參數(shù)資料
型號(hào)： TLE8242-2
廠商： INFINEON TECHNOLOGIES AG
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP64
封裝： GREEN, PLASTIC, LQFP-144
文件頁(yè)數(shù)： 22/78頁(yè)
文件大小： 1589K
代理商： TLE8242-2
Data Sheet
29
Rev. 1.0, 2010-02-09
TLE8242-2
Functional Description and Electrical Characteristics
5.6
Current Feedback Registers
The average current over each PWM cycle is measured resulting in a 13 bit value. The summation of the 13 bit
values for all PWM periods in a dither period can be read by accessing SPI message #13. Also, the 11 MSb’s of
the minimum and maximum 13 bit values within a dither period can be read by accessing SPI message #12.
Average Current Over Dither Period
When the SPI message #13 is read or written, the 13 bit average current value for each PWM cycle within the
dither period is summed beginning with the positive going zero crossing of the dither waveform. The resulting 20
bit value represents the average current over the dither cycle as shown in equation:
If dither is disabled (Dither Steps = 0 or Dither Amplitude = 0), then the Average Current Feedback value will be
updated every PWM period and will be the same as the 13 bit current feedback value used in the PI controller.
The SPI message #13 includes a VALID bit that indicates whether the average current measurement has
completed since the last register access. When the register is accessed, the VALID bit is cleared. The VALID bit
is set again when the summation is completed and new data has been stored in the register.
The summation process runs continuously on the last selected channel. So if the same channel is repeatedly
selected, new data is always available within one dither period after the SPI register is accessed.
If the selected channel is different than the previously selected channel, the summation process does not begin
until the beginning of the next dither period. So, new data may not be available until two dither cycles have
completed.
The channel selection for the Average Dither Current Feedback Message message will also select the channel for
the Minimum and Maximum Current Over Dither Period function.
Minimum and Maximum Current Over Dither Period
When the SPI message #12 is read or written, the 13 bit average current value for each PWM cycle within the
dither period is monitored beginning with the positive going zero crossing of the dither waveform. The most
significant 11 bits of the minimum and the maximum average current values are stored.
If dither is disabled (Dither Steps = 0 or Dither Amplitude = 0), then the Minimum and Maximum values will be
updated every PWM period and will be the 11 Msb’s of the 13 bit current feedback value used in the PI controller.
The SPI message #12 includes a VALID bit that indicates whether a dither period has completed since the last
register access. When the register is accessed, the VALID bit is cleared. The VALID bit is set again when the dither
period is completed and new data has been stored in the minimum and maximum registers.
The minimum and maximum detection process runs continuously on the last selected channel. So, if the same
channel is repeatedly selected, new data is always available within one dither period after the SPI register is
accessed.
If the selected channel is different than the previously selected channel, the detection process does not begin until
the beginning of the next dither period. So, new data may not be available until two dither cycles have completed.
The channel selection for the Minimum and Maximum Current Over Dither Period message will also select the
channel for the Average Dither Current Feedback function.
[]
[Ohm]
Rsense
[mV]
320
Steps
Dither
2
Current
Dither
Avg
mA
Feedback
Current
Dither
15
=
相關(guān)PDF資料
PDF描述
TLE8366EV33 SWITCHING REGULATOR, PDSO8
TLE8366EV50 SWITCHING REGULATOR, PDSO8
TLS2205DL VOICE COIL MOTOR CONTROLLER, 1.4 A, PDSO48
TLV0831CD 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLV0831ID 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLE82452SAALLA1 制造商:Infineon Technologies AG 功能描述:TRANSMISSION_IC - Rail/Tube
TLE82452SAAUMA1 制造商:Infineon Technologies AG 功能描述:TRANSMISSION_IC - Tape and Reel
TLE8250G 功能描述:CAN 接口集成電路 High Speed CAN Transceiver RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube
TLE8250GVIO 功能描述:CAN 接口集成電路 High Speed CAN Transceiver RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube
TLE8250GVIOXUMA1 制造商:Infineon Technologies AG 功能描述:CAN 1MBd Standby 5V 8-Pin DSO 制造商:Infineon Technologies AG 功能描述:TRANSCEIVER - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC TXRX CAN HS DSO-8
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*