page 1/5 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice. www.lem.com 090707/2 automotive current transducer hah1dr 200-s principle of hah1dr family the open loop transducers use an hall effect integrated circuit. the magnetic fux density b , contributing to the rise of the hall voltage, is generated by the primary current i p to be measured. the current to be measured i p is supplied by a current source i.e. battery or generator (fig. 1). within the linear region of the hysteresis cycle, b is proportional to: b ( i p ) = constant (a) x i p the hall voltage is thus expressed by: v h = (r h /d) x i x constant (a) x i p except for i p , all terms of this equation are constant. therefore: v h = constant (b) x i p the measurement signal v h amplifed to supply the user output voltage or current. fig. 1: principle of the open loop transducer +v c -v c i p v out 0v primary current i p isolated output voltage introduction the hah1dr family is for the electronic measurement of dc, ac or pulsed currents in high power automotive applications with galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). the hah1dr family gives you the choice of having different current measuring ranges in the same housing (from 200 a up to 900 a). features open loop transducer using the hall effect unipolar + 5 v dc power supply primary current measuring range up to 200 a maximum rms primary current limited by the busbar, the magnetic core or the asic temperature t < + 150c operating temperature range: - 40c < t < + 125c output voltage: full ratiometric (in sensitivity and offset) compact design. advantages excellent accuracy very good linearity very low thermal offset drift very low thermal sensitivity drift wide frequency bandwidth no insertion losses. automotive applications battery monitoring starter generators inverters hev application ev application.
page 2/5 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice. www.lem.com 090707/2 hah1dr 200-s dimensions hah1dr family (in mm. 1mm = 0.0394 inch) bill of materials plastic case pbt gf 30 magnetic core iron silicon alloy pins brass tin platted weight 38 g remarks v out > when i p fows in the direction of the arrow. system architecture v c 2 system architecture (example) r l >10 k w optional resistor for signal line diagnostic c l < 100 nf emc protection r c low pass flter emc protection (optional) v out diagnosis open circuit v in = v c short gnd v in = ov front view bottom view right view
page 3/5 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice. www.lem.com 090707/2 hah1dr 200-s absolute maximum ratings operating characteristics notes : 1) busbar temperature must be below 150c 2) transducer not protected against reverse polarity. 3) the output voltage v out is fully ratiometric. the offset and sensitivity are dependent on the supply voltage v c relative to the following formula: 4) tested only with small signal only to avoid excessive heating of the magnetic core. ) a / v ( i n g w i t h v g v v i c c o u t p 5 1 2 ? ? ? ? ? ? ? ? ? ? parameter symbol unit specifcation conditions min typ max electrical data primary current i p a -200 200 calibration current i cal a -200 200 @ t a = 25c supply voltage v c v 4.75 5.00 5.25 output voltage (analog) 3) v out v v out = ( v c /5) x (2.5 + g x i p ) @ v c sensitivity 3) g mv/a 10 @ v c = 5 v current consumption i c ma 15 20 @ v c = 5 v, @ - 40c < t a < 125c load resistance r l : 10 output internal resistance r out : 10 dc to 1 khz capacitive loading c l nf 1 100 ambient operating temperature t a c -40 125 connector limited 105c output drift versus power supply v out ps % 0.5 performance data sensitivity error e g % -1.0 0.5 1.0 @ t a = 25c @ i = i p electrical offset current i oe a 0.6 @ t a = 25c, @ v c = 5 v magnetic offset current i om 0.9 @ t a = 25c, @ v c = 5 v, after i p global offset current i o -1.5 1.5 @ t a = 25c average temperature coeffcient of v oe tcv oe av mv/c -0.08 0.03 0.08 @ - 40c < t < 125c average temperature coeffcient of g tcg av %/c -0.035 0.02 0.035 @ - 40c < t < 125c linearity error e l % -1 1 @ v c = 5 v @, t a = 25c, @ i = i p response time to 90 % of i pn step t r s 6 10 @ di/dt = 100 a/s frequency bandwidth 4) bw khz 30 @ -3 db output clamping voltage min v sz v 0.1 @ v c = 5 v, t a = 25c output clamping voltage max v sz v 4.9 @ v c = 5 v, t a = 25c output voltage noise peak-peak v no pp mv 22 dc to 1mhz parameter symbol unit specifcation conditions min typ max electrical data max primary current peak i pmax a 1) supply continuous over voltage v c v 7 not operating reverse voltage 2) -0.5 1 min @ t a = 25c output over voltage (continuous) v out v -0.5 v c + 0.5 continuous output current i out ma -10 10 output short-circuit duration t c min 2 rms voltage for ac isolation test v d kv 2 50 hz, 1 min isolation resistance r is m : 500 500 v - iso 16750-2 electrostatic discharge voltage v esd kv 2 jesd22-a114-b ambient storage temperature t s c -55 125
page 4/5 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice. www.lem.com 090707/2 hah1dr 200-s typical response time at 100 a/s hah1dr 200 sensitivity error (%) -5 -4 -3 -2 -1 0 1 2 3 4 5 -40 -20 0 20 40 60 80 100 120 temperature (c) hah1dr 200 electrical offset error (a) -3 -2 -1 0 1 2 3 -40 -20 0 20 40 60 80 100 120 temperature (c) hah1dr 200 fre que ncy ba ndw ith -8 -7 -6 -5 -4 -3 -2 -1 0 100 1000 10000 100000 frequency (hz) gain (db) hah1dr 200 pha se -90 -80 -70 -60 -50 -40 -30 -20 -10 0 100 1000 10000 100000 frequency (hz) phase () channel 1 ( yellow ) : primary current channel 2 ( re d ) : output voltage signal
page 5/5 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice. www.lem.com 090707/2 hah1dr 200-s sensitivity: the transducers sensitivity g is the slope of the straight line v out = f ( i p ), it must establish the relation: v out (i p ) = v c /5 ( g x i p + 2.5) (*) (*) for all symetrics transducers. offset with temperature: the error of the offset in the operating temperature is the variation of the offset in the temperature considered with the initial offset at 25c. the offset variation i ot is a maximum variation the offset in the temperature range: i ot = i oe max - i oe min the offset drift tci oeav is the i ot value divided by the temperature range. sensitivity with temperature: the error of the sensitivity in the operating temperature is the relative variation of sensitivity with the temperature considered with the initial offset at 25c. the sensitivity variation g t is the maximum variation (in ppm or %) of the sensitivity in the temperature range: g t = (sensitivity max - sensitivity min) / sensitivity at 25c. the sensitivity drift tcg av is the g t value divided by the temperature range. offset voltage @ i p = 0 a: is the output voltage when the primary current is null. the ideal value of v o is v c /2 at v c = 5 v. so, the difference of v o - v c /2 is called the total offset voltage error. this offset error can be attributed to the electrical offset (due to the resolution of the asic quiescent voltage trimming), the magnetic offset, the thermal drift and the thermal hysteresis. environmental test specifcations output noise voltage: the output voltage noise is the result of the noise foor of the hall elements and the linear i c amplifer gain. magnetic offset: the magnetic offset is the consequence of an over-current on the primary side. its defned after an excursion of i p max . linearity: the maximum positive or negative discrepancy with a reference straight line v out = f ( i p ). unit: linearity (%) expressed with full scale of i p max . linearity is measured on cycle + i p , o, - i p , o, + i p without magnetic offset (average values used). response time (delay time) t r : the time between the primary current signal and the output signal reach at 90 % of its fnal value typical: theorical value or usual accuracy recorded during the production. i p t [s] i [a] i t 90 % i s t r performances parameters definitions v out i p n o n l i n e a r i t y e x a m p l e r e f e r e n c e s t r a i g h t l i n e m a x l i n e a r i t y e r r o r l i n e a r i t y v a r i a t i o n i n i n % name standard conditions damp heat, steady state jesd22-a101 85c - 85c / 1000h isolation resistance iso 16750-2 4.10 500 v/1min temperature humidity cycle test iso 16750-4 -10 + 85c 10 days isolation test iec 60664-1 2 kv/50 hz/1min mechanical tests vibration test (random) iec 60068-2-64 iso 16750-3 & 4.1.2.5 (2007) 20 2000 hz random rms (11g rms) 8h/axis terminal strength test according to lem thermal shocks iec 60068-214 na -40 + 125c 300 cycles free fall iso 16750-3 4.3 1m concrete ground emc test radiated electromagnetic immunity directive 2004/104/ce iso 11452-2 30 v/m 20-2000 mhz bulk current injection immunity directive 2004/104/ce iso 11452-4 1-400 mhz - 60 ma radiated radio frequency electromagnetic feld immunity iec 61000-4-3 80 mhz to 1,000 mhz - 10 v/m electrostatic discharge immunity test iec 61000-4-2 air discharge=2 kv
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