TLE7241EXT Infineon Technologies, TLE7241EXT Datasheet - Page 45

• Manufacturer Part Number: TLE7241EXT
• Manufacturer: Infineon Technologies

Specifications of TLE7241EXT

• Operating Temperature (max): 150C
• Operating Temperature (min): -40C
• Pin Count: 20
• Mounting: Surface Mount
• Screening Level: Automotive
• Lead Free Status / Rohs Status: Compliant

Error Correction
Register #
0
1
2
3
4
For example:
•
•
•
•
The contents of the error correction registers can be used by the application
microcontroller to improve the accuracy of the average switch points. In the above
example, when the microcontroller requests an average current of 200 mA (assuming a
1 Ω sense resistor), the command sent should be 0A6 (ideal) - 6 (error correction) = 0A0.
For current commands between the 5 measured operating points, the microprocessor
can use linear (or more complex) interpolation to calculate the appropriate error
correction values.
Data Sheet
Measured average switch threshold at 0A6
Ideal average switch threshold at 0A6
Error Correction = -7.4 mV / (1.2 mV/count) = -6 counts
The contents of the error correction register are -6 or FA
Corresponding Average
Current Register Setting
(Hex)
0A6
14D
1F3
29A
340
Functional Description and Electrical Characteristics
H
45
= 199.6 mV
H
during Infineon production test = 207 mV
Corresponding Ideal Average
Current with a 1 Ω ext. Sense
Resistor
200 mA
400 mA
600 mA
800 mA
1000 mA
H
Rev. 1.1, 2009-01-19
TLE 7241E