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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TLE8110ED датащи(PDF) 19 Page - Infineon Technologies AG |
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TLE8110ED датащи(HTML) 19 Page - Infineon Technologies AG |
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19 / 74 page  Data Sheet 19 Rev. 1.0 2018-03-07 TLE8110ED Smart Multichannel Low Side Switch with Parallel Control and SPI Interface Power Outputs 7.2 Description of the Clamping Structure When switching off inductive loads, the potential at pin OUT rises to VDS(CL) potential, because the inductance intends to continue driving the current. The clamping voltage is necessary to prevent destruction of the device, see Figure 8 for the clamping circuit principle. Nevertheless, the maximum allowed load inductance is limited. Figure 8 Internal Clamping Principle Clamping Energy During demagnetization of inductive loads, energy has to be dissipated in the device. This energy can be calculated with following equation: (7.1) The maximum energy, which is converted into heat, is limited by the thermal design of the component. Attention: It is strongly recommended to measure the load Energy and Current under operating conditions, example of measurement setup is shown in Figure 9. Load small-signal parameters might not reflect the real load behavior under operating conditions, see Figure 10. For more details please refer to the Application Note “Switching Inductive Loads”. Vbat ID V DScl OUT V DS GND L, RL OutputClamp.vsd EVDS CL () LL RL ------ IL VDS CL () VBAT – RL ---------------------------------------- 1 RL I ⋅ L VDS CL () VBAT – ---------------------------------------- + ⎝⎠ ⎛⎞ ln ⋅ – ⋅⋅ = |
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