STK-20PL

Sinomags Product Datasheet Current Sensor Product Series： STK-PL STK-80PL Part number： STK-100PL STK-120PL Version: Ver8.3 Sinomags Technology Co., Ltd Web site: www.sinomags.com STK-PL series current sensor CONTENT 1. Summary ................................................................................................................................................ 2 2. STK-80PL Electrical performance ......................................................................................................4 3. STK-100PL Electrical performance ....................................................................................................5 4. STK-120PL Electrical performance ....................................................................................................6 5. Output voltage VS primary current .....................................................................................................7 6. Accuracy characteristics in room temperature ................................................................................. 8 7. Accuracy cross temperature ............................................................................................................... 9 8. Frequency response and bandwidth ................................................................................................11 9. Step response time .............................................................................................................................11 10. Frequency delay performance .......................................................................................................... 12 11. Recommended PCB layout ............................................................................................................... 13 12. Dimension & Pin definitions ...............................................................................................................14 13. Appendix: typical application circuit ................................................................................................. 15 1/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor 1. Summary The STK-120PL series is based on TMR (Tunneling-Magnetoresistance) technology and open-loop design. It is suitable for DC, AC, pulsed and any kind of irregular current measurement under the isolated conditions. The nominal current range of the STK-120PL current sensor consists of 80A,100A,120A. Typical applications      PV combiner box PV inverter (MPPT & AC) motor driver controller SMPS & UPS Battery management system Standards    EN50178:1997 IEC 61010-1:2010 IEC 61326-1:2012 General parameter Parameter Symbol Unit Value Working temperature T_A ℃ -40 ~ 105 Storage temperature T_stg ℃ -40 ~ 105 Mass m g 10 Parameter Symbol Unit Value Supply voltage（non-destructive） VC V 6.0 ESD rating（HBM） UESD kV 4 ESD rating（CDM） UCDM kV 1.5 Absolute maximum rating Remark: the unrecoverable damage may occur when the product works on the conditions over the absolute maximum ratings. Long-time working on the absolute maximum ratings may cause the degradation on performance and reliability. 2/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor Ratings Parameter Symbol Primary involved potential Unit Value V AC/DC 600 Ambient operating temperature T_A ℃ 105 Primary current I_p A According to series primary current Secondary supply voltage U_c V DC 5 Output voltage V_out V 0.1 ~ 4.9 Isolation parameter Parameter Symbol Unit Value RMS voltage for AC test 50Hz/1 min Ud kV 5 Impulse withstand voltage 1.2/50µs Ûw kV 8 Clearance distance (pri. -sec) dCI mm 8 Shortest distance through air Creepage distance (pri. -sec) dCp mm 8 Shortest path along device body V0 according to UL 94 Case material Application example Application example Comment V V 600 Reinforced insulation, CAT III, PD 2, non uniform field according EN 50178, IEC 61010 1000 Basic insulation, CAT III, PD 2, non uniform field according EN 50178, IEC 61010 Application example V 1500 Basic insulation, CAT III, PD 2, according to IEC 62109-1 Altitude ≤ 3000 m Application example V 600 CAT III, PD 2, according to UL 508 3/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor 2. STK-80PL Electrical performance Condition：T_A = 25℃ Vcc = 5 V (Except special instructions) Parameter Symbol Unit Min Typ Max Comment Primary nominal current rms I_pn A 80 Primary current measuring range I_pm A -200 Supply voltage Vcc V 4.75 Current consumption Icc mA Reference voltage Vref V Rated output voltage V_FS V 0.8 (Vout - Vref )@ I_pn Internal output resistance R_out Ω 1 Output Quiescent voltage Voff V 2.48 Electrical offset voltage Voe mV Temperature drift of Voe Voe_TRange Magnetic offset current 2.48 200 5 5.25 5 10 2.5 2.52 2.52 Vout @ 0 A -10 10 (Vout – Vref) @ 0 A %V_FS -1.5 1.5 -40℃ ~ 105℃ I_om A -0.25 0.25 @ ±10 x I_pn Theoretical gain G_th mV/A 10 800 mV @ I_pn Error of gain Err_G %G_th ±1 Trimmed in the factory @ 25℃ Temperature drift of gain G_TR %G_th -1.0 1.0 -40℃ ~ 105℃ Rated linearity error Non-L_pn %I_pn -0.5 0.5 ±I_pn Linearity error @ I_pm Non-L_pm %I_pm -3 3 ±I_pm Reaction time t_ra µs 0.5 Step response time t_res µs 2 t_delay µs 1 200 kHz sine wave BW kHz 200 No RC circuit Vnoise mVpp 10 15 X % of I_pn -1 1 @ 25℃ X_TRange % of I_pn -3 3 -40℃ ~ 105℃ Delay time Frequency bandwidth (-3dB) Output voltage noise DC ~ 10 kHz DC ~ 100 kHz Accuracy @ 25℃ Accuracy @ -40℃ ~ 105℃ 4/15 Sinomags Technology Co., Ltd 2.5 Output function @ 10% of I_pn 2.5 @ 90% of I_pn http://www.sinomags.com STK-PL series current sensor 3. STK-100PL Electrical performance Condition：T_A = 25℃ Vcc = 5 V (Except special instructions) Parameter Symbol Unit Min Typ Max Comment Primary nominal current rms I_pn A 100 Primary current measuring range I_pm A -250 Supply voltage Vcc V 4.75 Current consumption Icc mA Reference voltage Vref V Rated output voltage V_FS V 0.8 (Vout - Vref )@ I_pn Internal output resistance R_out Ω 1 Output Quiescent voltage Voff V 2.48 Electrical offset voltage Voe mV Temperature drift of Voe Voe_TRange Magnetic offset current 2.48 250 5 5.25 5 10 2.5 2.52 2.52 Vout @ 0 A -10 10 (Vout – Vref) @ 0 A %V_FS -1.5 1.5 -40℃ ~ 105℃ I_om A -0.25 0.25 @ ±10 x I_pn Theoretical gain G_th mV/A 8 800 mV @ I_pn Error of gain Err_G %G_th ±1 Trimmed in the factory @ 25℃ Temperature drift of gain G_TR %G_th -1.0 1.0 -40℃ ~ 105℃ Rated linearity error Non-L_pn %I_pn -0.5 0.5 ±I_pn Linearity error @ I_pm Non-L_pm %I_pm -3 3 ±I_pm Reaction time t_ra µs 0.5 Step response time t_res µs 2 t_delay µs 1 200 kHz sine wave BW kHz 200 No RC circuit Vnoise mVpp 10 15 X % of I_pn -1 1 @ 25℃ X_TRange % of I_pn -3 3 -40℃ ~ 105℃ Delay time Frequency bandwidth (-3dB) Output voltage noise DC ~ 10 kHz DC ~ 100 kHz Accuracy @ 25℃ Accuracy @ -40℃ ~ 105℃ 5/15 Sinomags Technology Co., Ltd 2.5 Output function @ 10% of I_pn 2.5 @ 90% of I_pn http://www.sinomags.com STK-PL series current sensor 4. STK-120PL Electrical performance Condition：T_A = 25℃ Vcc = 5 V (Except special instructions) Parameter Symbol Unit Min Typ Max Comment Primary nominal current rms I_pn A 120 Primary current measuring range I_pm A -300 Supply voltage Vcc V 4.75 Current consumption Icc mA Reference voltage Vref V Rated output voltage V_FS V 0.8 (Vout - Vref )@ I_pn Internal output resistance R_out Ω 1 Output Quiescent voltage Voff V 2.48 Electrical offset voltage Voe mV Temperature drift of Voe Voe_TRange Magnetic offset current 2.48 300 5 5.25 5 10 2.5 2.52 2.52 Vout @ 0 A -10 10 (Vout – Vref) @ 0 A %V_FS -1.5 1.5 -40℃ ~ 105℃ I_om A -0.25 0.25 @ ±10 x I_pn Theoretical gain G_th mV/A 6.667 800 mV @ I_pn Error of gain Err_G %G_th ±1 Trimmed in the factory @ 25℃ Temperature drift of gain G_TR %G_th -1.0 1.0 -40℃ ~ 105℃ Rated linearity error Non-L_pn %I_pn -0.5 0.5 ±I_pn Linearity error @ I_pm Non-L_pm %I_pm -3 3 ±I_pm Reaction time t_ra µs 0.5 Step response time t_res µs 2 t_delay µs 1 200 kHz sine wave BW kHz 200 No RC circuit Vnoise mVpp 10 15 X % of I_pn -1 1 @ 25℃ X_TRange % of I_pn -3 3 -40℃ ~ 105℃ Delay time Frequency bandwidth (-3dB) Output voltage noise DC ~ 10 kHz DC ~ 100 kHz Accuracy @ 25℃ Accuracy @ -40℃ ~ 105℃ 6/15 Sinomags Technology Co., Ltd 2.5 Output function @ 10% of I_pn 2.5 @ 90% of I_pn http://www.sinomags.com STK-PL series current sensor 5. Output voltage VS primary current The dependence of Vout of STK-80PL on the primary current. The dependence of Vout of STK-100PL on the primary current. 7/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor The dependence of Vout of STK-120PL on the primary current. 6. Accuracy characteristics in room temperature The error of STK-PL current sensor at 25℃ compared with the standard output，((Vout – Vref)_measure @ I_n @ 25℃–Voe@25℃ – G_th * In) / V_FS。Vout represents voltage of Vout, Vref the voltage of Vref, I_n the primary current, Voe the (Vout – Vref)@0A, G_th the theoretical gain, V_FS the rated output voltage. 8/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor 7. Accuracy cross temperature The error of STK-PL current sensor at -40 ℃ ~105 ℃ compared with the standard output at room temperature, ((Vout – Vref)_measure @ I_n @ T_x –Voe@ T_x– G_th * In) / V_FS. Where, Vout represents voltage of Vout, Vref the voltage of Vref, I_n the primary current, T_x the present temperature, Voe the (Vout – Vref)@0A, G_th the theoretical gain, V_FS the rated output voltage. The error of STK-PL output (Vout – Vref) current sensor at -40℃ ~ 105℃ compared with the standard output (V = G_th * I_n), ((Vout – Vref) @ I_n @ T_x- G_th * I_n) / V_FS, Where, I_n represents present primary current, T_x the present temperature, G_th the theoretical gain, V_FS the rated output voltage. 9/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor Temperature drift of Voe, Voe_TRange = (Voe @ T_x – Voe @ 25 ℃ ) / V_FS. T_x represents present temperature, V_FS the rated output voltage. Error of gain, Err_G = ((((Vout – Vref) @ I_pn – (Vout – Vref) @( -I_pn)) / 2) – V_FS) / V_FS. Where I_pn represents the rated current, -I_pn the reversed rated current. 10/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor 8. Frequency response and bandwidth The frequency bandwidth of STK-xxPL series current sensor. The bandwidth of current sensor is DC ~ 200 kHz (-3dB). 9. Step response time The typical frequency response of STK-xxPL current sensor. The response time from 90% of the primary current (light blue) to 90% of the secondary output (dark blue) is less than 2.5 μs 11/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor 10. Frequency delay performance When testing 200 kHz sine wave, the typical result of STK-xxPL current sensor’s output. The response time from the primary current (light blue) to the secondary output (dark blue) is less than 1 μs. 12/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor 11. Recommended PCB layout Installation of view: overlooking (unit: mm) 1. 2. 3. 4. 5. Installing angle：Overlook (observe from the side of installing transducer) Recommended bore diameter of primary current line, (diameter of primary current × 1.2) mm Recommended bore diameter of secondary current line, (diameter of secondary current × 1.2) mm The maximum thickness of PCB is 2.5 mm The curve of wave soldering: 260℃ × 10 s Security： This current sensor must be used in limited-energy secondary circuit according to IEC 61010-1. This current sensor must be used in electric/electronic equipment with respect to appliance  standards and safety requirement in accordance with the manufacture’s operating instructions; When operating the current sensor, certain parts of the module can carry hazardous voltage;  Failure to wiring as shown in the diagram will damage the current sensor;   Ignoring this warning can lead to serious consequences.  A protective housing or a additional shield could be used.  Main supply must be able to disconnected. 13/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor 12. Dimension & Pin definitions 14/15 Sinomags Technology Co., Ltd http://www.sinomags.com STK-PL series current sensor 13. Appendix: typical application circuit R3 (kohm) C3 (nF) 20 20 20 20 81 810 Theoretical -3dB f = 1/(2πRC) (kHz) 198 98 10 Measured -3dB (kHz) ~ 200 ~ 100 ~ 10 The frequency characteristics of STK-xxPL series current sensor are not affected by the R-C setting (according to recommended R-C setting), therefore the active filter circuit or R-C circuit can be applied to modulate the sensor’s frequency characteristics. The signal input to ADC is 1.65+ R4/R2*(Vout-Vref) with the conditions: R1 = R2, R3 = R4, C3 = C4. 15/15 Sinomags Technology Co., Ltd http://www.sinomags.com