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TLE9185QXV33 Datasheet(PDF) 48 Page - Infineon Technologies AG |
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TLE9185QXV33 Datasheet(HTML) 48 Page - Infineon Technologies AG |
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48 / 192 page  Datasheet 48 Rev. 1.0 2021-01-21 TLE9185QXV33 BLDC Driver Gate Drivers 9.2.2 Static activation of a low-side MOSFET The description of the static activation of a low-side x differs from the description of Chapter 9.2.1 only by exchanging high-side x and low-side x. 9.2.3 Turn-off of the high-side and low-side MOSFETs of a half-bridge When the TLE9185QXV33 receives a SPI command to turn-off both the high-side and low-side MOSFETs of the half-bridge x (HBxMODE[1:0] = (0,0) or (1,1)): • The gate of HSx and LSx are discharged with the current -ICHGSTx for the duration tHBxCCPACTIVE (Figure 25). • At the end of tHBxCCPACTIVE, the drive current of HSx and LSx are reduced to -IHOLD. Figure 25 Turn-off of the high-side and low-side MOSFETs of a half-bridge Note: The CSN rising edge must be synchronized with the device logic. Therefore SPI commands are executed with a delay of up to 3 µs after the CSN rising edge. VS SHx HSx LSx GHx GLx IGHx IGLx SL CSN t t IGLx t IGHx -ICHGSTx t HSx internal drive signal -IHOLD IHOLD t -IHOLD 0 -ICHGSTx LSx internal drive signal -ICHGSTx SPI Frame accepted Turn off HSx and LSx tHBxCCP Active |
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