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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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STSPIN820 Folha de dados(PDF) 17 Page - STMicroelectronics |
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STSPIN820 Folha de dados(HTML) 17 Page - STMicroelectronics |
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17 / 29 page  DocID031065 Rev 2 17/29 STSPIN820 Functional description 29 The choice of the sense resistors value must take into account two main issues: The sensing resistor dissipates energy and provides dangerous negative voltages on the SENSE pins during the current recirculation. For this reason the resistance of this component should be kept low (using multiple resistors in parallel will help obtaining the required power rating with standard resistors). The lower is the RSNS value, the higher is the peak current error due to noise on the VREF pin and to the input offset of the current sense comparator: too small values of RSNS must be avoided. Figure 5. PWM current control sequence in mixed decay (DECAY = '0') Note: When the voltage on the SNS pins exceeds the absolute ratings, fault condition is triggered and the EN\FAULT output is forced low. |
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