ML4819CP_NL Fairchild Semiconductor, ML4819CP_NL Datasheet
ML4819CP_NL
Specifications of ML4819CP_NL
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ML4819CP_NL Summary of contents
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Power Factor and PWM Controller “Combo” GENERAL DESCRIPTION The ML4819 is a complete boost mode Power factor Controller (PFC) which also contains a PWM controller. The PFC circuit is similar to the ML4812 while the PWM controller can be used ...
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ML4819 PIN CONFIGURATION PIN DESCRIPTION PIN NAME FUNCTION Input form the PFC current sense SENSE transformer to the PWM comparator (+). Current Limit occurs when this point reaches 5V. 2 OVP Input to Over-Voltage comparator ...
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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. Supply Voltage (V ) ................................................. 35V CC Output Current, ...
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ML4819 ELECTRICAL CHARACTERISTICS PARAMETER ERROR AMPLIFIER (continued) Output High voltage Output Low Voltage Unity Gain Bandwidth GAIN MODULATOR I Input Voltage SINE Output Current (GM OUT) Bandwidth PSRR SLOPE COMPENSATION CIRCUIT RAMP COMP Voltage ...
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ELECTRICAL CHARACTERISTICS PARAMETER UNDER-VOLTAGE LOCKOUT Start-Up Threshold Shut-Down Threshold V Good Threshold REF SUPPLY Supply Current Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions. Note raised above the Start-Up Threshold ...
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ML4819 15V 100 f , OSCILLATOR FREQUENCY (kHz) OSC MAX DUTY CYCLE Figure 2. Oscillator Timing Resistance vs. Frequency 0 SOURCE SATURATION ...
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SLOPE COMPENSATION Slope compensation is accomplished by adding 1/2 of the current flowing out of pin 12 to pin 1 (for the PFC section and pin 9 (for the PWM section). The amount of slope compensation is equal to (I ...
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ML4819 0 –4.0 –8.0 –12 –16 –20 – REFERENCE SOURCE CURRENT (mA) REF Figure 11. Reference Load Regulation APPLICATIONS POWER FACTOR SECTION The power factor section in the ML4819 is similar to the power ...
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Figure 12. Typical Application, 180W Power Factor Corrected 12V Output Power Supply REV. 1.0 10/10/2000 ML4819 9 ...
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ML4819 then 100mA LDRY Step 3: The value of the inductance can now be found using previously calculated data INDRY ON MAX ( ) DRY ( ) OSC ...
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The value of R (pin 3) depends on the selection (pin 6). V 260 1 414 . IN MAX PEAK ( ) SINE PEAK ( ) ...
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ML4819 OVERVOLTAGE PROTECTION (OVP) COMPONENTS The OVP loop should be set so that there is no interaction with the voltage control loop. Typically it should be set to a level where the power components are safe to operate. Ten to ...
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OSC OSC SLOPE COMP. I RSC 2 + DUTY CYCLE – I LIM + – SENSE – 0. PWM B – Figure 15. Voltage Mode Configuration CONSTRUCTION AND LAYOUT TIPS High frequency power circuits require special ...
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ML4819 Reference Description C1, C3 0.6 F, 630V Film (250 VAC) C2 330 F 25V Electrolytic C4 6800pF 1KV Ceramic C5, C6 1000pF 35V C8, C11, C13, C15, C16 1 F Ceramic C9, C20, C21 0.1 F ...
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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 ...