MC44605P ON Semiconductor, MC44605P Datasheet
MC44605P
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MC44605P Summary of contents
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... Detection Current Sense Input 7 Demagnetization 8 Detection Input (Top View) *Winding Short Circuit Detection ORDERING INFORMATION Device Package MC44605PG PDIP−16 (Pb−Free) 1 MARKING DIAGRAM 16 MC44605P AWLYYWWG ref 15 WSCD* Program 14 Voltage Feedback Input Error Amp Output 13 12 Disabling Block (C ) ext 11 Soft-Start Input 10 Osc Capacitor (C ...
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Demagnetization Demagnetization Detection Input 8 Management V DT Output Synchronization 9 and EHTOVP Input Sf W.S.C.D* Comparator E.H.T.OVP Block WSCD C ext Disabling 12 Block Dis out V ref + Error Voltage AMP 14 ...
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MAXIMUM RATINGS Rating Total Power Supply and Zener Current Output Supply Voltage with Respect to Ground Output Current Source Sink Output Energy (Capacitive Load per Cycle) Soft−Start Current Sense, Voltage Feedback, E/A Output, C E.H.T.OVP, Sync Input Current Source Sink ...
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ELECTRICAL CHARACTERISTICS min/max values T = −25° to +85°C unless otherwise noted.) (Note 4) A Characteristic ERROR AMPLIFIER SECTION Voltage Feedback Input (V = 2.5 V) E/A out Input Bias Current ( Open Loop Voltage Gain ...
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ELECTRICAL CHARACTERISTICS min/max values T = −25° to +85°C unless otherwise noted.) (Note 5) A Characteristic REFERENCE SECTION Reference Output Voltage ( Reference Current Range ( ref ref ref Reference ...
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ELECTRICAL CHARACTERISTICS min/max values T = −25° to +85°C unless otherwise noted.) (Note 14) A Characteristic DISABLING BLOCK SECTION Delay Pulse Width Ratio (EHTOVP and WSCD Disabling Capacitor Charge Current)I Ratio (MPL and OHD Disabling Capacitor Charge Current)I Minimum V ...
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Pin Name Output 4 GND 5 Maximum Power Limitation 6 Over−Heating Detection 7 Current Sense Input 8 Demagnetization Detection 9 Synchronization and E.H.T.OVP Input 10 Oscillator Capacitor Soft−Start 12 C ...
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The following table consists of equations enabling to dimension a multisynchronized SMPS operating in discontinuous mode. Pout max Pin max + η 2 ·Vac NVo min 2 ·Vac )NVo min Lp max + 2 Pin max fsync max 2 Pin ...
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The Error Amp Output (Pin 13) is provided for external loop compensation. The output voltage is offset by two diodes drops ([1.4 V) and divided by three before it connects to the inverting input of the Current Sense Comparator. This ...
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V (maximum value of V disable 1 hysteresis is 4 13.6 V]. stup−th min The large hysteresis and the low startup current of the MC44605 make it ideally suited for off−line converter applications where ...
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Inductor current V DT Oscillator V int Sf Output Synchro input Inductor current V DT Oscillator V int Sf Output a − Free mode b − Synchronized mode Figure 5b. Oscillator Behavior http://onsemi.com 11 ...
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In effect, the output of the latch L1 is: — high during the oscillator capacitor charge and during the REGUL phase — low for the oscillator capacitor discharge Now, the latch L2 is set when the L1 output is high ...
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V Synchro. CC Signal Negative Active Clamping System Pin 9 R −200 mV Figure 6. Synchronization Demagnetization Section This block is incorporated to detect the complete core demagnetization in order to prevent the power MOSFET from switching on if the ...
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V ref τ Delay 5 Out 2 Enable In C OVLO 2 ref the Output is Disabled) Figure 9. Overvoltage Protection A delay (2 ms) is incorporated in ...
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V )/R (Vin x dt/L CS shift Figure 12. Overcurrent in a WSCD Case Now, in normal working, this overcurrent DIpk is equal to: DIpk + Vin δ where: ...
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Vcs + R Ipk S So Γ MPL MPL V + MPL comparator is used to compare V MPL of which, Dis , is connected to the “definitive inhibition MPL latch” of the disabling ...
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Consequently, by replacing V OHD value) in the last equation, the value R deducted: 2.5 R ref R + OHD Γ OHD S where are the maximum on time losses on max acceptable. Disabling Block ...
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Vac to 264 Vac RFI R1 Filter ... D4 1N4007 47 kW/2W SYNC 3 470 1N4148 kW 13 ...
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Input Voltage Synchronization Range Outputs Measured Efficiency (Pout = 64 W) Standby Losses (No Load − Pout = 0) EHTovp Threshold Maximum Power Limitation Overheating Detection (Pout = 64 W): The input rms levels at which the circuit detects an ...
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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− ...