cob901 advanced ground fault interrupter august. 2003(rev2.) - 1 - www.interpionsemi.com the cob901 is a semiconductor integrated circuit with amplifier for a high-speed earth leakage circuit breaker. the cob901,an advanced ground fault in- terrupter consists of differential amplifier, internal time delay,latch circuit and precision voltage reference. it is connected to the secondary side of the zero current transformer(zct) which detects leakage current in the both inputs of the differential amplifier. it drives a thyristor connected to the output terminal of latch circuit. the internally integrated high frequency noise filter can eliminate the abnormal input noises. the operational amplifier s output noise rejection and adequate time delay acquirements that are specified in ksc4613 can be achieved by internal blanking circuit. -low power consumption (pd =5mw, 110v/220v) -input high frequency noise filter -internal blanking circuit -internal noise removal block -high gain differential amplifier -minimum 100ua output current to trigger scr -extremely minimized external part counts -high noise immunity, large surge margin -pellet,8dip, 8sop package device package operating temp cob901p pellet C901 8sop -30 o c ~ +80 o c cob901 8dip descriptions block diagram order information features 8sop 8dip
cob901 advanced ground fault interrupter august. 2003(rev2.) - 2 - www.interpionsemi.com pin descriptions pin connections(pkg) characteristics symbol value unit maximum supply current iccmax 10 ma operating maximum supply voltage vccmax 20 v power dissipation(8dip/8sop) pd 800 / 500 mw ref pin current(note 1) vin pin bias 100 ma gnd pin bias 20 ma ref pin bias 100 ma gnd pin bias 20 ma operating junction temperature tj -30 ~ +80 o c storage temperature tstg -55 ~ 125 o c vin pin current(note 1) absolute maximum ratings (ta=25 o c) no symbol i/o description 1 ref i reference input 2 vin i negative input 3 gnd - ground 4 nc - no connection 5 nc - no connection 6 nc - no connection 7 out o signal output 8 vcc i supply voltage note 1 ; input current must be less than 1ms of the pulse width and its duty must be less than 10%.
cob901 advanced ground fault interrupter august. 2003(rev2.) - 3 - www.interpionsemi.com electrical characteristics (ta = 25 o c, unless otherwise specified.) characteristics symbol conditions min typ max unit supply current i cc v cc =16v,vi=0v - 350 550 ua drive supply current i dcc v cc =16v,vi=30mv, vo=0.7v - 0.7 1.2 ma output saturation voltage vsat iv cc =2ma,vi=0v - - 300 mv output sinking capa- bility isink iv cc =2ma,vi=0v, vol=5v 1.5 3.0 4.5 ma trip voltage(note 2) vtrip iv cc =2ma,vi=variable 10 13.5 17 mv trip time ttrip iv cc =2ma,vi=30mv 2 4 6 ms output current io iv cc =2ma,vi=30mv 100 250 500 ua differential input clamp voltage v dcc iin =+/-100ma 0.4 1.1 2.5 v note 2 ; input voltage signal(ref,vin) should be continued more than 6ms. test circuit
cob901 advanced ground fault interrupter august. 2003(rev2.) - 4 - www.interpionsemi.com typical application r s c s
cob901 advanced ground fault interrupter august. 2003(rev2.) - 5 - www.interpionsemi.com electrical diagrams fig.1 : supply current .vs. temperature fig.2 : idcc vs. temperature -40-20 0 20406080100 0 50 100 150 200 250 300 350 400 450 500 temperature ( o c) test condition vcc=16v,vi=0mv icc vs. temp i c c ( u a ) -40-20 0 20406080100 400 450 500 550 600 650 700 750 800 850 900 950 1000 temperature ( o c) test condition vcc=16v,vi=0mv idcc vs. temp i d c c ( u a )
cob901 advanced ground fault interrupter august. 2003(rev2.) - 6 - www.interpionsemi.com electrical diagrams fig.3 : trip voltage vs. temperature fig.4 : trip time vs. temperature -40-20 0 20406080100 0 2 4 6 8 10 12 14 16 18 20 temperature ( o c) vcc=16v vi=0mv->30mv vtr=vi when vo=high vtr vs. temp v t r ( m v ) -40-20 0 20406080100 0 1 2 3 4 5 6 7 temperature ( o c) vcc=16v vi=0mv->30mv vtr=vi when vo=high ttr vs. temp t t r ( m s )
cob901 advanced ground fault interrupter august. 2003(rev2.) - 7 - www.interpionsemi.com fig.5 : output current vs. temperature fig.6 : vcc vs. ivcc 02468 10 0 5 10 15 20 25 30 35 40 45 50 ivcc(ma) ivcc=0.1ma->10ma vi=0mv vcc vs. ivcc v c c ( v ) -40-20 0 20406080100 0 50 100 150 200 250 300 350 400 450 500 temperature ( o c) vcc=16v vi=30mv vo=0.7v io vs. temp i o ( u a ) electrical diagrams
cob901 advanced ground fault interrupter august. 2003(rev2.) - 8 - www.interpionsemi.com * coordinates 8 7 6 5 1 2 3 4 y0901x -r1 pad no. name coordinates pad size bonding probe tip x(um) y(um) 1 ref 229 166 90um x 90um bonding tip 2 vin 556 166 90um x 90um bonding tip 3 gnd 759.5 166 90um x 90um bonding tip 4 n/c 988.5 166 90um x 90um bonding (option) tip 5 n/c 960.5 884 90um x 90um bonding (option) tip 6 n/c 659.5 884 90um x 90um bonding (option) tip 7 out 489.5 884 90um x 90um bonding tip 8 vcc 166 821 90um x 90um bonding tip (0,0) pad information
cob901 advanced ground fault interrupter august. 2003(rev2.) - 9 - www.interpionsemi.com package dimension
cob901 advanced ground fault interrupter august. 2003(rev2.) - 10 - www.interpionsemi.com package dimension
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