TLE8242-2 Datasheet, PDF (59/78 Pages) Infineon Technologies AG – 8 Channel Fixed Frequency Constant Current Control With Current Profile Detection

Field
MAX
MIN
Bits
21:11
10:0
Type
DATA
DATA
TLE8242-2
Functional Description and Electrical Characteristics
Description
The largest summation of “M” A/D samples (within one PWM
period) during the previous dither cycle. The 11 most significant
bits are reported.
Note: return value will be 0 until the first dither cycle is completed -
(RESET Value = 0)
The smallest summation of “M” A/D samples (within one PWM
period) during the previous dither cycle. The 11 most significant
bits are reported.
Note: return value will be 2047until the first dither cycle is completed
- (RESET Value = 2047)
Max Current Feedback[mA] = ^MAX ∗ ^320[mV]
2¹¹ Rsense[Ohm]
Equation: Maximum Dither Current Feedback
(9)
Min
Current
Feedback
[mA] =
MIN
2¹¹
∗
320[mV]
Rsense[Ohm]
Equation: Minimum Dither Current Feedback
(10)
Note: When the selected channel is different than the previously selected channel (the last time this message was
addressed), the new Min and Max data will be available after no more than two dither cycles. When the selected
channel is the same as the previously selected channel, the new Min and Max data will be available in no more
than one dither cycle.
Note: When M=512 in Direct PWM mode, the following formula applies. The application software must ensure that
the register has not overflowed.
Min / Max Current Feedback [mA ] = ^{MIN or MAX} ∗ ^{320 [mV]}
2¹³
Rsense [Ohm]
Equation: Min/Max Dither Current Feedback M=512
(11)
Data Sheet
59
Rev. 1.0, 2010-02-09