数据搜索系统,热门电子元器件搜索 |
|
TLE5250 数据表(PDF) 5 Page - Siemens Semiconductor Group |
|
TLE5250 数据表(HTML) 5 Page - Siemens Semiconductor Group |
5 / 22 page TLE 5250 Semiconductor Group 5 1998-02-01 Application Two TLE 5250 drivers are required to operate a bipolar stepping motor. To implement full-step operation, a squarewave voltage with the required stepping frequency is applied to the phase input of the upper driver, and the same squarewave voltage, but offset in phase by 90 °el, to the phase input of the lower driver. Motor-current limiting is produced by a DC signal that is applied to both nominal-current inputs. In microstep operation the nominal current tracks sinusoidally and synchronously with the required stepping frequency. This produces a sinusoidal current in the motor windings to ensure very smooth running and a high stepping frequency. If an instantaneous nominal value (sine or cosine) is held on the second driver, it is possible to set a certain angle of rotation while the motor is stationary. The motor current produced by this depends on nominal voltage and sense resistance (normally 0.5 Ω), i.e. The actual voltage should be thoroughly filtered for precise current regulation, especially in microstep operation. So the actual input is accessible, and an RC element is necessary between the Sense output and Actual input. The resistance R R should correspond to the internal resistance of the nominal-current input-voltage source to prevent additional voltage offset on the nominal/actual comparator. Circuit Description Outputs Outputs Q1 and Q2 are fed by push-pull output stages. Four integrated free-wheeling diodes referred to ground or the supply voltage protect the integrated circuit against reverse voltages from an inductive load. Enable and Phase Outputs Q1 and Q2 can be disabled by a voltage V Inh of ≤ 0.8 V on the Enable pin. The sink transistors are enabled by V Inh ≥ 2V. The voltage on the Phase input determines the phase of the output current. Output Q1 acts as a sink for V Ph ≤ 0.8 V and as a source for VPh ≥ 2V. For output Q2 this is reversed: sink for V Ph ≥ 2 V and source for VPh ≤ 0.8 V. The sink transistors are chopped. Low signal on the Enable pin plus a clock signal on the Phase pin enable readout of the multiplexer. IM V [] Vnom V [] RS Ω [] ----------------------- = |
类似零件编号 - TLE5250 |
|
类似说明 - TLE5250 |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |