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TDE1798DP Folha de dados(PDF) 6 Page - STMicroelectronics |
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TDE1798DP Folha de dados(HTML) 6 Page - STMicroelectronics |
6 / 14 page W = V(BR) L R [Io − V(BR) − VCC R Log ( 1 + VCC V(BR) − VCC ) ] SHORT CIRCUIT CONDITIONS WITH CONTROLLED RESET DEMAGNETIZATION OF INDUCTIVE LOADS WITHOUT EXTERNAL CLAMPING DEVICES. With no external clamping device, the energy of demagnetization is dissipated in the TDE1798 output stage, and the clamping voltage is the col- lector -emitter breakdown voltage V(BR)CEO. This method provides a very fast demagnetization of inductive loads and can be used up to 150 mJ. The amount of energy W dissipated in the output stage during a demagnetizationis : Remark 1 : This energy is dissipated inside the case, then must be included in the whole power dissipation. Remark 2 : The use of external clamping device is recommended in case of parallel driving of loads. The dispersion of the collector-emitter breakdown voltage V(BR) would induce the circuit with the lowest V(BR) to dissipate the whole de- magnetization energy (which is roughly propor- tionnal to IO 2). TDE1798 6/14 |
Nº de peça semelhante - TDE1798DP |
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Descrição semelhante - TDE1798DP |
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