION Electrical Characteristics Unless otherwise specified 25mA Operating Temperature Range (Note 1) A Symbol Parameter Load Regulation Total Variation Long Term Stability PFC Minimum Duty Cycle Maximum Duty Cycle Output Low Voltage Output ...
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ML4826 Typical Performance Characteristics 250 200 150 100 (V) Voltage Error Amplifier (VEA) Transconductance (g Variable Gain Control Transfer Characteristic 20 IEAO VEAO V FB VEA IEA 3.5kΩ 2.5V ...
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ML4826 Functional Description The ML4826 consists of an average current controlled, continuous boost Power Factor Corrector (PFC) front end and a synchronized Pulse Width Modulator (PWM) back end. The PWM can be used in either current or voltage mode. In ...
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ML4826 The output of the gain modulator is a current signal, in the form of a full wave rectified sinusoid at twice the line frequency. This current is applied to the virtual-ground (negative) input of the current error amplifier. In ...
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PRODUCT SPECIFICATION nonlinearity such that under steady-state operating condi- tions the transconductance of the error amplifi local minimum. Rapid perturbations in line or load conditions will cause the input to the voltage error amplifier (V ate from ...
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ML4826 current transformer in the primary of the output stage, and is thereby representative of the current flowing in the con- verter’s output stage which provides cycle-by- LIMIT cycle current limiting, is typically connected to RAMP 2 ...
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PRODUCT SPECIFICATION 4 x IN4148 I T3 SENSE 200:1 x Former Figure 4. Slope Compensation and Current Sense There are a number of different ways to supply V ML4826. The method suggested in Figure 5, is one which keeps the ...
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ML4826 RECTIFIED 20V 22kΩ MJE200 Q1 PN2222 18Ω ML4826 1µF RTN Figure 5. V Bias Circuitry 39kΩ 1500µF GATE DRIVE PRODUCT SPECIFICATION V BIAS V CC 1µF ML4826 RTN Figure 6. V ...
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PRODUCT SPECIFICATION VIN DC REF OSC U4 Figure 8. Typical Trailing Edge Control Scheme VIN – REF RAMP OSC CLK U4 Figure 9. Typical Leading Edge Control Scheme. REV. 1.0.5 ...
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ML4826 Figure 10. 48V 300W Power Factor Corrected Power Supply 14 PRODUCT SPECIFICATION REV. 1.0.5 2/14/02 ...
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PRODUCT SPECIFICATION Mechanical Dimensions 20 PIN 0.060 MIN (1.52 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) REV. 1.0.5 2/14/02 inches (millimeters) Package: P20 20-Pin PDIP 1.010 - 1.035 (25.65 - 26.29) 0.240 - ...
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... NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems ...