TLE7242-2G Datasheet, PDF (31/50 Pages) Infineon Technologies AG – 4 Channel Fixed Frequency Constant Current Control IC

TLE7242-2G
5.6.2.4
Dither
Functional Description and Electrical Characteristics
SPI Message #3 - Current Set Point and Dither Amplitude Set
Sent Values:
Current Set Point and Dither Amplitude Set
31 30 29 28 27 26 25 24 23 22 21
R/W
MSG_ID
CH1 CH0
EN
ON/
OFF
Reset Value: 00 00 00 00_H
20 19 18 17 16
Dither Step Size
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Dither Step Size
Dither
ON/
OFF
Current Set Point
Field
Bits
R/W
31
MSG_ID
Channel
EN
30:26
25:24
23
ON/OFF
22
Step Size 21:12
Dither
11
ON/OFF
Current
10:0
Setpoint
Type
Description
Read / Write Bit
0 = Read
1 = Write
Message Identifier
0 0011 = Current Set Point and Dither Amplitude Set
Channel Number
Sets behavior of channel when the pin ENABLE is low.
0 = channel turned off
1 = channel remains at last current set point.
Used when the channel is configured for on/off operation
0 = off
1 = on
Dither Step Size
(LSB value is 2^-4 of the Current Set point LSB)
Dither Enable
0=Disabled 1=Enabled
Average Current Set Point
Resolution = 0.78125 mA / bit when 0.2 ohm external resistor is used.
Data Sheet
31
Rev. 1.0, 2008-07-09