参数资料
型号: TLE7242-2G
厂商: INFINEON TECHNOLOGIES AG
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO28
封装: GREEN, PLASTIC, DSO-28
文件页数: 26/50页
文件大小: 1210K
代理商: TLE7242-2G
TLE7242-2G
Functional Description and Electrical Characteristics
Data Sheet
32
Rev. 1.0, 2008-07-09
Dither amplitude is the peak to peak amplitude of the dither waveform. Note: the actual dither waveform is
attenuated and phase shifted according to the frequency response of the control loop.
Dither Steps is the number of PWM periods in of the dither waveform, set in SPI message #4.
RSENSE is the value of the external sense resistor
Response:
Current Set Point and Dither Amplitude Set
Reset Value: 00 00 00 00H
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R/W
MSG_ID
CH1
CH0
EN
ON/
OFF
Dither Step Size
15
14
13
12
11
10
987
6543
210
Dither Step Size
Dither
ON/
OFF
Current Set Point
Field
Bits
Type
Description
MSG_ID
30:26
Message Identifier
0 0011 = Current Set Point and Dither Amplitude Set
Channel
25:24
Channel Number
EN
23
Sets behavior of channel when the pin ENABLE is low.
0 = channel turned off
1 = channel remains at last current set point.
ON/OFF
22
Used when the channel is configured for on/off operation
0 = off
1 = on
Step Size
21:12
Dither Step Size
(LSB value is 2-4 of the Current Set point LSB)
Dither
ON/OFF
11
Dither Enable
0=Disabled 1=Enabled
Current
Setpoint
10:0
Average Current Set Point
Resolution = 0.78125 mA / bit when 0.2 ohm external resistor is used.
SENSE
amplitude
R
s
DitherStep
Size
DitherStep
mApp
Dither
320
2
*
2
]
[
15
=
SENSE
setpoint
R
Setpoint
mA
Current
320
2
]
[
11
=
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