TLI4971_V01 INFINEON | Alldatasheet
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Datasheet Please read the Important Notice and Warnings at the end of this document Rev. 1.30 www.infineon.com 01-12-2021 TLI4971 high precision coreless current sensor for industrial applications in 8x8mm SMD package Features & Benefits Integrated current rail with typical 220 µΩ insertion resistance enables ultra-low power loss Less than 1nH parasitic inductance of integrated current rail enables wide bandgap design Bandwidth of 24 0kHz enables wide range of
applications
8x8mm form factor Very low sensitivity error over temperature Galvanic functional isolation up to 1150V VISO 3500V RMS a gency type-tested for 60 seconds per UL1577 Differential sensing principle Two independent ultrafast Over Current Detection outputs s Coreless current sensor in PG-TISON-8 package
Description
TLI4971 is a hi gh precision miniature coreless magnetic current sensor for AC and DC measurements with analog interface and two fast over-current detection outputs. Infineon's well -established and robust monolithic Hall technology enables accurate and highly linear measurement of currents with a full scale up to ±120A. All negative effects (saturation, hysteresis) commonly known from open loop sensors using flux concent ration techniques are avoided. The sensor is equipped with internal self -diagnostic feature. Typical applications are electrical drives and general purpose inverters. The differential measurement principle allows great stray field suppression for operation in harsh environments. Two separate interfa ce pins (OCD) provide a fast output signal in case a current exceeds a pre -set threshold. The sensor is shipped as a full y calibrated product without requiring any customer end -of-line calibration. All user -programmable parameters such as OCD thresholds, blanking times and output configuration modes are stored in an embedded EEPROM memory. Order Information Product Name Product Type Marking Ordering Code Package TLI4971-A120T5-U-E0001 120A measurement range, UL certified device 1)2) H71I1A1UH SP005272936 PG-TISON-8 TLI4971-A120T5-E0001 120A measurement range 1)2) H71I1A1_H SP005344532 PG-TISON-8 TLI4971-A075T5-U-E0001 75A measurement range, UL certified device 1)2) H71I3A1UH SP005446655 PG-TISON-8 TLI4971-A075T5-E0001 75A measurement range 1)2) H71I3A1_H SP005446653 PG-TISON-8 TLI4971-A050T5-U-E0001 50A measurement range, UL certified device 1)2) H71I4A1UH SP005446651 PG-TISON-8 TLI4971-A050T5-E0001 50A measurement range 1)2) H71I4A1_H SP005446648 PG-TISON-8 TLI4971-A025T5-U-E0001 25A measurement range, UL certified device 1)2) H71I6A1UH SP005446646 PG-TISON-8 TLI4971-A025T5-E0001 25A measurement range 1)2) H71I6A1_H SP005446644 PG-TISON-8 1) Current sensor for industrial / consumer applications, qualified according to AEC Q100 grade 2 2) Semi-differential mode, non-ratiometric output sensitivity
Datasheet 2 Rev. 1.30 01-12-2021 TLI4971 Datasheet Pin Configuration Figure 1 Pin layout PG-TISON-8-5 The current IPN is measured as a positive value when it flows from pin 8 (+) to pin 7 (-) through the integrated current rail. Pin configuration
1 VDD Supply voltage
2 GND Ground
3 VREF Reference voltage input or
4 AOUT Analog signal output
5 OCD1
output 1 (open drain output)
6 OCD2
output 2 (open drain output)
7 IP- Negative current terminal
pin (current-out)
8 IP+ Positive current terminal
pin (current-in) Target Applications The TLI4971 is suitable for AC as well as DC current measurement applications: Electrical drives General purpose inverters PV inverters Chargers Current monitoring Overload and over-current detection Due to its implemented magnetic interference suppression, it is extremely robust when exposed to external magnetic fields. The device is suitable for fast over-current detection with a configurable threshold level. This allows the control unit to switch off and protect the affected system from damage, independently from the main measurement path. Pin No. Symbol Function 1 2 3 4 5 6 + - IPN
Datasheet 3 Rev. 1.30 01-12-2021 TLI4971 Datasheet General Description The current flowing through the current rail on the primary side induces a magnetic field that is differentially measured by two Hall probes. The differential measurement principle of the magnetic field combined with the current rail design provides superior suppression of any ambient magnetic stray fields. A high performance amplifier combines the signal resulting from the differential field and the internal compensation information provided by the temperature and stress compensation unit. Finally the amplifier output signal is fed into a differential output amplifier which is able to drive the analog output of the sensor. Depending on the selected programming option, the analog output signal can be provided either as: Single-ended Fully-differential Semi-differential In single-ended mode, the pin VREF is used as a reference voltage input. The analog output signal is provided on pin AOUT. In fully-differential mode, both AOUT (positive polarity) and VREF (negative polarity) are used as signal outputs whereas VDD is used as reference voltage input. Compared to the single-ended mode, the fully-differential mode enables doubling of the output voltage swing. In semi -differential mode a chip -internal reference voltage is used and provided on VREF (output). The current sensing information is provided in a single-ended way on AOUT. For fast over -current detection, the raw analog signal provided by the Hall probes is fed into comparators with programmable switching thresholds. A user-programmable deglitch filter is implemented to enable the suppression of fast switching transients. The open-drain outputs of the OCD pins are active “low” and they can be directly combined into a wired-AND configuration on board level to have a general over-current detection signal. All user -programmable parameters such as OCD thresholds, deglitching fi lter settings and output configuration mode are stored in an embedded EEPROM memory. Programming of the memo ry can be performed in the application through a Serial Inspection and Configuration Interface (SICI). The interface is describ ed in detail in the programming guide which can be found on the Infineon website. Please contact your local Infineon sales office for further documentation. Standard Product Configuration The pre-configured full scale range is either set to ±120A, ±75A, ±50A or ±25A depending on the choosen product variant. The pre-configured output mode is set to semi-differential mode. The quiescent voltage is set to 1.65V. The OCD threshold of channel 1 is set to the factor 1.25 of the full scale range. The OCD threshold of channel 2 is set to the factor 0.82 of the full scale range. The pre-defined setting of the OCD deglitching filter time is set to 0µs. The sensor is pre-configured to work in the non-ratiometric mode. The sensitivity and the derived measurement range (full scale) can be reprogrammed by user according to the sensitivity ranges listed in Table 4. The sensor can be reprogrammed into single -ended operating mode or fully -differential mode by user without any recalibration of the device. The OCD thresholds and filter settings can be reprogrammed by the user according to the values listed in Table 6 and Table 7. For semi -differential uni-directional mode or ratiometric output sensitivity , please contact your local Infineon sales office.
Datasheet 4 Rev. 1.30 01-12-2021 TLI4971 Datasheet Block Diagram The current flowing through the current rail on the primary side induces a magnetic field , which is measured by two Hall probes differentially. The differential measurement principle provides superior suppression of any ambient magnetic stray fields. A high performance amplifier combines the signal resulting from the differential field and the compensation information , provided by the temperature and stress compe nsation unit. Finally the amplifier output signal is fed into a differential output amplifier , which is able to drive the analog output of the sensor. Temp Stress MUX Output Offset Signal Conditioning Infrastructure (power, clk, references ) VDD GND OCD1 AOUT VREF OCD2 EEPROM IP+ IP- Diff. Hall References Differential Hall plate Bias signal f or Diagnosis Mode Integrated current rail Figure 2 Block Diagram
Datasheet 5 Rev. 1.30 01-12-2021 TLI4971 Datasheet Absolute Maximum Ratings Table 1 Absolute Maximum Ratings General conditions (unless otherwise specified): VDD = 3.3V; TS = -40°C … +105°C Parameter Symbol Min Typ Max Unit Note / Test Condition Supply voltage VDD -0.3 3.3 3.6 V Primary nominal rated current LF1) IPNRLF -70 - 70 A Peak, frequency < 10Hz Primary nominal rated current HF1) IPNRHF -70 - 70 A RMS, frequency ≥ 10Hz Primary current IPNS -250 - 250 A Single peak for 10µs, 10 assertions per lifetime Voltage on interface pins VREF, OCD1, AOUT VIO -0.3 - VDD + 0.3 V Voltage on Interface pin OCD2 VIO_OCD2 -0.3 - 21 V ESD voltage2) VESD_HBM -2 - 2 kV ESD voltage3) VESD_SYS -16 - 16 kV In the application circuit Voltage slew-rate on current rail ΔV/dt - - 10 V/ns Full voltage range Maximum junction temperature Tj_max - - 130 °C Storage temperature TA_STORE -40 - 130 °C Life time LT 15 - - Years Considering continuous operation with TS = 70°C and I = 30 ARMS 1) Tested with primary nominal rated current of 70A pea k on Infineon reference PCB at Low F requency (LF). Thermal equilibrium reached after 2 min. 2) Human Body Model (HBM), according to standard AEC-Q 100-002 3) According to standard IEC 61000−4−2 electrostatic discharge immunity test Stress above the limit values listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Maximum ratings are absolute ratings. Exceeding only one of these values may cause irreversible damage to the integrated circuit.
Datasheet 6 Rev. 1.30 01-12-2021 TLI4971 Datasheet Product Characteristics Table 2 Operating Ranges General conditions (unless otherwise specified): VDD = 3.3V; TS = -40°C … +105°C Parameter Symbol Min. Typ. Max. Unit Note / Test Condition Supply voltage VDD 3.1 3.3 3.5 V Ambient temperature at soldering point TS -40 - 105 °C Measured at soldering point Capacitance on analog output pin CO 4.7 6.8 8 nF W/o decoupling resistor, including parasitic cap on the board Capacitor on VDD CVDD - 220 - nF Reference input voltage VREF - 1.65 - V Default value is semi-differential mode. Other values available by EEPROM: 1.2V, 1.5V, 1.8V Reference input voltage variation VREF_var -10 - 10 % EEPROM programming voltage VIO_PRG 20.5 - 21.0 V Table 3 Operating Parameters General conditions (unless otherwise specified): VDD = 3.3V; TS = -40°C … +105°C Parameter Symbol Min. Typ. Max. Unit Note / Test Condition Current consumption IDD - 18 25 mA I(AOUT) = 0mA Primary path resistance RPN - 220 - µΩ 25°C, when soldered on PCB with 140µm copper thickness Power-on delay time tPOR - 1.0 1.5 ms From VDD rising above VDD(min) to full operation. 0A primary input current. Voltage on interface pin OCD1 VIO_OCD1 -0.3 - 3.5 V Voltage on interface pin OCD2 VIO_OCD2 -0.3 - 3.5 V In functional mode Voltage on analog output AOUT VAOUT -0.3 - VDD + 0.3 V Undervoltage/overvoltage lockout delay tUVLOe 1 2.4 3 µs Enabled to disabled Thermal resistance1) RTHJS - 0.25 - K/W Current rail to soldering point, on Infineon reference PCB (see related application note AppNote TLI4971 PCB) 1) Not subject to production test. Verified by design and characterization.
Datasheet 8 Rev. 1.30 01-12-2021 TLI4971 Datasheet Table 4 Analog Output Characteristics General conditions (unless otherwise specified): VDD = 3.3V; TS = -40°C … +105°C Parameter Symbol Min Typ Max Unit Note / Test conditions Quiescent output voltage (bidirectional option 1)1)2) VOQbid_1 - VDD/2 - V IPN = 0A; fully- differential or semi- differential (bidirectional) modes, standard setting Quiescent output voltage (bidirectional option 2)2) VOQbid_2 - 1.5 - V IPN = 0A; semi- differential (bidirectional) mode; for this option the ratiometricity offset is disabled Quiescent output voltage (unidirectional mode)2) VOQuni - VDD/5.5 - V IPN = 0A; semi- differential (unidirectional) mode Sensitivity, range11)2)3) S1 - 10 - mV/A ±120A FS (Full Scale) Sensitivity, range22)3) S2 - 12 - mV/A ±100A FS Sensitivity, range32)3) S3 - 16 - mV/A ±75A FS Sensitivity, range42)3) S4 - 24 - mV/A ±50A FS Sensitivity, range52)3) S5 - 32 - mV/A ±37.5A FS Sensitivity, range62)3) S6 - 48 - mV/A ±25A FS Sensitivity ratiometry factor KS - 1 - - Quiescent ratiometry factor KOQ - 1 - - Analog output drive capability IO -2 - 2 mA DC current Analog output saturation voltage VSAT - 150 300 mV VDD-VAOUT; Output current = 2mA Transfer function cutoff frequency BW 120 240 - kHz -3dB criterion, CO = 6.8nF Output phase delay4) φdelay - - 48 ° fsignal = 120kHz Output Noise density5)6) INOISE - 350 - µA/√Hz Referenced to Input current, typical value is at 25°C. Higher noise is present at higher temperatures. External Homogenous magnetic field suppression4) BSR 34 40 - dB Frequency up to 150kHz. Up to 20mT homogeneous field applied 1) Pre-configured setting, for other pre-configured versions please contact your local sales. 2) Can be programmed by the user (valid only for 120A version). 3) Values refer to semi-differential mode or single-ended mode, with VREF =1.65 V. In fully-differential mode the sensitivity value is doubled. 4) Not subject to production test. Verified by design and characterization. 5) Typical value in fully-differential mode, sensitivity range S6 6) 𝑁𝑜𝑖𝑠𝑒 𝐷𝑒𝑛𝑠𝑖𝑡𝑦 = 𝑂𝑢𝑡𝑝𝑢𝑡 𝑁𝑜𝑖𝑠𝑒 [𝑉𝑅𝑀𝑆] √ 𝜋 2 ∗ 𝐵𝑊[𝐻𝑧] 𝑆𝑒𝑛𝑠𝑖𝑡𝑖𝑣𝑖𝑡𝑦[𝑉
Datasheet 9 Rev. 1.30 01-12-2021 TLI4971 Datasheet Table 4 Analog Output Characteristics (cont’d) General conditions (unless otherwise specified): VDD = 3.3V; TS = -40°C … +105°C Parameter Symbol Min Typ Max Unit Note / Test conditions Sensitivity error (all ranges) ESENS -1.4 - 1.4 % TS = 25°C, 0h, ±3σ Sensitivity error (all ranges) over temperature ESENST -2.1 - 2.1 % TS = -40°C to 25°C, 0h, ±3σ Sensitivity error (all ranges) over temperature and lifetime4) ESENSL -3 - 3 % Output offset (all ranges) EOFF -200 - 200 mA TS = 25°C, 0h, ±3σ Output offset (all ranges) over temperature EOFFT -200 - 200 mA TS = -40°C to 25°C, 0h, ±3σ -250 - 250 mA TS = 25°C to 105°C, 0h, ±3σ Output offset (all ranges) over temperature and lifetime4) EOFF_L -500 - 500 mA Total error (S1) ETOT_S1 -1.6 - 1.6 % TS = 25°C, 0h, ±3σ, includes linearity error Total error (S1) over temperature ETOT_S1 includes linearity error -1.7 - 1.7 % TS = 25°C to 105°C, 0h, ±3σ, includes linearity error Total error (S6) ETOT_S6 -1.7 - 1.7 % TS = 25°C, 0h, ±3σ, includes linearity error Total error (S6) over temperature ETOT_S6 includes linearity error -2.0 - 2.0 % TS = 25°C to 105°C, 0h, ±3σ, includes linearity error Total error over temperature and lifetime4) ETOTL -3.45 - 3.45 % Percentage of FS, sensitivity S1; includes sensitivity, offset and linearity error 4) Not subject to production test. Verified by design and characterization.
Datasheet 11 Rev. 1.30 01-12-2021 TLI4971 Datasheet Fast Over-Current Detection (OCD) Output Parameters Table 5 Common OCD Parameters General conditions (unless otherwise specified): VDD = 3.3V; TS = -40°C … +105°C, CL=1nF, RPU=4.7kΩ Parameter Symbol Min Typ Max Unit Note / Test Conditions Threshold level tolerance1) ITHT -10 - 10 % Response time jitter1) ΔtD_OCD - - 0.25 µs At 3σ, Irail=2xITHRx.x, input rise time 0.1µs Deglitch filter basic time tOCDgl 400 500 600 ns Detection minimum time tOCD_low 3 - - µs Valid for both OCDs Load capacitance CL - - 1 nF Open-drain current IOD_ON - - 1 mA DC current Pull-up resistor RPU 1 4.7 10 kΩ To VDD 1) Not subject to production test. Verified by design and characterization. Table 6 OCD1 Parameters Parameter Symbol Min Typ Max Unit Note / Test Conditions Threshold level - Level11)2) 3) ITHR1.1 - 1.25 - x IFSR Factor with respect to IFS (IFS = current full scale according to programming i.e. 120A) Threshold level - Level21)2) ITHR1.2 - 1.39 - x IFSR Factor with respect to IFS Threshold level - Level31)2) ITHR1.3 - 1.54 - x IFSR Factor with respect to IFS Threshold level - Level41)2) ITHR1.4 - 1.68 - x IFSR Factor with respect to IFS Threshold level - Level51)2) ITHR1.5 - 1.82 - x IFSR Factor with respect to IFS Threshold level - Level61)2) ITHR1.6 - 1.96 - x IFSR Factor with respect to IFS Threshold level - Level71)2) ITHR1.7 - 2.11 - x IFSR Factor with respect to IFS Threshold level - Level81)2) ITHR1.8 - 2.25 - x IFSR Factor with respect to IFS Response time4) tD_OCD1 - 0.7 1 µs IPN = 2*ITHR1.x Fall time5) tf_OCD1 - 100 150 ns Deglitch filter setting2)6) OCD1gl_mul 0 - 7 - tdeglitch = OCD1gl_mul*tOCDgl pre-configured setting = 0 1) Symmetric threshold level for positive and negative currents. 2) Can be programmed by user. 3) Pre-configured threshold level 4) Time between primary current exceeding current threshold and falling edge of OCD1-pin at 50%. 5) Not subject to production test. Verified by design and characterization. 6) The specified deglitching timing is valid when input current step overtakes the threshold of at least 10%.
Datasheet 12 Rev. 1.30 01-12-2021 TLI4971 Datasheet Table 7 OCD2 Parameters Parameter Symbol Min Typ Max Unit Note / Test Conditions Threshold level - level11)2) ITHR2.1 - 0.5 - x IFSR Factor with respect to IFS (IFS = current full scale according to programming i.e. 120A) Threshold level - level21)2) ITHR2.2 - 0.61 - x IFSR Factor with respect to IFS Threshold level - level31)2) ITHR2.3 - 0.71 - x IFSR Factor with respect to IFS Threshold level - level41)2)3) ITHR2.4 - 0.82 - x IFSR Factor with respect to IFS Threshold level - level51)2) ITHR2.5 - 0.93 - x IFSR Factor with respect to IFS Threshold level - level61)2) ITHR2.6 - 1.04 - x IFSR Factor with respect to IFS Threshold level - level71)2) ITHR2.7 - 1.14 - x IFSR Factor with respect to IFS Threshold level - level81)2) ITHR2.8 - 1.25 - x IFSR Factor with respect to IFS Response time4) tD_OCD2 - 0.7 1.2 µs IPN = 2 x ITHR2.x Fall time5) tf_OCD2 - 200 300 ns Deglitch filter setting2)6) OCD2gl_mul 0 - 15 - tdeglitch = OCD2gl_mul x tOCDgl pre-configured setting = 0 1) Symmetric threshold level for positive and negative currents. 2) Can be programmed by user. 3) Pre-configured threshold level. 4) Time between primary current exceeding current threshold and falling edge of OCD2-pin at 50%. 5) Not subject to production test. Verified by design and characterization. 6) The specified deglitching timing is valid when input current step overtakes the threshold of at least 10%. Undervoltage / Overvoltage detection TLI4971 is able to detect undervoltage or overvoltage condition of its own power supply (VDD). When an undervoltage (VDD<UVLOH) or overvoltage (VDD>OVLOH) condition is detected both OCD pins are pulled down in order to signal such a condition to the user. The undervoltage detection on OCD pins is performed only if VDD > VDD,OCD. Both OCD pins are pulled down at start up. When VDD exceeds the undervoltage threshold UVLOH_R and the power on delay time tPOR has been reached, the sensor indicates the correct functionality and high accuracy by releasing the OCD pins. Table 8 Undervoltage / Overvoltage parameters General conditions (unless otherwise specified): VDD = 3.3V; TS = -40°C … +105°C Parameter Symbol Min. Typ. Max. Unit Note / Test Condition Supply undervoltage lockout threshold UVLOH_R - - 3 V VDD at rising edge Supply undervoltage lockout threshold UVLOH_F 2.5 - - V VDD at falling edge Supply overvoltage lockout threshold OVLOH 3.55 - - V VDD at rising edge OCD undervoltage detection limit VDD,OCD 1.8 - - V For VDD<VDD,OCD undervoltage may not be performed.
Datasheet 13 Rev. 1.30 01-12-2021 TLI4971 Datasheet Isolation Characteristics TLI4971 conforms functional isolation. Table 9 Isolation Characteristics Parameter Symbol Min Typ Max Unit Note / Test Conditions Maximum rated working voltage (sine wave)1)2)3) VIOWM - - 690 V RMS, @ 4000m altitude Maximum rated working voltage (sine wave)1)2)3) VIOWMP - - 975 V Peak, @ 4000m altitude Maximum repetitive isolation voltage2)3) VIORM - - 1150 V Max DC voltage, spike, @ 4000m altitude Apparent charge voltage capability (method B)2)3) VPDtest 1500 - - V Partial discharge < 5pC peak @ 0m altitude Isolation test voltage3)4) VISO 3500 - - V RMS, 60s Isolation production test voltage VISOP 3000 - - V RMS, in production, 1.2s, UL certified version VISOP 2470 - - V RMS, in production, 600ms, Non-UL certified version Isolation pulse test voltage3) Vpulse 6500 - - V Peak, rise time = 1.2µs, fall time = 50µs Minimum external creepage distance CPG 4 - - mm Minimum external clearance distance CLR 4 - - mm Minimum comparative tracking index CTI Material group II - - - Isolation resistance3) RIO 10 - - GΩ UIO = 500V DC, 1min 1) The given value is considered an example based on pollution degree 2. 2) After stress test according to qualification plan. 3) Not subject to production test. Verified by design and characterization. 4) Agency type tested for 60 seconds by UL according to UL 1577 standard.
Datasheet 15 Rev. 1.30 01-12-2021 TLI4971 Datasheet Optional low pass filter for bandwidth limitation fc = 48.2kHz VSens 220nF GND 4k7 4k7 6.8nF 25V VCC_IO VDD GND VREF AOUT OCD1 OCD2 INTN INTN A/Din A/Din VCC GND TLI4971 µC 220 220 6.8nF 25V 1nF 25V 1nF 50V 15nF 25V 15nF 25V Figure 7 Application circuit with external components. In-circuit-programming not included. For bandwidth limitation an external filter is recommended as shown in the above application circuits.
Datasheet 18 Rev. 1.30 01-12-2021 TLI4971 Datasheet Package The TLI4971 is packaged in a RoHS compliant, halogen-free leadless package (QFN-like).
0.05 MAX
A |0.2| 1.1 MAX. 0.300.25 2.32 4.83 0.1 A 0.1 A 4.83 0.6 2.32 0.25 0.1 A 0.1 A 7 8 0.30 0.40.4 1.41 2.75 3.0 0.1 B 4.20.8 0.55 6 11.0 1.4 0.4 8 x 1.13 1.63 0.25 0.1 B INDEX MARKING 1.0 0.1 AM R0.30 R0.20 R0.20 R0.30 0.60 0.60 1.61 2.26 0.6 Figure 12 PG-TISON-8 package dimensions
Datasheet 19 Rev. 1.30 01-12-2021 TLI4971 Datasheet
Revision History
Major changes since the last revision 12-02-2021 Editorial changes first page: shorten features, benefits and description Add 6 new variants to order information Pre-configured OCD threshold levels changed: Page3, Table 6 and Table 7 Updated Table 9, isolation characteristics Updated application circuits Increase upper limit of EEPROM programming voltage from 20.7 to 21.0 Added chapter “typical performance characteristics” Datasheet version 1.20 01-12-2021 Updated Table 3: Added typical value for the Power-on delay time Updated Table 4: Reprogramming limited to 120A – version only Updated Table 4: Added accuracy criterion 3σ to initial sensitivity, offset and total error Updated Table 5: Enlarged the allowed range of pull-up resistor Separated Table 8 which was former part of Table 3: Overvoltage / Undervoltage parameters Updated Figure 8 and Figure 9: latest production data Adding Figure 10 and Figure 11: gain, phase-shift over frequency Datasheet version 1.30 Date Description of change 10-02-2020 Datasheet version 1.10
81726 München, Germany
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