AUTOMOTIVE CURRENT TRANSDUCER
HAH1DR 300-S
Principle of HAH1DR Family
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).
The open loop transducers uses a Hall effect integrated circuit.
The magnetic flux density B, contributing to the rise of the
Hall voltage, is generated by the primary current IP to be
measured.
The current to be measured IP 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 (IP) = constant (a) x IP
Features
The Hall voltage is thus expressed by:
●● Open Loop transducer using the Hall effect
●● Unipolar + 5 V DC power supply
●● Primary current measuring range up to ± 300 A
●● Maximum RMS primary current limited by the busbar, the
magnetic core or the ASIC temperature T° < + 150°C
●● Operating temperature range: - 40°C < T° < + 125°C
●● Output voltage: full ratiometric (in sensitivity and offset)
●● Compact design.
VH= (RH/d) x I x constant (a) x IP
Except for IP, all terms of this equation are constant.
Therefore:
VH = constant (b) x IP
The measurement signal VH amplified to supply the user output
voltage or current.
Advantages
●● Excellent accuracy
+Vc
●● Very good linearity
●● Very low thermal offset drift
●● Very low thermal sensitivity drift
IP
Vout
●● Wide frequency bandwidth
-Vc
●● No insertion losses.
0V
Automotive applications
●●
●●
●●
●●
●●
Battery monitoring
Starter Generators
Inverters
HEV application
EV application.
Primary current I
P
Isolated output voltage
Fig. 1: Principle of the open loop transducer
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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HAH1DR 300-S
Dimensions HAH1DR family (in mm.)
Bill of materials
System architecture (example)
●● Plastic case
PBT GF 30
●● Magnetic core
Iron silicon alloy
●● Pins
Brass tin plated
Mass
38 g
Remarks
●● VOUT >
VC
2
when IP flows in the direction of the arrow.
System architecture
RL > 10 kW optional resistor for signal line diagnostic
VOUT
Diagnosis
Open circuit
VIN = VC
Short GND
VIN = OV
CL < 100 nF EMC protection
RC Low pass filter EMC protection (optional)
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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HAH1DR 300-S
Absolute maximum ratings
Symbol
Unit
Specification
Min
Typ
Conditions
Max
Electrical Data
IPmax
Max primary current peak
Supply continuous over voltage
1)
7
VC
V
Output over voltage (continuous)
VOUT
V
-0.5
VC + 0.5
Continuous output current
-10
10
Reverse voltage 2)
IOUT
mA
Output short-circuit duration
tc
min
2
Rms voltage for AC isolation test
Vd
kV
2
Isolation resistance
RIS
MΩ
Electrostatic discharge voltage
VESD
kV
TS
°C
Symbol
Unit
IP
A
-300
Calibration current
ICAL
A
-300
Supply voltage
VC
V
4.75
Ambient storage temperature
No operating
1 min @ TA = 25°C
-0.5
500
50 Hz, 1 min
500 V - ISO 16750-2
2
-55
JESD22-A114-B
125
Operating characteristics
Specification
Min
Typ
Conditions
Max
Electrical Data
Primary current
300
300
5.00
VOUT
V
VOUT = (VC/5) X (2.5 + G X IP)
G
mV/A
6.67
Current consumption
IC
mA
Load resistance
RL
kΩ
Output voltage (Analog) 3)
Sensitivity 3)
15
@ VC
@ VC = 5 V
20
@ VC = 5 V, @ - 40°C < T° < 125°C
10
DC to 1 kHz
10
ROUT
Ω
CL
nF
1
Ambient operating temperature
TA
°C
-40
Output drift versus power supply
VOUT PS
%
εG
%
Output internal resistance
Capacitive loading
@ TA = 25°C
5.25
100
125
Connector limited 105°C
1.0
@ TA = 25°C @ I = IP
0.5
Performance Data
Sensitivity error
Electrical offset current
IOE
Magnetic offset current
IOM
Average temperature coefficient of VOE
Average temperature coefficient of G
Response time to 90 % of IPN step
Frequency bandwidth 4)
Output clamping voltage min
Output clamping voltage max
Output voltage noise peak-peak
@ TA = 25°C, @ VC = 5 V
@ TA = 25°C, @ VC = 5 V, after ± IP
±1
2.1
@ TA = 25°C
TCVOE AV
mV/°C
-0.08
± 0.03
0.08
@ - 40°C < T° < 125°C
TCG AV
%/°C
-0.035
± 0.02
0.035
%
-1
εL
Linearity error
± 0.5
± 0.8
A
IO
Global offset current
-1.0
-2.1
tr
µs
6
BW
kHz
30
Vsz
V
Vno pp
mV
@ - 40°C < T° < 125°C
1
@ VC = 5 V @, TA = 25°C, @ I = IP
10
@ di/dt = 100 A/µs
@ -3 dB
0.1
@ VC = 5 V, TA = 25°C
20
DC to 1MHz
@ VC = 5 V, TA = 25°C
4.9
Notes: 1)Busbar temperature must be below 150°C
2)
Transducer not protected against reverse polarity.
3)
The output voltage VOUT is fully ratiometric. The offset and sensitivity are dependent on the supply voltage VC
relative to the following formula:
VC  1
5

IP =  VOUT −
× ×
G
V
2
C


4)
with G in ( V / A )
Tested with small signals only to avoid excessive heating of the magnetic core.
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
HAH1DR 300-S
HAH1DR 300 Electrical offset Error (A)
HAH1DR 300 Sensitivity Error (%)
3
5
4
2
3
2
1
1
0
0
-1
-1
-2
-3
-2
-4
-5
-40
-20
0
20
40
60
80
100
-3
-40
120
-20
0
20
HAH1DR 300 Frequency Bandwith
60
80
100
120
HAH1DR 300 Phase
0
0
100
-1
-10
-2
-20
-3
-30
Phase (°)
Gain (dB)
40
Temperature (°C)
Temperature (°C)
-4
-5
1000
10000
100000
-40
-50
-60
-6
-70
-7
-80
-8
100
1000
10000
-90
100000
Frequency (Hz)
Frequency (Hz)
Typical response time at 100 A/µs
Channel 1 (yellow) : Primary current
Channel 2 (Red) :
Output voltage signal
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HAH1DR 300-S
PERFORMANCES PARAMETERS DEFINITIONS
Sensitivity:
Output noise voltage:
The output voltage noise is the result of the noise floor of the The Transducer’s sensitivity G is the slope of the straight line
Vout = f (IP), it must establish the relation:
Hall elements and the linear IC amplifier gain.
Vout (IP) = VC/5 (G x IP + 2.5) (*)
Magnetic offset:
(*) For all symetrics transducers.
The magnetic offset is the consequence of an over-current on
Offset with temperature:
the primary side. It’s defined after an excursion of IP max.
The error of the offset in the operating temperature is the variation
Linearity:
of the offset in the temperature considered with the initial offset
The maximum positive or negative discrepancy with a reference at 25°C.
straight line VOUT = f (IP).
The offset variation IOT is a maximum variation the offset in the
Unit: linearity (%) expressed with full scale of IP max.
temperature range:
Linearity is measured on cycle + IP, O, - IP, O, + IP without
IOT = IOE max - IOE min
magnetic offset (average values used)
The Offset drift TCIOEAV is the IOT value divided by the temperature
range.
VOUT
Non linearity example
Reference
straight line
Max linearity error
IP
Linearity variation in IN %
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 25°C.
The sensitivity variation GT is the maximum variation (in ppm or
%) of the sensitivity in the temperature range:
GT = (Sensitivity max - Sensitivity min) / Sensitivity at 25°C.
The sensitivity drift TCGAV is the GT value divided by the
temperature range.
Offset voltage @ IP = 0 A:
Is the output voltage when the primary current is null. The ideal
value of VO is VC/2 at VC = 5 V. So, the difference of VO -VC/2
is called the total offset voltage error. This offset error can be
Response time (delay time) tr:
The time between the primary current signal and the output attributed to the electrical offset (due to the resolution of the ASIC
quiescent voltage trimming), the magnetic offset, the thermal drift
signal reach at 90 % of its final value
and the thermal hysteresis.
I [A]
Environmental test specifications
IT
Name
Standard
Damp heat, steady state
JESD22-A101
90 %
IS
IP
Isolation resistance
tr
ISO 16750-2 § 4.10
Conditions
85°C - 85°C / 1000h
500 V/1min
Temperature humidity
cycle test
ISO 16750-4
-10 + 85°C 10 days
Isolation test
IEC 60664-1
2 kV/50 Hz/1min
Mechanical tests
Vibration test (random)
t [µs]
Typical:
Theorical value or usual accuracy recorded during the
production.
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 + 125°C 300 cycles
Free fall
ISO 16750-3 § 4.3
1m concrete ground
EMC Test
Radiated electronagnetic
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-60mA
Radiated radio frequency
electromagnetic field
immunity
IEC 61000-4-3
80 MHz to 1,000 MHz-10V/m
Electrostatic discharge
immunity test
IEC 61000-4-2
Air discharge=2 kV
Page 5/5
110419/2
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com