TLE7189F Infineon Technologies, TLE7189F Datasheet - Page 22

• Manufacturer Part Number: TLE7189F
• Description: IC DRIVER 3PH BRIDGE 48-VQFN
• Manufacturer: Infineon Technologies
• Type: High Side/Low Sider

Specifications of TLE7189F

• Applications: DC Motor Driver, 3 Phase
• Number Of Outputs: 1
• Voltage - Supply: 5.5 V ~ 28 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 48-VFQFN
• Rise Time: 400 ns
• Fall Time: 230 ns
• Supply Voltage (min): 5.5 V
• Supply Current: 110 mA
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Bridge Type: 3-Phase Bridge
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 3
• Packages: PG-VQFN-48
• Operating Range: 5.5 - 28.0 V
• Iq: 30 ?A
• Turn On/off Current: 1.5/ 1.5 A
• D.c.-range @ 20khz: 0...100%
• Numbers Of Integrated Opamps For Load Current Measurement: 3.0
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SP000248208; TLE7189F; TLE7189FINTR

5.3
The TLE7189F incorporates three fast and precise operational amplifiers for conditioning and amplification of the
shunt signals sensed in the three phases. Additionally, one reference bias buffer is integrated to provide an
adjustable bias reference for the three OpAmps. The voltage divider on the VRI pin should be less than 50 k , the
filtering capacitor less than 1.2 µF - if needed at all. The gain of the OpAmps is adjustable by external resistors
within a range of 3 to 20 or more, as long as the band width satisfies the need of the application.
In the circuit example below VO1 provides the reference voltage
normally half of the regulated voltage provided from an external voltage regulator for the ADC used to read the
current sense signal. The additional buffer allows bi-directional current sensing and permits the adaptation of the
reference bias to different µC I/O voltages. The reference buffer assures a stable reference voltage even in the
high frequency range.
The reference bias buffer is used for all of the OpAmps. The OpAmps of the TLE7189F demonstrate low offset
voltages and very little drift over temperature, thus allowing accurate phase current measurements.
Figure 4
Data Sheet
Shunt Signal Conditioning
Shunt Signal Conditioning Block Diagram
requirements additional
TLE7189
customer specific
Dependent on
filtering can be
necessary
C
R
VRI
VRI
< 1.2 µF (if needed)
< 50 kOhm
VO3
1k
to ADCs
VO2
1k
VO1
Reference
+
22
-
Bias
I-DC Link
OpAmp1
I-DC Link
OpAmp2
I-DC Link
OpAmp3
+
+
+
-
-
-
V
VRO
ISN2
ISP1
ISN1
ISP2
VRI
Rfb
ISP3
ISN3
VRO
Rfb
, when the shunt voltage is zero.
Rfb
R
R
VRI
VRI
Rfb
Rs
Rs
Rs
Rs
3.3V
C
Rs
Rs
VRI
Adjustable
reference
bias
Shunt
Rev. 2.1, 2007-05-30
TLE7189F
V
VRO
is