MC44603P ON Semiconductor, MC44603P Datasheet
MC44603P
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MC44603P Summary of contents
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MC44603A Enhanced Mixed Frequency Mode GreenLinet PWM Controller: Fixed Frequency, Variable Frequency, Standby Mode The MC44603A is an enhanced high performance controller that is specifically designed for off−line and dc−to−dc converter applications. This device has the unique ability of automatically ...
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... Low dV/dT for Low EMI Radiations *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. http://onsemi.com 2 ...
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MAXIMUM RATINGS Rating Total Power Supply and Zener Current Supply Voltage with Respect to Ground (Pin 4) Output Current (Note 1) Source Sink Output Energy (Capacitive Load per Cycle Soft−Start Inputs F Stby ...
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ELECTRICAL CHARACTERISTICS 25°C, for min/max values T = −25° to +85°C (Note 3), unless otherwise noted.) A Characteristic OUTPUT SECTION Output Voltage (Note 4) Low State (I = 100 mA) Sink Low State (I = 500 mA) Sink High State ...
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ELECTRICAL CHARACTERISTICS (continued) (V 25°C, for min/max values T = −25° to +85°C (Note 3), unless otherwise noted.) A Characteristic OSCILLATOR AND SYNCHRONIZATION SECTION Oscillator Voltage Swing (Peak−to−Peak) Ratio Charge Current/Reference Current T = 0° to +70° 2.0 ...
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ELECTRICAL CHARACTERISTICS (continued) (V 25°C, for min/max values T = −25° to +85°C (Note 3), unless otherwise noted.) A Characteristic SOFT−START SECTION (Note 10) Duty Cycle ( kW) soft−start Duty Cycle (V = 0.1 V) soft−start (Pin 11) ...
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Negative R Q Active S Clamp Demag Detect 3.7 V Sync Input V 9 ref + 0.4 I 0.7 V ref 1 3.6 V ...
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C = 100 500 1000 2200 100 Oscillator Frequency (Hz) OSC Figure 2. Timing Resistor versus Oscillator Frequency ...
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T , AMBIENT TEMPERATURE (°C) A Figure 8. Oscillator Discharge Current versus Temperature 2.0 Sink Saturation (Load 1.6 CC 1.2 0 ...
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T , AMBIENT TEMPERATURE (°C) A Figure 14. Current Sense Gain versus Temperature 140 120 100 80 -50 - AMBIENT TEMPERATURE (°C) A Figure 16. ...
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T , AMBIENT TEMPERATURE (°C) A Figure 20. Startup Threshold Voltage versus Temperature 8.0 7.8 7.6 7.4 7.2 7.0 6.8 -50 - AMBIENT TEMPERATURE (°C) A ...
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T , AMBIENT TEMPERATURE (°C) A Figure 26. Standby Reference Current versus Temperature PIN FUNCTION DESCRIPTION Pin Name 1 V This pin is the positive supply of ...
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No-Take Over Startup Restart prot V stup-th V disable1 V disable2 V ref UVLO1 V Pin 11 (Soft-Start) V OVP Out Output Ï Ï Ï Ï Ï Ï Ï Ï Ï Ï Ï Ï Ï Ï ...
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stup-th V disable1 V disable2 V ref UVLO1 V Pin 11 (Soft-Start) Output (Pin 0.3 mA Figure 30. Switching Off Behavior Stby V Demag Out V OSC ...
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V ref V + 1.6 V CSS V 3 low 1 OSC Output (Pin 3) Error Amplifier A fully compensated Error Amplifier with access to the inverting input and output is provided. It features ...
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Thus, the error signal controls the peak inductor current on a cycle−by−cycle basis. The Current Sense Comparator PWM Latch ensures that only a single pulse appears at the Source Output during the appropriate oscillator cycle. The inductor current ...
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Consequently charge T charge DV/I discharge T discharge where the oscillator charge time charge DV is the oscillator peak−to−peak value I is the oscillator charge current charge and T ...
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ICL + AC Line R startup V CC MC44603A Figure 40. Power Losses in a Classical Flyback Structure In a classical flyback (as depicted in Figure 40), the standby losses mainly consist of the energy waste due ...
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In order to prevent undesired mode switching when power is close to the threshold value, a hysteresis that is proportional incorporated creating a second R P Stby V threshold level that is equal to [2 ...
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V out V O Nominal New Startup Sequence Initiated disable2 Figure 46. Foldback Characteristic NOTE: Foldback is disabled by connecting Pin Overvoltage Protection The overvoltage arrangement consists of a comparator that compares the Pin ...
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Undervoltage Lockout Section R F Stby V ref enable startup Voltage and Current Startup disable2 7 UVLO1 UVLO1 (to Soft-Start) V disable1 9.0 V Figure 48. V ...
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VAC to 270 VAC RFI Filter R1 1.0/5 ... C7 1.0 nF/1000 V D1 ... D4 1N4007 R2 68 k/2.0 W Sync C16 C8 2.2 nF 100 1 C15 C10 ...
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W Input Power Fly−Back Converter 185 V − 270 V Mains Range MC44603AP & MTP6N60E Tests Line Regulation 150 V 130 V 114 V 7.0 V Load Regulation 150 V Cross Regulation 150 V Efficiency Standby Mode P input ...
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... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...