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UBA2016ATN1 Datasheet(PDF) 11 Page - NXP Semiconductors |
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UBA2016ATN1 Datasheet(HTML) 11 Page - NXP Semiconductors |
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11 / 42 page  UBA2016A_15_15A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Objective data sheet Rev. 1 — 20 May 2011 11 of 42 NXP Semiconductors UBA2016A/15/15A 600 V fluorescent lamp driver Fig 9. State diagram reset OR disable VDD high AND enable AND NOT(overtemp) GLHB AND (reset OR disable) GLHB AND (VDD low OR overtemp) reset restart NOT(reset) Preheat time completed f low OR ignition detected 001aam538 Non oscillating states (IC is off) Low power consumption GHHB and GPFC low Oscillating states (IC is on) Reset state GLHB low stop latch and ignition attempt counter are reset Preheat state BOOST and EOL disabled frequency is decreased until HB preheat current or the set value for the preheat frequency (UBA2015(A) only) is reached Power on Standby state GLHB high Stop state GLHB low fast fault fault timeout Other definitions: enable = (VFFPRHT > Vth(en)(FFPRHT)) disable = NOT(enable) ignition detected = (VIFB > Vth(lod)(IFB)) AND (VVFB < Vth(lod)(VFB)) Auto-restart state GLHB low Ignition state BOOST and EOL disabled frequency is decreased as long as no lamp overvoltage or HB overcurrent or hardswitching(1) is detected (1)(UBA2016(A) only) Burn state ignition attempt counter is reset BOOST function enabled EOL protection enabled Frequency determined by lamp current regulation loop fault timeout AND (ignition attempts = 1) fault definitions: overtemp = fast fault = slow fault = the fault timer is started by slow fault and runs as long as slow fault continues. NOT(slow fault) resets the fault timer. (1)(except for UBA2016A in IGNITION state after ZVS has been seen) (2)(BURN state only) {set} T > Tth(act)otp {reset} T < Tth(rel)otp over voltage extra OR capacitive mode(1) OR (over current lamp AND f high) coil saturation(2) CPT low OR VFB low OR NOT(PFC OK) OR over voltage OR (over voltage end of life AND NOT (deep dimming))(2) OR coil saturation OR hardswitching OR brownout OR asymetrical end of life(2) fault timeout AND (ignition attempts = 2) Supply voltage definitions reset = (VDD < Vrst(VDD)) restart = (VDD < Vrestart(VDD)) VDD low = (VDD < Vstop(VDD)) VDD high = (VDD > Vstartup(VDD)) |
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