TLI4971 [INFINEON]

TLI4971 high precision coreless current sensor for industrial applications in 8x8mm SMD package;


型号：	TLI4971
厂家：	Infineon
描述：	TLI4971 high precision coreless current sensor for industrial applications in 8x8mm SMD package
文件：	总19页 (文件大小：1035K)
中文：	中文翻译
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TLI4971 high precision coreless current sensor for industrial

applications in 8x8mm SMD package

Description

Features & Benefits

TLI4971 is a high precision miniature coreless

magnetic current sensor for AC and DC

measurements with analog interface and two fast

over-current detection outputs.

 Integrated current rail with typical 225µΩ insertion

resistance enables ultra-low power loss

 Smallest form factor, 8x8mm SMD, for easy

integration and board area saving

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 concentration techniques are avoided. The

sensor is equipped with internal self-diagnostic

feature.

Typical applications are electrical drives (up to

690V), current monitoring, chargers, photovoltaic

inverters, general purpose inverters, overload and

over-current detection.

 Single supply voltage, 3.1V to 3.5V

 High accurate, scalable, DC & AC current sensing

 Full scale up to ±120A

 Bandwidth greater than 120kHz enables wide range

of applications

 Low phase delay (< 48° at below 120kHz) for easy

closed loop control

 Very low sensitivity error over temperature (< 2.5%)

 Excellent stability of offset over temperature and

lifetime

 Integrated isolator provides high robustness to

voltage slew rates up to 10V/ns

The digitally assisted analog concept of TLI4971

offers superior stability over temperature and

lifetime thanks to the proprietary digital stress and

temperature compensation. The differential

measurement principle allows great stray field

suppression for operation in harsh environments.

The integrated primary conductor (current rail)

with very low insertion resistance minimizes the

power loss and enables miniaturization of sensing

circuitry. A small 8mm x 8mm leadless package

(QFN-like) allows for standard SMD assembly.

Two separate interface pins (OCD) provide a fast

output signal in case a current exceeds a pre-set

threshold.

 Galvanic functional isolation up to 1150V peak V_IORM

 V_ISO2500V RMS agency type-tested for 60 seconds

per UL1577

 Partial discharge capability of at least 1200V

 Differential sensor principle ensures superior

magnetic stray field suppression

 Two independent fast Over-Current Detection (OCD)

pins with configurable thresholds enable protection

mechanisms for power circuitry (typical 0.7µs)

 Ratiometric and non ratiometric analog output

 Fully calibrated

The sensor is shipped as a fully calibrated product

without requiring any customer end-of-line

calibration.

Nevertheless, the high configurability enables

individual customization for a wide variety of

applications. All user-programmable parameters

such as OCD thresholds, blanking times and output

configuration modes are stored in an embedded

EEPROM memory. Programming of the memory can

be performed in the application through a Serial

Inspection and Configuration Interface (SICI).

Coreless current sensor in PG-TISON-8 package

Order Information

Ordering

Number

Product Name

Product Type

Package

TLI4971-A120T5-U-E0001 120A measurement range, UL certified device ¹⁾²⁾

PG-TISON-8 SP005272936

TLI4971-A120T5-E0001

120A measurement range ¹⁾²⁾

PG-TISON-8 SP005344532

1) Current sensor for industrial / consumer applications, qualified according to AEC Q100 grade 2

2) Semi-differential mode, non-ratiometric output sensitivity

Datasheet

www.infineon.com

Please read the Important Notice and Warnings at the end of this document

Revision 1.1

09-03-2020

TLI4971

Datasheet

Pin Configuration

Pin configuration

I_PN

Pin No. Symbol Function

VDD

GND Ground

Reference voltage input or

output

Supply voltage

VREF

AOUT Analog signal output

Over-current detection

OCD1 output 1 (open drain

output)

Over-current detection

OCD2 output 2 (open drain

output)

Figure 1 Pin layout PG-TISON-8-5

The current I_PNis measured as a positive value

when it flows from pin 8 (+) to pin 7 (-) through the

integrated current rail.

Negative current terminal

pin (current-out)

IP-

Positive current terminal

pin (current-in)

IP+

Target Applications

The TLI4971 is suitable for AC as well as DC current measurement applications:



Electrical drives

Current monitoring

Photovoltaic & general purpose inverters

Overload and over-current detection

Chargers

etc.

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.

Datasheet

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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 filter settings and output

configuration mode are stored in an embedded EEPROM memory.

Programming of the memory can be performed in the application through a Serial Inspection and

Configuration Interface (SICI). The interface is descripded in detail in the programming guide which can be

found on the Infineon webside. Please contact your local Infineon sales office for further documentation.

Standard Product Configuration



The pre-configured full scale range is set to ±120A with a sensitivity of 10mV/A.

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 1.68 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 0s.

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

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TLI4971

Datasheet

Block Diagram

The current flowing through the current rail on the primary side induces a magnetic field, that 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 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.

VDD

GND

Infrastructure

(power, clk, references)

IP+

Integrated

current rail

Bias signal for EEPROM

Diagnosis Mode

OCD1

OCD2

References

Differential

Hall plate

Diff.

Hall

Signal

Conditioning

AOUT

VREF

Temp

Stress

MUX

Output

Offset

IP-

Figure 2 Block Diagram

Datasheet

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TLI4971

Datasheet

Absolute Maximum Ratings

Table 1 Absolute Maximum Ratings

General conditions (unless otherwise specified): V_DD= 3.3V; T_S= -40°C … +105°C

Note /

Test Condition

Parameter

Symbol Min Typ

Max

Unit

Supply voltage

V_DD

-0.3

3.3

3.6

Peak, frequency < 10Hz.

Primary nominal rated

current LF¹⁾

Tested on Infinenon reference

PCB (see related application

note: AppNote TLI4971 PCB)

RMS, frequency ≥ 10Hz.

I_PNRLF

-70

Primary nominal rated

current HF²⁾

Tested on Infinenon reference

PCB (see related application

note: AppNote TLI4971 PCB)

I_PNRHF

-70

Single peak for 10µs,

10 assertions per lifetime

Primary current

I_PNS

-250

250

Voltage on interface pins

VREF, OCD1, AOUT

V_IO

-0.3

V_DD+ 0.3

Voltage on Interface pin

OCD2

V_{IO_OCD2}

ESD voltage³⁾

ESD voltage⁴⁾

Voltage slew-rate on

current rail

Maximum junction

temperature

Storage temperature

V_{ESD_HBM}

V_{ESD_SYS}

-2

-16

In the application circuit

Considering continuous

ΔV/dt

V/ns

T_{j_max}

130

°C

T_{A_STORE}

-40

Life time

Years operation with T_S= 70°C

and I = 30 A RMS

1) Tested with primary nominal rated current of 70A peak on Infineon reference PCB at Low Frequency (LF).

Thermal equilibrium reached after 2 min.

2) Tested with primary nominal rated current of 70A rms on Infineon reference PCB at High Frequency (HF).

Thermal equilibrium reached after 2 min.

3) Human Body Model (HBM), according to standard AEC-Q 100-002

4) 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

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Datasheet

Product Characteristics

Table 2 Operating Ranges

General conditions (unless otherwise specified): V_DD= 3.3V; T_S= -40°C … +105°C

Parameter

Symbol Min. Typ.

Max.

Unit Note / Test Condition

Supply voltage

V_DD

3.1

3.3

3.5

Ambient temperature at

soldering point

Measured at

soldering point

T_S

-40

105

°C

Capacitance on analog

output pin

Capacitor on VDD

W/o decoupling resistor, including

parasitic cap on the board

C_O

4.7

6.8

C_VDD

220

Default value is

semi-differential mode.

Other values available by EEPROM:

Reference input voltage

V_REF

1.65

1.2V, 1.5V, 1.8V

Reference input voltage

variation

V_{REF_var}

-10

EEPROM programming

voltage

V_{IO_PRG}20.5

20.7

Table 3 Operating Parameters

General conditions (unless otherwise specified): V_DD= 3.3V; T_S= -40°C … +105°C

Parameter

Symbol Min. Typ.

Max.

Unit Note / Test Condition

Current consumption

I_DD

mA I(AOUT) = 0mA

25°C, when soldered on PCB with

140µm copper thickness

Primary path resistance

R_PN

225

µΩ

From V_DDrising above V_DD(min) to full

operation. Output with lower accuracy is

available within 0.5 ms.

Power-on delay time

t_POR

1.5

0A primary input current.

Voltage on interface pin

OCD1

Voltage on interface pin

OCD2

Voltage on analog output

AOUT

V_{IO_OCD1}-0.3

V_{IO_OCD2}-0.3

3.5

In functional mode

V_DDat rising edge

V_AOUT

-0.3

V_DD+ 0.3

Supply undervoltage

lockout threshold

U_{VLOH_R}

Supply undervoltage

lockout threshold

U_{VLOH_F}

2.5

V_DDat falling edge

V_DDat rising edge

Supply overvoltage

lockout threshold

OCD undervoltage

detection limit

Undervoltage/overvoltage

lockout delay

O_VLOH

V_DD,OCD

t_UVLOe

3.55

1.8

For V_DD<V_DD,OCDundervoltage may not be

performed.

2.4

µs Enabled to disabled

Current rail to soldering point, on Infineon

reference PCB (see related application note

AppNote TLI4971 PCB)

Thermal resistance¹⁾

R_THJS

0.6

K/W

1) Not tested in production. Proven by design and characterization.

Datasheet

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TLI4971

Datasheet

Functional Output Description

The analog output signal depends on the selected

output mode:

The sensitivity in the fully-differential mode can be

generally expressed as:



Single-ended

Fully-differential

Semi-differential

In this mode, the quiescent voltages and the

sensitivity are both ratiometric with respect to V_DD

if ratiometricity is enabled.

Single-Ended Output Mode

In single-ended mode VREF is used as an input pin

to provide the analog reference voltage, V_REF. The

voltage on AOUT, V_AOUT, is proportional to the

measured current I_PNat the current rail:

Semi-Differential Output Mode

In semi-differential output mode, the sensor is

using a chip-internal reference voltage to generate

the quiescent voltage that is available on pin VREF

(used as output).

The analog measurement result is available as

single-ended output signal on AOUT. The

dependence of sensitivity and output offset on

reference voltage is the same as described in single-

ended output mode.

The quiescent voltage V_OQis the value of V_AOUTwhen

I_PN=0. V_OQtracks the voltage on VREF

The reference voltage can be set to different values

which allow either bidirectional or uniderictional

current sensing. The possible values of V_REFNOMare

indicated in Table 2.

The quiescent voltage is programmable at 3

different values, V_{OQbid_1}and V_{OQbid_2}for

bidirectional current and V_OQunifor unidirectional

current (see Table 4).

The sensitivity is by default non ratiometric to V_REF.

If ratiometricity is activated the sensitivity becomes

as follows:

Total error distribution

Figure 3 shows the total output error at 0h (E_TOTT

)

and over lifetime (E_TOTL) over the full scale range for

sensitivity range S1 (10mV/A).

Fully-Differential Output Mode

Current [%FS]

-100 -75 -50 -25

25 50 75 100

In fully-differential output mode, both VREF and

AOUT are analog outputs to achieve double voltage

swing: AOUT is the non-inverting output, while

VREF is the inverting output:

3.5

2.5

Lifetime error

Temperature error

Initial error

1.5

0.5

-0.5

-1

-1.5

-2

-2.5

-3

The quiescent voltage is derived from the supply

pins VDD and GND and has the same value on both

AOUT and VREF:

-3.5

Figure 3 Distribution of max. total error in S1 range

Datasheet

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TLI4971

Datasheet

Table 4 Analog Output Characteristics

General conditions (unless otherwise specified): V_DD= 3.3V; T_S= -40°C … +105°C

Note / Test

conditions

Parameter

Symbol Min

Typ

Max

Unit

I_PN= 0A; fully-

differential or semi-

differential

(bidirectional) modes,

standard setting

I_PN= 0A; semi-

differential

Quiescent output voltage

(bidirectional option 1)¹⁾²⁾

V_{OQbid_1}

V_DD/2

Quiescent output voltage

(bidirectional option 2)²⁾

(bidirectional) mode;

for this option the

ratiometricity offset is

disabled

I_PN= 0A; semi-

differential

V_{OQbid_2}

1.5

Quiescent output voltage

(unidirectional mode)²⁾

V_OQuni

V_DD/5.5

(unidirectional) mode

Sensitivity, range1¹⁾²⁾³⁾

Sensitivity, range2²⁾³⁾

Sensitivity, range3²⁾³⁾

Sensitivity, range4²⁾³⁾

Sensitivity, range5²⁾³⁾

Sensitivity, range6²⁾³⁾

Sensitivity ratiometry factor

Quiescent ratiometry factor

K_S

mV/A ±120A FS (Full Scale)

mV/A ±100A FS

mV/A ±75A FS

mV/A ±50A FS

mV/A ±37.5A FS

mV/A ±25A FS

K_OQ

Analog output drive

capability

I_O

-2

DC current

V_DD-V_AOUT

Output

current = 2mA

-3dB criterion,

C_O= 6.8nF

;

Analog output saturation

voltage

V_SAT

150

300

Transfer function cutoff

frequency

Output phase delay⁴⁾

120

240

kHz

φ_delay

f_signal= 120kHz

Referenced to Input

current, typical value is

at 25°C. Higher noise

is present at higher

temperatures.

Output Noise density⁵⁾⁶⁾

I_NOISE

350

µA/√Hz

Frequency up to

150kHz. Up to 20mT

homogeneous field

applied

External Homogenous

B_SR

magnetic field suppression⁴⁾

1) Pre-configured setting, for other pre-configured versions please contact your local sales.

2) Can be programmed by user.

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 tested in production. Proven by design, characterization and qualification.

5) Typical value in fully-differential mode, sensitivity range S6

Datasheet

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Datasheet

Table 4 Analog Output Characteristics (cont’d)

General conditions (unless otherwise specified): V_DD= 3.3V; T_S= -40°C … +105°C

Parameter

Symbol Min

Typ

Max

Unit Note / Test conditions

Sensitivity error

E_SENS

-2

@ T_S= 25°C, at 0h

Sensitivity error over

temperature

E_SENST

-2.5

2.5

At 0h

Sensitivity error over

E_SENSL

E_OFF

-3

temperature and lifetime⁴⁾

Output offset

-300

-500

300

500

@ T_S= 25°C, at 0h

Output offset over

E_{OFF_L}

temperature and lifetime⁴⁾

Percentage of FS,

sensitivity S1; includes

sensitivity, offset and

linearity error @ T_S=25°C

at 0h

Total error

E_TOT

-2.25

2.25

Percentage of FS,

sensitivity S1; includes

sensitivity, offset and

linearity error at 0h

Percentage of FS,

sensitivity S1; includes

sensitivity, offset and

linearity error

Total error over

temperature

E_TOTT

-2.95

-3.45

2.95

3.45

Total error over

E_TOTL

temperature and lifetime⁴⁾

4) Not tested in production. Proven by design, characterization and qualification.

Datasheet

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TLI4971

Datasheet

OCD thresholds

Fast Over-Current Detection

(OCD)

The symmetric threshold level of the OCD outputs

is adjustable and triggers an over-current event in

case of a positive or negative over-current. The

possible threshold levels are listed in Table 6 and

Table 7. The instruction for the settings is

documented in the TLI4971 programming guide.

The Over-Current Detection (OCD) function allows

fast detection of over-current events. The raw

analog output of the Hall probes is fed directly into

comparators with programmable switching

thresholds. A user programmable deglitch filter is

implemented to enable the suppression of fast

switching transients. The two different open-drain

OCD pins are active low and can be directly

combined into a wired-AND configuration on board

level to have a general over-current detection

signal. TLI4971 supports two independent

programmable OCD outputs, suited for different

application needs.

OCD outputs timing behavior

Both output pins feature a deglitch filter to avoid

false triggers by noise spikes on the current rail.

Deglitch filter settings can be programmed

according to application needs. Available options

are listed in Table 6 and Table 7.

Figure 4 shows the OCD output pin typical behavior

during an over-current event.

The OCD pins are providing a very fast response,

thanks to independence from the main signal path.

They can be used as a trap functionality to quickly

shut down the current source as well as for precise

detection of soft overload conditions.

Over-current Pulse 1: duration exceeds the over-

current response time t_{D_OCDx}+ response time jitter

Δt_{D_OCDx}+ deglitch filter time t_deglitch. The OCD output

voltage is set low until the current value drops

below the OCD threshold.

OCD pins external connection

The OCD pins can be connected to a logic input pin

of the microcontroller and/or the pre-driver to

quickly react to over-current events. They are

designed as open-drain outputs to easily setup a

wired-AND configuration and allow monitoring of

several current sensors outputs via only one

microcontroller pin.

Over-current Pulse 2: duration does not exceed the

over-current response time t_{D_OCDx}and therefore no

OCD event is generated.

Over-current Pulse 3: duration exceeds the

response time t_{D_OCDx}+ response time jitter Δt_{D_OCDx}

but does not exceed the glitch filter time t_deglitchand

no OCD event is generated.

I_rail

2 x I_THR

I_THR

Glitch

counter

threshold

Δt_{D_OCDx}

V_OCD

V_DD

0.5 x V_DD

t_{D_OCDx}

t_deglitch

t_{D_OCDx}

t_deglitch

Δt_{D_OCDx}

t_OC< (t_{D_OCDx}+ Δt_{D_OCDx}

)

t_OC< (t_{D_OCDx}+ Δt_{D_OCDx}+ t_deglitch

)

Figure 4 Fast over-current detection output timing

Datasheet

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TLI4971

Datasheet

Fast Over-Current Detection (OCD) Output Parameters

Table 5 Common OCD Parameters

General conditions (unless otherwise specified): V_DD= 3.3V; T_S= -40°C … +105°C, C_L=1nF.

Parameter

Threshold level tolerance¹⁾

Symbol

Min

Typ

Max

Unit

Note / Test Conditions

I_THT

-10

At 3σ, I_rail=2xI_THRx.x, input

rise time 0.1µs

Response time jitter¹⁾

Δt_{D_OCD}

0.25

µs

Deglitch filter basic time

Detection minimum time

Load capacitance

t_OCDgl

t_{OCD_low}

C_L

400

500

600

µs

Valid for both OCDs

Open-drain current

Pull-up resistor

I_{OD_ON}

R_PU

kΩ

DC current

4.7

To V_DD

1) Not tested in production. Proven by design, characterization and qualification

Table 6 OCD1 Parameters

Parameter

Symbol

I_THR1.1

I_THR1.2

I_THR1.3

I_THR1.4

I_THR1.5

I_THR1.6

I_THR1.7

I_THR1.8

t_{D_OCD1}

t_{f_OCD1}

Min

Typ

1.25

1.39

1.54

1.68

1.82

1.96

2.11

2.25

0.7

Max

Unit

x I_FS

µs

Note / Test Conditions

Factor with respect to I_FS

I_PN= 2*I_THR1.x

Threshold level - Level1¹⁾²⁾

Threshold level - Level2¹⁾²⁾

Threshold level - Level3¹⁾²⁾

Threshold level - Level4¹⁾²⁾³⁾

Threshold level - Level5¹⁾²⁾

Threshold level - Level6¹⁾²⁾

Threshold level - Level7¹⁾²⁾

Threshold level - Level8¹⁾²⁾

Response time⁴⁾

Fall time⁵⁾

100

150

t_deglitch= OCD1_{gl_mul}*t_OCDgl

pre-configured setting = 0

Deglitch filter setting²⁾⁶⁾

OCD1_{gl_mul}

1) Symmetric threshold level for positive and negative currents.

2) Can be programmed by user.

3) Pre-configured threshold level

4) Falling edge level of OCD1-pin < 0.5 x V_DD

5) Not tested in production. Proven by design, characterization and qualification.

6) The specified deglitching timing is valid when input current step overtakes the threshold of at least 10%.

Datasheet

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TLI4971

Datasheet

Table 7 OCD2 Parameters

Parameter

Symbol

I_THR2.1

I_THR2.2

I_THR2.3

I_THR2.4

I_THR2.5

I_THR2.6

I_THR2.7

I_THR2.8

t_{D_OCD2}

t_{f_OCD2}

Min

Typ

0.5

Max

Unit

x I_FSR

µs

Note / Test Conditions

Factor with respect to I_FS

I_PN= 2 x I_THR2.x

Threshold level - level1¹⁾²⁾

Threshold level - level2¹⁾²⁾

Threshold level - level3¹⁾²⁾

Threshold level - level4¹⁾²⁾³⁾

Threshold level - level5¹⁾²⁾

Threshold level - level6¹⁾²⁾

Threshold level - level7¹⁾²⁾

Threshold level - level8¹⁾²⁾

Response time⁴⁾

0.61

0.71

0.82

0.93

1.04

1.14

1.25

0.7

1.2

300

Fall time⁵⁾

200

t_deglitch= OCD2_{gl_mul}x t_OCDgl

pre-configured setting = 0

Deglitch filter setting²⁾⁶⁾

OCD2_{gl_mul}

1) Symmetric threshold level for positive and negative currents.

2) Can be programmed by user.

3) Pre-configured threshold level.

4) Falling edge level of OCD2-pin < 0.5 x V_DD

5) Not tested in production. Proven by design, characterization and qualification.

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 (V_DD). When an undervoltage

(V_DD<U_VLOH) or overvoltage (V_DD>O_VLOH) 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 V_DD> V_DD,OCD

Both OCD pins are pulled down at start up. When V_DDexceeds the undervoltage threshold U_{VLOH_R}and the power on

delay time t_PORhas been reached, the sensor indicates the correct functionality and high accuracy by releasing the

OCD pins.

Datasheet

Revision 1.1

09-03-2020

TLI4971

Datasheet

Isolation Characteristics

TLI4971 conforms functional isolation.

Table 8 Isolation Characteristics

Parameter

Symbol

Min

Typ Max

Unit Note / Test Conditions

Maximum rated working

voltage (sine wave)¹⁾²⁾³⁾

V_IOWM

V_IOWMP

V_IORM

690

975

1150

RMS, @ 4000m altitude

Peak, @ 4000m altitude

Maximum rated working

voltage (sine wave)¹⁾²⁾³⁾

Maximum repetitive

isolation voltage²⁾³⁾

Max DC voltage, spike,

@ 4000m altitude

Apparent charge voltage

capability (method B)²⁾³⁾

Partial discharge < 5pC peak

@ 0m altitude

V_PDtest

1500

Isolation test voltage³⁾⁴⁾

V_ISO

2500

3000

RMS, 60s

RMS, in production,

V_ISOP

1.2s, UL certified version

RMS, in production, 600ms,

Non-UL certified version

Peak, rise time = 1.2µs,

fall time = 50µs

Isolation production test

voltage

V_ISOP

V_pulse

CPG

CLR

2470

4500

Isolation pulse test voltage³⁾

Minimum external creepage

distance

Minimum external clearance

distance

Minimum comparative

tracking index

Isolation resistance³⁾

Material

group II

CTI

R_IO

GΩ

U_IO= 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

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09-03-2020

TLI4971

Datasheet

System integration

V_{CC_IO}

V_DCLink

IP+

IP-

Load

V_Sens

PWM

TLI4971

VDD

GND

Gate-

Driver

220nF

25V

µC

PGND

V_{CC_IO}

V_AREF

VAREF

4k7Ω 4k7Ω

1kΩ

1nF

25V

1nF

50V

GPIO

220nF

25V

6.8nF

25V

1kΩ

220Ω

A/D

15nF 15nF 15nF

25V 25V 25V

6.8nF 6.8nF 6.8nF

25V 25V 25V

Optional low pass filter for bandwidth limitation fc = 48.2kHz

Figure 5 Application circuit for three phase system in single-ended configuration

V_{CC_IO}

V_DCLink

IP-

IP+

Load

V_Sens

PWM

_VDDTLI4971

Gate-

Driver

220nF

25V

GND

µC

PGND

V_{CC_IO}V_{CC_IO}

V_AREF

VAREF

GPIO

4k7Ω 4k7Ω

1nF

25V

1nF

50V

220Ω

A/D

6.8nF 6.8nF 6.8nF 6.8nF 6.8nF 6.8nF

25V 25V 25V 25V 25V 25V

15nF 15nF 15nF 15nF 15nF 15nF

25V 25V 25V 25V 25V 25V

Optional low pass filter for bandwidth limitation fc = 48.2kHz

Figure 6 Application circuit for three phase system in differential configuration

Datasheet

Revision 1.1

09-03-2020

TLI4971

Datasheet

V_{CC_IO}

V_Sens

VDD

VCC

220nF

GND

4k7Ω 4k7Ω

GND

µC

TLI4971

220Ω

A/D_in

INTN

VREF

AOUT

OCD1

OCD2

6.8nF 6.8nF 1nF

25V 25V 25V 50V

1nF

15nF

25V

15nF

25V

Optional low pass filter

for bandwidth limitation fc = 48.2kHz

Figure 7 Application circuit with external components

For bandwidth limitation an external filter is recommended as shown in the above application circuits.

Datasheet

Revision 1.1

09-03-2020

TLI4971

Datasheet

Package

The TLI4971 is packaged in a RoHS compliant, halogen-free leadless package (QFN-like).

PG-TISON-8 Package Outline

4.83

0.1

4.83

0.6

2.32

0.6

0.1 A

2.32

0.30

0.1

0.25

0.30

0.25

1.0

1.4

8 x

1.0

0.1 M A

INDEX MARKING

1.1 MAX.

0.4

2.26

R0.20

R0.30

R0.20

R0.30

0.60

Figure 8 PG-TISON-8 package dimensions

Datasheet

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TLI4971

Datasheet

This page is left intentionally blank.

Datasheet

Revision 1.1

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TLI4971

Datasheet

Revision History

Major changes since the last revision

Date

Description of change

10-02-2020 Initial version

09-03-2020 Pre-configured OCD threshold levels changed / Page3, Table 6 and Table 7

Standard Product Configuration updated on Page 3 / OCD settings according to Table 6 and Table 7

Updated Table 8, isolation characteristics

Updated application circuits

Editorial changes

Revision update 1.1

Datasheet

Revision 1.1

09-03-2020

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Edition 09-03-2020

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Published by

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contact your nearest Infineon Technologies office

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Document reference

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The data contained in this document is exclusively

intended for technically trained staff. It is the

responsibility of customer’s technical departments

to evaluate the suitability of the product for the

intended application and the completeness of the

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respect to such application.

TLI4971 [INFINEON]

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