ML4824CP-1 Micro Linear, ML4824CP-1 Datasheet
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ML4824CP-1
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ML4824CP-1 Summary of contents
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Power Factor Correction and PWM Controller Combo GENERAL DESCRIPTION The ML4824 is a controller for power factor corrected, switched mode power supplies. Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and ...
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ML4824 PIN CONFIGURATION PIN DESCRIPTION PIN NAME FUNCTION 1 IEAO PFC transconductance current error amplifier output 2 I PFC gain control reference input Current sense input to the PFC current SENSE limit comparator 4 V Input for ...
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ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. V Shunt Regulator Current .................................. 55mA CC I Voltage ...
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ML4824 ELECTRICAL CHARACTERISTICS SMBOL PARAMETER OVP COMPARATOR Threshold Voltage Hysteresis PFC I COMPARATOR LIMIT Threshold Voltage (PFC Gain Modulator Output) LIMIT TH Delay to Output DC I COMPARATOR LIMIT Threshold Voltage Input Bias Current Delay to Output ...
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ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER PFC Minimum Duty Cycle Maximum Duty Cycle Output Low Voltage Output High Voltage Rise/Fall Time PWM Duty Cycle Range Output Low Voltage Output High Voltage Rise/Fall Time SUPPLY Shunt Regulator Voltage (V CCZ V Load Regulation ...
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ML4824 TYPICAL PERFORMANCE CHARACTERISTICS 250 200 150 100 (V) Voltage Error Amplifier (VEA) Transconductance (g 16 VEAO V FB VEA IEA 3.5k 15 – + 2.5V + – GAIN ...
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FUNCTIONAL DESCRIPTION The ML4824 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 voltage ...
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ML4824 FUNCTIONAL DESCRIPTION 3) The output of the voltage error amplifier, VEAO. The 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 ...
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FUNCTIONAL DESCRIPTION open-loop crossover frequency should be 1/2 that of the line frequency, or 23Hz for a 47Hz line (lowest anticipated international power frequency). The gain vs. input voltage of the ML4824’s voltage error amplifier has a specially shaped nonlinearity ...
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ML4824 FUNCTIONAL DESCRIPTION No voltage error amplifier is included in the PWM stage of the ML4824, as this function is generally performed on the output side of the PWM’s isolation boundary. To facilitate the design of optocoupler feedback circuitry, an ...
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LEADING/TRAILING MODULATION Conventional Pulse Width Modulation (PWM) techniques employ trailing edge modulation in which the switch will turn on right after the trailing edge of the system clock. The error amplifier output voltage is then compared with the modulating ramp. ...
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ML4824 VIN – REF RAMP OSC CLK U4 12 SW2 SW1 C1 VEAO DFF CMP + R Q – CLK Figure 5. Typical Leading Edge ...
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... R5 V RMS 300m C19 6 1µ RAMP 1 8 RAMP 2 C18 470pF C11 10nF Figure 6. 100W Power Factor Corrected Power Supply, Designed Using Micro Linear Application Note 33 3.1mH 8A, 600V 10nF 100µF C25 100nF T1 R21 R15 22 3 C20 R28 1µ ...
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ML4824 PHYSICAL DIMENSIONS 16 PIN 0.02 MIN (0.50 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) 14 inches (millimeters) Package: P16 16-Pin PDIP 0.740 - 0.760 (18.79 - 19.31) 0.240 - 0.260 (6.09 - ...
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PHYSICAL DIMENSIONS 0.400 - 0.414 (10.16 - 10.52) 16 PIN 0.024 - 0.034 (0.61 - 0.86) (4 PLACES) 0.012 - 0.020 0.090 - 0.094 (0.30 - 0.51) (2.28 - 2.39) inches (millimeters) Package: S16W 16-Pin Wide SOIC ...
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... ML4824 ORDERING INFORMATION PART NUMBER ML4824CP-1 ML4824CP-2 ML4824CS-1 ML4824CS-2 ML4824IP-1 ML4824IP-2 ML4824IS-1 ML4824IS-2 © Micro Linear 1998 registered trademark of Micro Linear Corporation. All other trademarks are the property of their respective owners. Products described herein may be covered by one or more of the following U.S. patents: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; ...