? semiconductor components industries, llc, 2012 april, 2012 ? rev. p0 1 publication order number: ncs37005/d ncs37005 product preview ground fault interrupter (gfi) description the ncs37005 is a signal processor for gfi applications. the device integrates a flexible power supply (including both shunt and ldo regulators), and differential fault detection circuits. the proprietary fault processing circuitry offers high performance with low turns ratio ferrite current transformers. the device also includes a specialized dsp controller that offers best in class immunity to nuisance loads without the need for external analog filters. features ? 6.0 ? 18 volt operation (120 ? 480 v ac mains with the appropriate series impedance) ? ? 40 to 85 c ? very low power consumption: <5 mw @ 5 v ? 16 pin qfn package ? low cost/turns ratio ferrite current transformer (ct) detection of differential ? self syncing internal oscillator adjusts to ac mains frequency to guarantee full resolution on 50 and 60 hz distribution systems ? optimized solenoid deployment (coil is not energized near the ac mains zero crossings) ? randomized testing sequence to minimize noise and potential interactions on the ac mains ? >5 ma scr driver for additional immunity to supply noise/interference ? superior immunity to nuisance loads/noise (up to 10 a) without loss of detection capability or ct saturation ? these devices are pb ? free, halogen free/bfr free and are rohs compliant typical applications ? load panel gfi/rcd breakers ? gfi receptacles ? in ? line gfi circuits (power cords) this document contains information on a product under development. on semiconductor reserves the right to change or discontinue this product without notice. 1 http://onsemi.com qfn 16 mn suffix case 485g marking diagram pin connections xxxxx = specific device code a = assembly location l = wafer lot y = year w = work week g or = pb ? free package ccccc = country of origin xxxxx alyw ccccc mld ctresgn ctbias ctstim ctresd idf supply scrdrv gnd (top view) device package shipping ? ncs37005mntwg qfn16 tape & reel ncs37005mng qfn16 tube ordering information ncs37005darg tssop20 tape & reel NCS37005DAG tssop20 tube 1 ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specification brochure, brd8011/d. 1 16 tssop 16 da suffix case 948f
ncs37005 http://onsemi.com 2 control logic and digital filter idf supply te self trimmed rc osc waveform generator hv bandgap por brown out scrdrv driver vbias low pass filter ctbias ctstim ctresgn vss + + ? ? avdd/ dvdd mixer differential current detection grounded neutral detection offset correction g2n randomizer mains level detect (zero cross) mld ctresd testdin1 ? 5 testdout1 ? 2 figure 1. simplified block diagram
ncs37005 http://onsemi.com 3 table 1. pin function description ? qfn pin # name pad description 0 ground qfn center slug 1 mld mains level detect (zero cross) 2 cttest test port (must be tied to ctbias in functional mode). 3 ctbias 2 v reference that is connected to the external ct sensor 4 ctstim differential current measurement port for external ct 5 ctresd determines iv converter gain for detection threshold / matched to ct turns ratio (differential current) 6 idf front end noise filter capacitor 7 nc tie to ground or leave floating 8 nc tie to ground or leave floating 9 nc tie to ground or leave floating 10 nc tie to ground or leave floating 11 nc tie to ground or leave floating 12 nc tie to ground or leave floating 13 nc float 14 nc float 15 scrdrv used to trigger the solenoid at a fault detection 16 supply power supply table 2. pin function description ? tssop pin # name pad description 1 ctstim differential current measurement port for external ct 2 ground main ground connection for ic. 3 ctresd determines iv converter gain for detection threshold / matched to ct turns ratio (differential current) 4 idf front end noise filter capacitor 5 te test enable 6 nc tie to ground or leave floating 7 nc tie to ground or leave floating 8 nc tie to ground or leave floating 9 nc tie to ground or leave floating 10 nc tie to ground or leave floating 11 nc float 12 nc float 13 scrdrv used to trigger the solenoid at a fault detection 14 supply power supply 15 mld mains level detect (zero cross) 16 ctbias 2 v reference that is connected to the external ct sensor
ncs37005 http://onsemi.com 4 table 3. absolute maximum ratings rating symbol value unit supply voltage range vs 6.0 to 19 v v input voltage range (note 1) v in ? 0.3 to 6.0 v output voltage range v out ? 0.3 to 6.0 v or (v in + 0.3), whichever is lower v maximum junction temperature t j(max) 140 c storage temperature range tstg ? 65 to 150 c esd capability, human body model (note 2) esdhbm 2 kv esd capability, machine model (note 2) esdmm 200 v lead temperature soldering reflow (smd styles only), pb ? free versions (note 3) t sld 260 c stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. 1. refer to electrical characteristics and application information for safe operating area. 2. this device series incorporates esd protection and is tested by the following methods: esd human body model tested per aec ? q100 ? 002 (eia/jesd22 ? a114) esd machine model tested per aec ? q100 ? 003 (eia/jesd22 ? a115) latchup current maximum rating: 150 ma per jedec standard: jesd78 3. for information, please refer to our soldering and mounting techniques reference manual, solderrm/d table 4. thermal characteristics rating symbol value unit thermal characteristics, qfn16, 3x3.3 mm (note 4) thermal resistance, junction ? to ? air (note 5) thermal reference, junction ? to ? lead2 (note 5) r ja r jl 64 c/w thermal characteristics, tsop ? 5 (note 4) thermal resistance, junction ? to ? air (note 5) r ja c/w 4. refer to electrical characteristics and application information for safe operating area. 5. values based on copper area of 645 mm 2 (or 1 in 2 ) of 1 oz copper thickness and fr4 pcb substrate. table 5. operating ranges (note 6) parameter conditions min typ max units operating temperature ? 40 85 c idd 2 ma scr trigger current 8 ma scr trigger output voltage with 5 v supply 4.5 5 v fault current sensitivity ground fault with 1% resistor for rctresd 4.5 5 5.5 ma ground fault response time 5 ? 20 ma 150 ms ground fault response time 20 ? 100 ma 75 ms ground fault response time >100 ma 25 ms ct turns ratio 100 300 internal oscillator frequency 2 mhz ct driver closed loop bw 500 khz 6. refer to electrical characteristics and application information for safe operating area.
ncs37005 http://onsemi.com 5 applications information mld ctresgn ctbias ctstim ctresd idf scrdrv supply solenoid t1 cgn q1 dx full wave rectifier switch mode supply rmains csup rctd rzc cidf figure 2. typical application schematic or
ncs37005 http://onsemi.com 6 recommended external components: component type instance value note scr q1 ? on ? mcr08 diode dx ? on ? 1n4007 capacitor csup 1 ? 4.7 f for a full bridge rectifier capacitor cidf 180 ? 220 nf differential current filtering resistor rctd 20 ? 70 k matched to current transformer resistor rzc 400 ? 800 k zero cross detection resistor. value limits current resistor rmains 10 ? 45 k for a full bridge rectifier tvs t1 ? ~250 ? 400 v filtering the analog signal capture portion of the ic includes a single pole filter that can be set externally with cidf. this provides an additional layer of protection against false tripping under steady state noise conditions. high frequency steady state noise is common with pumps, motors or other cyclic noise generators. cidf = 220 nf = 1 khz low pass. setting trip sensitivity the ctresd resistor sets the threshold for the dif ferential current fault levels. increasing ctresd causes the fault levels to trip at lower dif ferential currents. ct efficiency at 60 hz must be considered. . ctresd= 400*#turns ? subject to ct efficiency at 60 hz
ncs37005 http://onsemi.com 7 package dimensions tssop ? 16 case 948f ? 01 issue b ??? ??? dim min max min max inches millimeters a 4.90 5.10 0.193 0.200 b 4.30 4.50 0.169 0.177 c ??? 1.20 ??? 0.047 d 0.05 0.15 0.002 0.006 f 0.50 0.75 0.020 0.030 g 0.65 bsc 0.026 bsc h 0.18 0.28 0.007 0.011 j 0.09 0.20 0.004 0.008 j1 0.09 0.16 0.004 0.006 k 0.19 0.30 0.007 0.012 k1 0.19 0.25 0.007 0.010 l 6.40 bsc 0.252 bsc m 0 8 0 8 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a does not include mold flash. protrusions or gate burrs. mold flash or gate burrs shall not exceed 0.15 (0.006) per side. 4. dimension b does not include interlead flash or protrusion. interlead flash or protrusion shall not exceed 0.25 (0.010) per side. 5. dimension k does not include dambar protrusion. allowable dambar protrusion shall be 0.08 (0.003) total in excess of the k dimension at maximum material condition. 6. terminal numbers are shown for reference only. 7. dimension a and b are to be determined at datum plane ? w ? . section n ? n seating plane ident. pin 1 1 8 16 9 detail e j j1 b c d a k k1 h g ? u ? s u 0.15 (0.006) t s u 0.15 (0.006) t s u m 0.10 (0.004) v s t 0.10 (0.004) ? t ? ? v ? ? w ? 0.25 (0.010) 16x ref k n n 7.06 16x 0.36 16x 1.26 0.65 dimensions: millimeters 1 pitch soldering footprint
ncs37005 http://onsemi.com 8 package dimensions ??? ??? ??? case 485g ? 01 issue f 16x seating plane l d e 0.10 c a a1 e d2 e2 b 1 4 8 9 16 notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. dimension b applies to plated terminal and is measured between 0.25 and 0.30 mm from terminal. 4. coplanarity applies to the exposed pad as well as the terminals. b a 0.10 c top view side view bottom view pin 1 location 0.05 c 0.05 c (a3) c note 4 16x 0.10 c 0.05 c a b note 3 k 16x l1 detail a l alternate terminal constructions ?? *for additional information on our pb ? free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. recommended 2x 0.50 pitch 1.84 3.30 1 dimensions: millimeters 0.58 16x 2x 0.30 16x outline package 2x 2x 0.10 c a b e/2 soldering footprint* dim min nom max millimeters a 0.80 0.90 1.00 a1 0.00 0.03 0.05 a3 0.20 ref b 0.18 0.24 0.30 d 3.00 bsc d2 1.65 1.75 1.85 e 3.00 bsc e2 1.65 1.75 1.85 e 0.50 bsc k 0.18 typ l 0.30 0.40 0.50 l1 0.00 0.08 0.15 on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. ncs37005/d publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5817 ? 1050 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 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative
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