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L6585DTR Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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L6585DTR Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 25 page May 2007 Rev 5 1/25 25 L6585D Combo IC for PFC and ballast control Features ■ Pre-heating and ignition phases independently programmable ■ Ignition voltage control ■ Transition mode PFC with over-current protection ■ Programmable and precise End-of-life protection compliant with all ballast configurations ■ Auto-adjusting half-bridge over-current control ■ Automatic re-lamp ■ 3% oscillator precision ■ 1.2µs dead time ■ PFC over-voltage protection and feedback disconnection ■ Under voltage lock-out Applications ■ Electronic ballast SO-20 www.st.com Figure 1. Block diagram E/A + _ LEB LATCH 2.5V _ 0.7V MULTIPLIER and THD OPTIMIZER STARTER S R Q Vcc UV DETECTION HVG DRIVER LEVEL SHIFTER SYNCHRONOUS BOOTSTRAP DIODE DRIVING LOGIC LVG DRIVER Vcc CONTROL LOGIC DEAD TIME 1.7V 17V PFG ZCD INV COMP MULT PFCS Vcc BOOT HSD OUT LSD GND HBCS Tch OSC EOI RF EOLR EOLP TIMING MANAGEMENT Vcc 4.6 1.5 1.9V VCO 2V 1.2V OL OL PWM COMP. CHOKE SAT. 3.4V HB STOP OVP OVP PFSTOP PFSTOP WINDOW COMPARATOR & REF. CTR 0.75V DIS DIS 4.63V EOL RELAMP 0.9V 1.6V 2V E/A + _ LEB LATCH 2.5V _ 0.7V MULTIPLIER and THD OPTIMIZER STARTER S R Q Vcc UV DETECTION HVG DRIVER LEVEL SHIFTER SYNCHRONOUS BOOTSTRAP DIODE DRIVING LOGIC LVG DRIVER Vcc CONTROL LOGIC DEAD TIME 1.7V 17V PFG ZCD INV COMP MULT PFCS Vcc BOOT HSD OUT LSD GND HBCS Tch OSC EOI RF EOLR EOLP TIMING MANAGEMENT Vcc 4.6 1.5 1.9V VCO 2V 1.2V OL OL PWM COMP. CHOKE SAT. 3.4V HB STOP OVP OVP PFSTOP PFSTOP WINDOW COMPARATOR & REF. CTR 0.75V DIS DIS 4.63V EOL RELAMP 0.9V 1.6V 2V |
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