IMC-Hall Current Sensor (Triaxis Technology)
®
MLX91206
®
Features and Benefits
Triaxis® Technology
Very high sensitivity due to Integrated
Magnetic Concentrator (IMC-Hall®)
Programmable high speed current sensor IC
Wideband: DC to 90kHz
Short response time
Programmable linear transfer characteristic
Selectable
analog ratiometric output
PWM output with 12 bit resolution
Thermometer output
17 bit ID Number
SOIC8 package RoHS compliant
Lead free component, suitable for lead free
soldering profile 260°C (target), MSL3
Application Examples
DC/AC (inverter) converter
DC/DC switched mode power supply
Battery Management
Smart fuse (over-current detection)
BLDC motor (phase current)
AC/DC Converters
Ordering Information
Product
Code
MLX91206
MLX91206
MLX91206
MLX91206
MLX91206
MLX91206
MLX91206
MLX91206
MLX91206
Temperature
Code
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
Package
Code
DC (SOIC)
DC (SOIC)
DC (SOIC)
DC (SOIC)
DC (SOIC)
DC (SOIC)
DC (SOIC)
DC (SOIC)
DC (SOIC)
Ordering
Option Code
CAL-001
CAL-002
CAL-003
CAH-001
CAH-002
CAH-003
CAH-004
(1)
CAH-021
(2)
CAH-104
Packing
form Code
Sensitivity Range
(Typ.)
460-700mV/mT (580mV/mT)
300-470mV/mT (380mV/mT)
200-310mV/mT (250mV/mT)
210-330mV/mT (270mV/mT)
130-220mV/mT (170mV/mT)
80-140mV/mT (110mV/mT)
60-110mV/mT (77.5mV/mT)
210-330mV/mT (270mV/mT)
0.5-5%DC/mT
TU (Tube) / RE (Reel)
(1)
The MLX91206 sensor is in disabledratiometry mode by default for this version
(2)
The MLX91206 sensor is in PWM mode by default for this version
Ordering example: MLX91206LDC-CAL-001-RE
1 Functional Diagram
3.3V core
TEMPOUT
3.3V
ana
Thermometer
3.3V
dig
Voltage
Regulator
&
Rev.Pol.
protection
VDIG
VDD
Oscillator
Clock
1 MHz
Generator
fs = 1MHz
fs = 1MHz
Input data rate
fi = 250kHz or 25kHz
Intermediate data rate
fo = 250 kHz or 25 kHz
Output data rate
5V ratiometric
output
VSS
4-
Phase
Switch
Box
DIDO
Integrating
P2P
LPF
S&H
Clamping
Output
Buffer
OUT
G = 15 … 239
Hall
Bias
G = 0.4 … 1
G=4
ADC
PWM Logic
DAC
3 bits
10 bits
2 bits
12 bits
6 bits
Digital
Ratiometry
MUST0
TC1ST[6:0]
TC2ND_COLD[4:0]
TC2ND_HOT[4:0]
RG[2:0]
FG[9:0]
OFFSETDRIFT_HOT[5:0]
OFFSETDRIFT_COLD[5:0]
PLATEPOL
FILTCODE[1:0] XA[11:0] CLAMPLOW[2:0]
CLAMPHIGH[2:0]
MUST1
Polarity
selection
HallSensors
selection
Sensitivity
trimming
DIGITAL + EEPROM
Rough Gain
Fine Gain
Offset
Compensation
Bandwidth
Voq adjust
TESTOUT
Figure 1: Block diagram
3901091206
Rev 043
Page 1
Datasheet MLX91206
April 2016
IMC-Hall Current Sensor (Triaxis Technology)
®
MLX91206
®
2 General Description
The MLX91206 is a monolithic sensor IC featuring the Triais® Hall technology. Conventional planar Hall
technology is only sensitive to the flux density applied orthogonally to the IC surface. The IMC-Hall® current
sensor is sensitive to the flux density applied parallel to the IC surface. This is obtained through an Integrated
Magneto-Concentrator (IMC-Hall®) which is deposited on the CMOS die (as an additional back-end step).
The IMC-Hall® current sensor is automotive qualified.
The product is a single chip Hall sensor which provides an output signal which is proportional to the flux
density applied horizontally and is therefore suitable for current measurement. It is ideally used as an open
loop current sensor for PCB mounting. (see figure 2). It features small size application design and a simple
construction for various current ranges.
The transfer characteristic of the MLX91206 is programmable (offset, gain, clamping levels, diagnostic
functions…). The output is selectable between analog and PWM. The linear analog output is used for
application where a very fast response (<10
sec)
is required, whereas the PWM output is used for
application where low speed but high output signal robustness is required.
Figure 2: Typical application of MLX91206
3901091206
Rev 043
Page 2
Datasheet MLX91206
April 2016
IMC-Hall Current Sensor (Triaxis Technology)
®
MLX91206
®
Table of Contents
1 Functional Diagram................................................................................................................................................................................ 1
2 General Description ............................................................................................................................................................................... 2
3 Glossary of Terms ................................................................................................................................................................................. 4
4 Absolute Maximum Ratings ................................................................................................................................................................... 4
5 Pin Definitions and Descriptions ............................................................................................................................................................ 4
6 General Electrical Specifications ............................................................................................................................................................ 5
7 Magnetic specification ........................................................................................................................................................................... 6
7.1 25 mT version (marking xxH) .......................................................................................................................................................... 6
7.2 10 mT version (marking xxL) ......................................................................................................................................................... 6
8 Analog output specification .................................................................................................................................................................... 7
8.1 Timing specification ........................................................................................................................................................................ 7
8.2 Accuracy specification .................................................................................................................................................................... 7
8.3 Remarks to the achievable accuracy .............................................................................................................................................. 7
9 PWM output specification ...................................................................................................................................................................... 8
9.1 Timing specification for the PWM output ......................................................................................................................................... 8
9.2 Magnetic specification for the PWM output ..................................................................................................................................... 9
9.3 Accuracy specification transfer characteristic PWM ........................................................................................................................ 9
10 Thermometer output specification ........................................................................................................................................................ 9
11 Programmable items .......................................................................................................................................................................... 10
11.1 Parameter table .......................................................................................................................................................................... 10
11.2 Output mode configuration (DSPMODE, OUTMODE) ................................................................................................................ 11
11.3 Output impedance mode (DIAGINFAULT) .................................................................................................................................. 11
11.4 Reference edge (REFEDGE) – only in PWM mode .................................................................................................................... 11
11.5 PWM/switch mode (SWITCH)..................................................................................................................................................... 11
11.6 Platepol (PLATEPOL)................................................................................................................................................................. 12
11.7 Sensitivity programming (ROUGHGAIN, FINEGAIN) .................................................................................................................. 12
11.8 Offset / output quiescent voltage programming (XA, YA) ............................................................................................................ 13
11.9 Clamping level programming (CLAMPLOW, CLAMPHIGH) ........................................................................................................ 13
11.10 Bandwidth and filter programming (FILTCODE) ........................................................................................................................ 14
11.11 Power limitation / PWM rise and fall time (OUTSLOPE)............................................................................................................ 15
11.12 PWM Mode duty cycle definition (DCDEF) ............................................................................................................................... 16
11.13 Output ratiometry (RATIODIS) .................................................................................................................................................. 16
11.14 Sensitivity and temperature drift programming (TC1ST, TC2ND_COLD, TC2ND_HOT) ........................................................... 16
11.15 Offset temperature drift programming (OFFDRIFT_COLD, OFFDRIFT_HOT) .......................................................................... 16
11.16 Product Identification (MLXID, CSTID)...................................................................................................................................... 17
12 Application information....................................................................................................................................................................... 18
12.1 Low current measurement up to ±2 A ......................................................................................................................................... 18
12.2 Medium current up to ±30 A ....................................................................................................................................................... 18
12.3 High current measurement up to ±600 A .................................................................................................................................... 18
13 Recommended Application Diagrams ................................................................................................................................................ 19
13.1 Resistor and capacitor values ..................................................................................................................................................... 19
13.2 Fast analog application, pull-down resistor for diagnostic low ..................................................................................................... 19
13.3 Fast analog application, pull-up resistor for diagnostic high ........................................................................................................ 20
13.4 Robust PWM application, (pull-up load only) .............................................................................................................................. 20
14 Standard information regarding manufacturability of Melexis products with different soldering processes .......................................... 21
15 ESD Precautions ............................................................................................................................................................................... 21
16 Package Information .......................................................................................................................................................................... 22
16.1 SOIC8 Package dimensions ....................................................................................................................................................... 22
16.2 SOIC8 Pinout and Marking ......................................................................................................................................................... 22
16.3 SOIC8 Hall plate position............................................................................................................................................................ 23
16.4 IMC Position and sensors active measurement direction ............................................................................................................ 23
17 Related documents and tools............................................................................................................................................................. 24
17.1 Related documents .................................................................................................................................................................... 24
17.2 Related software ........................................................................................................................................................................ 24
17.3 Related hardware ....................................................................................................................................................................... 24
18 Disclaimer.......................................................................................................................................................................................... 25
3901091206
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Datasheet MLX91206
April 2016
IMC-Hall Current Sensor (Triaxis Technology)
®
MLX91206
®
3 Glossary of Terms
Tesla
TC
NC
PWM
%DC
ADC
DAC
LSB
MSB
DNL
INL
IMC
PTC
Units for the magnetic flux density, 1 mT = 10 Gauss
Temperature Coefficient in ppm/deg C
Not Connected
Pulse Width Modulation
Duty Cycle of the output signal i.e. T
ON
/(T
ON
+ T
OFF
)
Analog to Digital Converter
Digital to Analog Converter
Least Significant Bit
Most Significant Bit
Differential Non Linearity
Integral Non Linearity
Integrated Magneto Concentrator (IMC)
Programming Through Connector
4 Absolute Maximum Ratings
Parameter
Positive Supply Voltage (overvoltage)
Reverse Supply Voltage Protection
Positive Output Voltage
Output Current
Reverse Output Voltage
Reverse Output Current
Operating Ambient Temperature Range
Storage Temperature Range
Magnetic Flux Density
Table 1: Absolute maximum ratings
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute maximum
rated conditions for extended periods may affect device reliability.
Symbol
Vdd
Value
+20
-10
+10
+14 (200 s max, T
A
= +25°C)
±300
-0.3
-50
-40 to +150
-55 to +165
±0.2
Units
V
V
V
mA
V
mA
°C
°C
T
Iout
T
A
T
S
5 Pin Definitions and Descriptions
Pin №
1
2
3
4
5
6
7
8
Name
VDD
VSS
VDIG
MUST1
OUT / PWM
TESTOUT
MUST0
TEMPOUT
Type
Supply
Ground
Supply
Digital
Analog/Digital
Digital
Digital
Analog
Function
Supply Voltage
Supply Voltage
Digital supply voltage, 3.3 V, internal regulated
Test and Factory calibration
Current sensor output
Test and Factory calibration
Test and Factory calibration
Temperature Sensor Output
Table 2: Pin definition and description
It is recommended to connect the unused pins to the Ground (see section 16) for optimal EMC results.
3901091206
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Datasheet MLX91206
April 2016
IMC-Hall Current Sensor (Triaxis Technology)
®
MLX91206
®
6 General Electrical Specifications
Operating Parameters : T
A
= -40 to 125degC, Vdd = 4.5 V to 5.5 V, Iout = -2 mA to +2 mA, recommended
application diagram in section 16, unless otherwise specified. All mentioned component values can have a
±20% tolerance
Parameter
Nominal Supply Voltage
Supply Current
Symbol
Vdd
Idd
Test Conditions
W/o output load & T
A
= -40 to 150
o
C
- ROUGHGAIN ≤ 3
- ROUGHGAIN > 3
-2
Vout = 50% Vdd, R
L
= 5kΩ
Analog Mode
PWM Mode
Output shorted to Vdd- Permanent
Output shorted to Vss - Permanent
High impedance mode
(2)
5
0
Min
4.5
Typ
5
7
9
Max
5.5
10
12
Units
V
mA
mA
mA
nF
nF
Output Current
Output Resistance
Output Capacitive Load
Output Short Circuit Current
Leakage current
Output Voltage Swing (Linear
Range)
High-impedance mode levels
(2)
BrokenVss Output Levels
(2)
BrokenVdd Output Levels
(2)
Under-voltage detection
(2) (4)
Over-voltage detection mode 1
(2) (4)
Iout
C
load
I
short
I
leak
2
1
5
10
50
10
50
Not Destroyed
Not Destroyed
5
95
95
3
3
uA
%Vdd
%Vdd
%Vdd
%Vdd
%Vdd
%Vdd
%Vdd
%Vdd
V
V
V
V
V
V
%Vdd
%Vdd
V
out_pd
pull down ≥ 10 kΩ
V
out_pu
pull up ≥ 10 kΩ
V
out_HiZ_pu
pull-up R
L
≤ 30 kΩ
V
out_HiZ_pd
pull-down R
L
≤ 30 kΩ
OUT with pull-down R
L
≤ 10 kΩ
(3)
OUT with pull-up R
L
≤ 30 kΩ
(3)
OUT with pull-down R
L
≤ 30 kΩ
(3)
OUT with pull-up R
L
≤ 30 kΩ
(3)
V
dd_uvd
Detected Voltage (Low to High)
V
dd_uvh
Hysteresis
V
dd_ovd1
Detected Voltage (Low to High)
V
dd_ovh1
Hysteresis
V
dd_ovd2
Detected Voltage (Low to High)
V
dd_ovh2
Hysteresis
Clamp_lo
Trimming Range
Clamp_hi
Trimming Range
5
5
97
97
3
97
3.15
0.25
7.8
0.8
6.7
0.05
5
(1)
90
3.3
0.3
3.45
0.4
9.5
1.6
7.6
0.5
10
95
(1)
Over-voltage detection mode 2
(2) (4)
Clamped Output Level
Table 3: General electrical parameter
(1)
(2)
(3)
(4)
Factory programmed clamping level
Refer to chapter
Self-diagnostic, table 21.
Valid for TEMPOUT with pull-up (min. 30kΩ), pull-down (min. 30kΩ) or not connected
According to the figure below
Vout
Hysteresis
Detected
Voltage
Vdd
Figure “Detected voltage and hysteresis definitions”
3901091206
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Datasheet MLX91206
April 2016
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