L6585D STMicroelectronics, L6585D Datasheet
L6585D
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L6585D Summary of contents
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... COMPARATOR COMPARATOR EOL EOL & REF. & REF. 1.9V 1. VCO VCO EOLP EOLP RF RF OSC OSC EOI EOI Rev 5 L6585D SO-20 HVG HVG UV UV DRIVER DRIVER SYNCHRONOUS SYNCHRONOUS BOOTSTRAP DIODE BOOTSTRAP DIODE DEAD DEAD LEVEL LEVEL TIME TIME SHIFTER SHIFTER DRIVING ...
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... End of life – window comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7 Half-bridge current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 CTR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 Re–lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 11 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2/25 Pre-heating (time interval A Figure Ignition (time interval B Figure Run mode (time interval C Figure L6585D ...
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... L6585D 1 Device description Designed in High-voltage BCD Off-line technology, the L6585D embeds a PFC controller, a half-bridge controller, the relevant drivers and the logic necessary to build an electronic ballast. The advanced and precise logic circuitry, combined with the programmability of the End-of- Life windows comparator threshold, makes the L6585D compliant with either "lamp-to- ground" ...
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... OSC OSC RF RF EOI EOI TCH TCH EOLP EOLP EOL-R EOL-R CTR CTR MULT MULT COMP COMP INV INV L6585D BOOT BOOT HSD HSD OUT OUT VCC VCC LSD LSD GND GND HBCS HBCS PFG PFG PFCS PFCS ZCD ZCD ...
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... L6585D 2.2 Functions Table 1. Pin functions Pin num. Name 1 OSC EOI 4 Tch 5 EOLP 6 EOL-R 7 CTR 8 MULT An external capacitor to GND fixes the half-bridge switching frequency with a ±3% precision. Voltage reference able to source up to 240µA; the current sunk from this pin fixes the switching frequency of the half-bridge for each operating state ...
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... L6585D latches to avoid MOSFETs damaging, Ground. Current return for both the signal part of the IC and the gate driver. ...
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... L6585D 3 Electrical data 3.1 Maximum ratings Table 2. Absolute maximum ratings Symbol Pin V 20 BOOT V 18 OUT dV /dt 18 OUT 10 EOLP F OSC(MAX) P TOT 1. The device has an internal Clamping Zener between GND and the VCC pin, it must not be supplied by a Low Impedance Voltage Source. ...
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... CTR > 3.4 = 47K, unless otherwise specified RUN Min Typ Max 11 13.6 14.3 9.6 10.3 16.2 17.2 17.7 250 370 7 370 0. 0.52 COMP 2.45 2.5 2. 2.4 V -2.6 INV = 2 INV 4.2 2.25 1.2 2.1 2.25 2.4 L6585D Unit µA mA µA -1 µA V V/V 1 µA dB MHz ...
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... L6585D Table 4. Electrical characteristics (continued) Symbol Pin CTR pin Disable threshold DIS CTR Hysteresys Dynamic PFC overvoltage PFOV CTR Hysteresys Available range as tracking reference CTR PFC section – current sense comparator ICS PFCS Input bias current tLEB PFCS Leading edge blanking ...
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... CTR = 27K 2.5 = 91K = 270K or 220 = 91K 720 = 27K L6585D Unit µ 0.1 µA Ω µA Ω µ µ µs 62 KHz KHz µ ...
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... L6585D Table 4. Electrical characteristics (continued) Symbol Pin EOL-R Sink/source capability Relamp comparator EOL-R hysteresys Half bridge section – Half-bridge current sense Frequency increase HBCSH HBCS threshold HBCSL HBCS HBCS Latched threshold Half bridge section – Low side gate driver LSD Output low voltage ...
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... I CH are shown in Figure 4 and RUN RUN PRE PRE C C IGN IGN EOI EOI Tch Tch OSC OSC C C OSC OSC and R Figure 4: PRE || ) R RUN PRE 4.63 ⋅ ⋅ ---------- - D D 1.52 is typically 34 µ MAX MAX V V REF REF LOGIC LOGIC L6585D ...
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... HBCSH threshold (see the “Half-Bridge current control” paragraph). Figure 5, centre and right, shows the L6585D behavior as the lamp gets older doesn’t ignite for a time longer than the pre-heating one (counted by a cycle charge/discharge of the T ...
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... Application information 5.1.3 Run mode (time interval C As the voltage at EOI exceeds 1.9V and the lamp has ignited, the L6585D enters Run mode and remains in this condition unless one of the protections (all enabled in this mode) is trigged. The switching frequency reaches the F Equation 4 Figure 5 ...
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... L6585D 6 End of life – window comparator To detect the ageing of the lamp with particular attention to the effect appearing as asymmetric rectification, a programmable window comparator has been introduced (centered around “V higher than V REF By means of the resistor connected to the EOLP pin possible to select: 1. the sensing mode: – ...
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... W – W/2 – V – are the V values (equal in absolute value) that trigger the window DOWN K Half–window amplitude ± 720mV ± 220mV ± 220mV ± 720mV and R and R and R must (Figure up to 4.63V and then D L6585D 6, right). ...
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... Half-bridge current control The information about the lamp current can be obtained by reading the voltage across a sense resistor placed in series to the source of the half-bridge low side MOS. This circuitry is enabled at the end of the pre-heating phase and it enriches the L6585D with two features: ● ...
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... IC supply voltage is above the UVLO threshold; ● Reference for EOL in case of tracking reading. ● Disable: by forcing the pin below 0.75V an immediate unlatched shut-down is activated; it can be also used as re-lamp in fact after the pin voltage is above 0.8V a pre- heating/ignition sequence is repeated. 18/25 L6585D ...
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... L6585D 9 Re–lamp A second comparator has been introduced on the pin EOL-R; a voltage higher than the internal threshold is read as lamp absence so the chip suddenly stops switching, enters idle mode (low consumption) and is ready for a new pre-heating/ignition sequence as soon as a new lamp is inserted. ...
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... IC low consumption (V clamped) cc – Drivers stopped – IC low consumption (V clamped) cc – PFC driver stopped – Drivers stopped – IC low consumption (V clamped) cc L6585D Action required Lamp replacement (EOL-R below 4.63V) (2) Re-lamp cycle (2) Re-lamp cycle (2) Re-lamp cycle (2) Re-lamp cycle When the CTR voltage returns above 0 ...
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... L6585D 10 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label ...
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... Min. Typ. 0.004 0.014 0.009 0.020 45° (typ.) 0.496 0.393 0.050 0.450 0.291 0.020 8° (max.) L6585D Max. 0.104 0.008 0.096 0.019 0.012 0.512 0.419 0.300 0.050 0.029 ...
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... L6585D 11 Order codes Table 9. Order codes Part Number L6585D L6585DTR Package Packaging SO-20 SO-20 Tape and Reel Order codes Tube 23/25 ...
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... Revision history 12 Revision history Table 10. Revision history Date 12-Jan-2006 25-Oct-2006 21-Dec-2006 12-Apr-2007 23-May-2007 24/25 Revision 1 Initial release 2 Final datasheet Updated f value on RUN 3 page 8 4 Updated electrical values on 5 Updated Figure 1: Block diagram on page 1 L6585D Changes Table 4: Electrical characteristics on Table 4 and Eq.1 and 4 ...
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... L6585D Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...