參數(shù)資料
型號： TLE7242-2G
廠商： INFINEON TECHNOLOGIES AG
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO28
封裝： GREEN, PLASTIC, DSO-28
文件頁數(shù)： 48/50頁
文件大?。?/td> 1210K
代理商： TLE7242-2G
Data Sheet
7
Rev. 1.0, 2008-07-09
TLE7242-2G
Overview
measurement amplifiers. If the autozero function is enabled in SPI message #7, then the measured offset will be
subtracted from the A/D converter output as shown in Figure 3 when the current set point is greater than 0.
Dither
A triangular dither waveform can be superimposed on the current set point by setting the Dither Enable bit in SPI
message #3. The amplitude and frequency of the dither waveform are programmed for each channel via SPI
messages #3 and #4. See the SPI message section for details.
The first programmed value is the step size of the dither waveform which is the number of bits added or subtracted
from the setpoint per PWM period. One LSb of the dither step size is 1/16 the magnitude of the nominal setpoint
current value. The second programmed value is the number of steps in one quarter of the dither waveform.
When dither is enabled, a new average current set point will not be activated until the current dither cycle has
completed. The dither cycle is completed on the positive zero crossing of the dither waveform. A new dither
amplitude setting, a new dither frequency setting, or a dither disable command will also not be activated until the
current dither cycle has completed see Figure 4.
Figure 4
New Dither Values Programmed and the Resultant Waveform Timing
Note: the actual dither waveform is attenuated and phase shifted according to the frequency response of the
control loop.
If a channel enters transient mode operation while the dither waveform is active, the dither wave-form will pause
until transient mode is exited.
Transient Mode
When a large change in the current set point occurs, the device can be programmed to enter transient mode of
operation. The setpoint change threshold required to initiate transient mode can be programmed in
SPI message #6. The purpose of this mode of operation is to reduce the transition time of the load current after a
large change in setpoint. In this mode of operation the OUTx pin signal is controlled by the state machine shown
in Figure 5. The control method in this mode is similar to hysteretic control, the OUTx signal transitions high or
low based on the immediate value of the measured output current. The PWM frequency is not fixed in this mode
of operation. The device will automatically switch from transient mode of operation to steady state operation at the
start of the first PWM period after the new set point has been reached.
PWM_START
Dither
Parameter
Change
相關PDF資料
PDF描述
TLE8242 SPECIALTY ANALOG CIRCUIT, PQFP64
TLE8386EL 0.09 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO14
TLI4946-2L MAGNETIC SENSOR, PSIP3
TLI4946K MAGNETIC SENSOR, PDSO3
TLV431AIDBVR 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.24 V, PDSO5
相關代理商/技術參數(shù)
參數(shù)描述
TLE72422GXUMA1 制造商:Infineon Technologies AG 功能描述:Constant Current Control 28-Pin DSO 制造商:Infineon Technologies AG 功能描述:TRANSMISSION_IC - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC CURRENT SOURCE DSO28
TLE7243SL 功能描述:電源開關 IC - 配電 MC RELAY + LED RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5
TLE7243SLFUMA1 制造商:Infineon Technologies AG 功能描述:MC RELAY + LED 制造商:Infineon Technologies AG 功能描述:MC RELAY + LED - Tape and Reel
TLE7243SLXUMA2 制造商:Infineon Technologies AG 功能描述:Power Switch Lo Side 0.26A 制造商:Infineon Technologies AG 功能描述:Power Switch Lo Side 0.26A 24-Pin SSOP 制造商:Infineon Technologies AG 功能描述:IC DRIVER SPI 8CH LS 24SSOP
TLE7244SL 功能描述:電源開關 IC - 配電 MC RELAY + LED RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*